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All Alpha Proteins(all &alpha)

superfamily
code
  Num. of 
members
  Average 
size
  Superfamily 
name
46458 37 144 Globin-like 46548 3 134 alpha-helical ferredoxin 46557 2 76 GreA transcript cleavage protein, N-terminal domain 46561 3 58 Ribosomal protein L29 (L29p) 46565 6 85 Chaperone J-domain 46575 1 75 DNA polymerase III theta subunit-like 46579 2 118 Prefoldin 46585 2 84 HR1 repeat 46589 4 78 tRNA-binding arm 46596 1 72 Eukaryotic DNA topoisomerase I, dispensable insert domain 46600 1 44 C-terminal UvrC-binding domain of UvrB 46604 2 47 Epsilon subunit of F1F0-ATP synthase C-terminal domain 46609 4 89 Fe,Mn superoxide dismutase (SOD), N-terminal domain 46689 48 65 46689 48 65 Homeodomain-like 46767 2 82 Methylated DNA-protein cysteine methyltransferase, C-terminal domain 46774 4 115 ARID-like 46785 47 89 46785 47 89 "Winged helix" DNA-binding domain 46894 12 89 C-terminal effector domain of the bipartite response regulators 46906 2 70 Ribosomal protein L11, C-terminal domain 46911 1 73 Ribosomal protein S18 46915 2 94 Polynucleotide phosphorylase/guanosine pentaphosphate synthase (PNPase/GPSI), domain 3 46919 1 46 N-terminal Zn binding domain of HIV integrase 46924 1 65 RNA polymerase subunit RPB10 46929 3 49 DNA helicase RuvA subunit, C-terminal domain 46934 28 57 UBA-like 46938 3 78 CRAL/TRIO N-terminal domain 46942 1 114 Elongation factor TFIIS domain 2 46946 5 92 S13-like H2TH domain 46950 2 88 Double-stranded DNA-binding domain 46955 9 85 Putative DNA-binding domain 46966 10 117 Spectrin repeat 46973 1 104 Enzyme IIa from lactose specific PTS, IIa-lac 46977 5 144 Succinate dehydrogenase/fumarate reductase flavoprotein C-terminal domain 46984 1 157 Smac/diablo 46988 2 100 Tubulin chaperone cofactor A 46992 1 99 Ribosomal protein S20 46997 4 57 Bacterial immunoglobulin/albumin-binding domains 47005 2 44 Peripheral subunit-binding domain of 2-oxo acid dehydrogenase complex 47014 3 39 Protozoan pheromone proteins 47027 2 88 Acyl-CoA binding protein 47031 4 114 Second domain of FERM 47040 1 81 Kix domain of CBP (creb binding protein) 47045 2 93 RAP domain-like 47050 2 78 VHP, Villin headpiece domain 47055 1 67 TAF(II)230 TBP-binding fragment 47060 4 74 S15/NS1 RNA-binding domain 47072 2 68 Cysteine alpha-hairpin motif 47077 1 137 T4 endonuclease V 47082 2 134 Fertilization protein 47090 4 71 PGBD-like 47095 9 84 HMG-box 47113 21 93 Histone-fold 47144 1 95 HSC20 (HSCB), C-terminal oligomerisation domain 47148 1 137 Diol dehydratase, gamma subunit 47152 1 162 Methane monooxygenase hydrolase, gamma subunit 47157 1 95 Mitochondrial import receptor subunit Tom20 47162 1 144 Apolipoprotein 47170 1 157 Aspartate receptor, ligand-binding domain 47175 7 124 Cytochromes 47188 1 113 Hemerythrin 47195 2 159 TMV-like viral coat proteins 47203 9 169 Acyl-CoA dehydrogenase C-terminal domain-like 47212 1 94 FKBP12-rapamycin-binding domain of FKBP-rapamycin-associated protein (FRAP) 47216 1 200 Proteasome activator reg(alpha) 47220 10 134 alpha-catenin/vinculin-like 47226 7 126 Histidine-containing phosphotransfer domain, HPT domain 47233 3 127 Bacterial GAP domain 47240 11 344 Ferritin-like 47266 22 148 4-helical cytokines 47323 9 175 Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases 47336 7 86 ACP-like 47345 1 83 Colicin E immunity proteins 47353 3 77 Retrovirus capsid dimerization domain-like 47364 4 88 Domain of the SRP/SRP receptor G-proteins 47370 5 120 Bromodomain 47380 1 59 ROP protein 47384 3 73 Homodimeric domain of signal transducing histidine kinase 47391 2 44 Dimerization-anchoring domain of cAMP-dependent PK regulatory subunit 47396 3 46 Transcription factor IIA (TFIIA), alpha-helical domain 47401 1 37 Ectatomin subunits 47406 2 33 SinR repressor dimerisation domain-like 47413 24 77 lambda repressor-like DNA-binding domains 47446 2 91 Signal peptide-binding domain 47454 2 58 A DNA-binding domain in eukaryotic transcription factors 47459 7 75 HLH, helix-loop-helix DNA-binding domain 47565 5 120 Insect pheromone/odorant-binding proteins 47571 2 149 Cloroperoxidase 47576 10 161 Calponin-homology domain, CH-domain 47587 2 132 Domain of poly(ADP-ribose) polymerase 47592 3 93 SWIB/MDM2 domain 47598 12 62 Ribbon-helix-helix 47616 28 133 Glutathione S-transferase (GST), C-terminal domain 47644 1 90 Methionine synthase domain 47648 4 68 Nucleoside phosphorylase/phosphoribosyltransferase N-terminal domain 47655 2 148 STAT 47661 5 121 t-snare proteins 47668 1 130 N-terminal domain of cbl (N-cbl) 47672 2 152 Transferrin receptor-like dimerisation domain 47676 2 90 Conserved domain common to transcription factors TFIIS, elongin A, CRSP70 47681 1 91 C-terminal domain of B transposition protein 47686 1 66 Anaphylotoxins (complement system) 47694 1 79 Cytochrome c oxidase subunit h 47699 8 100 Bifunctional inhibitor/lipid-transfer protein/seed storage 2S albumin 47719 1 31 p53 tetramerization domain 47724 1 90 Domain of early E2A DNA-binding protein, ADDBP 47729 5 82 IHF-like DNA-binding proteins 47741 3 89 CO dehydrogenase ISP C-domain like 47752 1 79 Protein HNS-dependent expression A; HdeA 47757 1 81 Chemotaxis receptor methyltransferase CheR, N-terminal domain 47762 1 89 PAH2 domain 47769 17 76 SAM/Pointed domain 47781 11 75 RuvA domain 2-like 47789 3 69 C-terminal domain of RNA polymerase alpha subunit 47794 4 63 Rad51 N-terminal domain-like 47798 1 87 Barrier-to-autointegration factor, BAF 47802 3 84 DNA polymerase beta, N-terminal domain-like 47807 3 119 5' to 3' exonuclease, C-terminal subdomain 47819 10 101 HRDC-like 47823 2 100 lambda integrase-like, N-terminal domain 47831 1 123 Enzyme I of the PEP:sugar phosphotransferase system HPr-binding (sub)domain 47836 6 108 Retroviral matrix proteins 47852 1 142 Hepatitis B viral capsid (hbcag) 47857 2 160 Apolipophorin-III 47862 5 77 Saposin 47869 1 70 Bacteriocin AS-48 47874 3 237 Annexin 47895 3 121 Transducin (alpha subunit), insertion domain 47912 1 107 Wiscott-Aldrich syndrome protein, WASP, C-terminal domain 47917 2 124 C-terminal domain of alpha and beta subunits of F1 ATP synthase 47923 2 157 Ypt/Rab-GAP domain of gyp1p 47928 1 105 N-terminal domain of the delta subunit of the F1F0-ATP synthase 47933 2 106 ERP29 C domain-like 47938 1 149 Functional domain of the splicing factor Prp18 47943 5 137 Retrovirus capsid protein, N-terminal core domain 47954 9 107 Cyclin-like 47973 2 153 Ribosomal protein S7 47979 2 74 Iron-dependent repressor protein, dimerization domain 47986 13 95 DEATH domain 48008 1 152 Fatty acid responsive transcription factor FadR, C-terminal domain 48013 5 137 NusB-like 48019 10 108 DNA polymerase III clamp loader subunits, C-terminal domain 48024 1 102 N-terminal domain of DnaB helicase 48029 1 101 FliG 48034 2 98 Guanido kinase N-terminal domain 48045 1 138 Scaffolding protein gpD of bacteriophage procapsid 48050 2 115 Hemocyanin, N-terminal domain 48056 2 260 Di-copper centre-containing domain 48065 7 207 DBL homology domain (DH-domain) 48076 1 132 LigA subunit of an aromatic-ring-opening dioxygenase LigAB 48081 2 266 Methyl-coenzyme M reductase alpha and beta chain C-terminal domain 48092 1 124 Transcription factor STAT-4 N-domain 48097 6 156 Regulator of G-protein signaling, RGS 48108 1 153 Carbamoyl phosphate synthetase, large subunit connection domain 48113 6 316 Heme-dependent peroxidases 48140 1 143 Ribosomal protein L19 (L19e) 48145 1 158 Influenza virus matrix protein M1 48150 10 207 DNA-glycosylase 48163 2 181 An anticodon-binding domain of class I aminoacyl-tRNA synthetases 48168 2 187 R1 subunit of ribonucleotide reductase, N-terminal domain 48173 4 271 Cryptochrome/photolyase FAD-binding domain 48179 10 173 6-phosphogluconate dehydrogenase C-terminal domain-like 48201 3 71 Uteroglobin-like 48208 12 386 Six-hairpin glycosidases 48225 4 476 Seven-hairpin glycosidases 48230 6 358 Chondroitin AC/alginate lyase 48239 7 352 Terpenoid cyclases/Protein prenyltransferases 48256 3 412 Citrate synthase 48264 16 410 Cytochrome P450 48295 2 99 TrpR-like 48300 2 47 Ribosomal protein L7/12, oligomerisation (N-terminal) domain 48305 1 75 Class II MHC-associated invariant chain ectoplasmic trimerization domain 48310 2 398 Aldehyde ferredoxin oxidoreductase, C-terminal domains 48317 3 457 Acid phosphatase/Vanadium-dependent haloperoxidase 48334 2 286 DNA repair protein MutS, domain III 48340 1 300 Interferon-induced guanylate-binding protein 1 (GBP1), C-terminal domain 48345 3 230 A virus capsid protein alpha-helical domain 48350 4 190 GTPase activation domain, GAP 48366 1 469 Ras GEF 48425 3 198 Sec7 domain 48431 1 336 Lipovitellin-phosvitin complex, superhelical domain 48435 1 450 Bacterial muramidases 48439 2 324 Protein prenylyltransferase 48445 1 228 14-3-3 protein 48452 15 155 TPR-like 48464 6 144 ENTH/VHS domain 48479 1 105 Cytochrome c oxidase subunit E 48484 2 613 Lipoxigenase 48493 1 217 gene 59 helicase assembly protein 48498 22 115 Tetracyclin repressor-like, C-terminal domain 48508 17 242 Nuclear receptor ligand-binding domain 48537 3 253 Phospholipase C/P1 nuclease 48552 5 190 Serum albumin-like 48557 8 497 L-aspartase-like 48576 8 311 Terpenoid synthases 48592 2 255 GroEL equatorial domain-like 48600 7 120 Chorismate mutase II 48608 1 156 Peridinin-chlorophyll protein 48613 13 210 Heme oxygenase-like 48619 3 123 Phospholipase A2, PLA2 48647 1 98 Fungal elicitin 48652 1 90 Tetraspanin 48657 1 152 Repressor of bacterial conjugation FinO 48662 1 46 Ribosomal protein L39e 48666 1 73 Methanol dehydrogenase subunit 48670 2 61 Transducin (heterotrimeric G protein), gamma chain 48674 1 88 Fe-only hydrogenase smaller subunit 48678 1 87 Moesin tail domain 48686 1 29 Proteinase A inhibitor IA3 48690 1 47 Epsilon subunit of mitochondrial F1F0-ATP synthase 48695 6 108 Multiheme cytochromes 63446 2 58 Type I dockerin domain 63451 3 53 LEM domain 63491 3 99 BAG domain 63501 1 122 Frizzled cysteine-rich domain 63515 1 162 Outer surface protein C (OspC) 63520 2 110 PTS-regulatory domain, PRD 63562 2 90 RPB6/omega subunit-like 63570 4 96 PABC (PABP) domain 63592 1 98 Flagellar transcriptional activator FlhD 63600 2 192 Telomeric repeat binding factor (TRF) dimerisation domain 68906 6 46 SAP domain 68912 1 44 Rho termination factor, N-terminal domain 68918 1 54 Recombination endonuclease VII, C-terminal and dimerization domains 68989 1 72 Hemolysin expression modulating protein HHA 68993 1 142 FAT domain of focal adhesion kinase 69000 2 108 FAD-dependent thiol oxidase 69008 1 99 RecG, N-terminal domain 69012 2 153 alpha-ketoacid dehydrogenase kinase, N-terminal domain 69025 1 84 Hypothetical protein MTH865 69036 1 64 Bcr-Abl oncoprotein oligomerization domain 69047 1 69 Hypothetical protein YjbJ 69055 2 95 1-deoxy-D-xylulose-5-phosphate reductoisomerase, C-terminal domain 69060 1 174 Arp2/3 complex 21 kDa subunit ARPC3 69070 1 89 Anti-sigma factor AsiA 69075 1 97 Glutamyl tRNA-reductase dimerization domain 69099 1 156 Ran-GTPase activating protein 1 (RanGAP1), C-terminal domain 69103 1 139 Arp2/3 complex 16 kDa subunit ARPC5 69125 2 47 Nuclear receptor coactivator interlocking domain 69131 1 78 Quinohemoprotein amine dehydrogenase C chain 74731 1 60 Ribosomal protein L20 74748 1 269 Variable surface antigen VlsE 74778 1 160 Aconitase B, N-terminal domain 74784 1 217 Translin 81273 2 46 H-NS histone-like proteins 81382 1 55 Skp1 dimerisation domain-like 81383 3 83 F-box domain 81585 3 58 DNA polymerase beta-like, second domain 81593 5 128 Nucleotidyltransferase substrate binding subunit/domain 81601 1 68 Protein serine/threonine phosphatase 2C, C-terminal domain 81631 4 146 PAP/OAS1 substrate-binding domain 81698 2 66 FF domain 81710 1 88 Plasmid maintenance system epsilon/zeta, antidote epsilon subunit 81730 1 65 beta-catenin-interacting protein ICAT 81736 2 103 Group V grass pollen allergen 81761 1 145 X-Prolyl dipeptidyl aminopeptidase PepX, N-terminal domain 81767 1 122 Pre-protein crosslinking domain of SecA 81778 1 78 Crustacean CHH/MIH/GIH neurohormone 81783 1 83 C-terminal domain of DFF45/ICAD (DFF-C domain) 81790 1 99 Myosin phosphatase inhibitor 17kDa protein, CPI-17 81799 1 99 Putative methyltransferase TM0872, insert domain 81811 2 102 Helical domain of Sec23/24 81822 1 176 RuBisCo LSMT C-terminal, substrate-binding domain 81832 1 165 SopE-like GEF domain 81837 1 304 BEACH domain 81853 2 354 Family 10 polysaccharide lyase 81872 1 196 BRCA2 helical domain 81878 1 30 BRCA2 tower domain 81886 2 208 Helical scaffold and wing domains of SecA 81891 3 226 Poly A polymerase C-terminal region-like 81901 2 199 HCP-like 81923 3 139 Double Clp-N motif 81930 1 174 Orange carotenoid protein, N-terminal domain 81935 1 100 N-terminal domain of bifunctional PutA protein 88659 7 71 Sigma3 and sigma4 domains of RNA polymerase sigma factors 88688 5 99 Families 57/38 glycoside transferase middle domain 89000 3 85 post-HMGL domain-like 89009 3 95 GAT-like domain 89028 3 152 Cobalamin adenosyltransferase-like 89043 1 60 Soluble domain of poliovirus core protein 3a 89064 1 65 Replisome organizer (g39p helicase loader/inhibitor protein) 89069 1 66 N-terminal, cytoplasmic domain of anti-sigmaE factor RseA 89082 1 94 Antibiotic binding domain of TipA-like multidrug resistance regulators 89095 3 71 GatB/YqeY motif 89124 1 236 Nop domain 89155 2 197 TorD-like 89162 1 186 Gametocyte protein Pfg27 100909 1 150 IP3 receptor type 1 binding core, domain 2 100910 1 101 Chemosensory protein Csp2 100934 2 104 Heat shock protein 70kD (HSP70), C-terminal subdomain 100957 1 30 Dimerization cofactor of HNF-1 alpha 100985 1 46 Sporulation inhibitor Sda 101059 1 101 B-form DNA mimic Ocr 101082 1 187 Typo IV secretion system protein TraC 101089 2 52 Phosphoprotein XD domain 101094 2 140 Staphylocoagulase 101112 1 112 Oxygen-evolving enhancer protein 3, 101116 2 111 Flagellar export chaperone FliS 101125 1 87 Colicin D immunity protein 101148 2 148 Plant invertase/pectin methylesterase inhibitor 101152 1 185 Mob1/phocein 101156 1 54 Nonstructural protein ns2, Nep, M1-binding domain 101160 1 48 Dimerisation domain of CENP-B 101166 1 60 Docking domain A of the erythromycin polyketide synthase (DEBS) 101173 1 60 Docking domain B of the erythromycin polyketide synthase (DEBS) 101215 2 95 KaiA/RbsU domain 101224 1 87 HAND domain of the nucleosome remodeling ATPase ISWI 101233 1 111 PWI domain 101238 2 58 XPC-binding domain 101257 2 76 Flavivirus capsid protein C 101262 1 189 Methenyltetrahydrofolate cyclohydrolase-like 101278 1 176 N-terminal domain of adenylylcyclase associated protein, CAP 101283 1 54 GRIP domain 101288 6 55 L27 domain 101307 1 158 YutG-like 101312 1 145 Invasion protein A (SipA) , C-terminal actin binding domain 101322 1 213 YcfC-like 101327 1 168 YgfB-like 101332 1 119 Hypothetical protein MTH393 101344 1 213 Superantigen MAM 101353 1 212 Putative anticodon-binding domain of alanyl-tRNA synthetase (AlaRS) 101386 8 125 all-alpha NTP pyrophosphatases 101391 1 194 Hsp90 co-chaperone CDC37 101399 1 335 P40 nucleoprotein 101420 1 152 C-terminal domain of Ku80 101424 1 159 Hypothetical protein ST1625 101447 2 360 Formin homology 2 domain (FH2 domain) 101473 1 207 Citrobacter dihydroxyacetone kinase extra ATP-binding domain 101478 1 301 ADP-ribosylglycohydrolase 101489 1 100 Eukaryotic initiation factor 4f subunit eIF4g, eIF4e-binding domain 101494 1 124 Stathmin 101498 1 77 Anti-sigma factor FlgM 103657 3 208 BAR/IMD domain-like 109604 5 0 HD-domain/PDEase-like 109631 1 89 Transcriptional repressor TraM 109635 1 104 DnaK suppressor protein DksA, alpha-hairpin domain 109640 1 64 KRAB domain (Kruppel-associated box) 109709 2 104 KorB DNA-binding domain-like 109715 1 70 DEK C-terminal domain 109728 1 74 Hypothetical protein AF0491, middle domain 109732 1 83 HBS1-like domain 109736 1 68 FGAM synthase PurL, linker domain 109747 1 66 Glycogen synthesis protein GlgS 109751 1 90 Alpha-hemoglobin stabilizing protein AHSP 109755 4 185 PhoU-like 109770 1 117 Nickel-containing superoxide dismutase, NiSOD 109775 1 194 Mannose-6-phosphate receptor binding protein 1 (Tip47), C-terminal domain 109779 1 128 Domain from hypothetical 2610208m17rik protein 109797 2 94 Bacteriocin immunity protein-like 109801 1 62 Hypothetical protein D-63 109805 1 63 Phenylalanine zipper 109839 1 176 Cag-Z 109843 1 192 CAPPD, an extracellular domain of amyloid beta A4 protein 109854 2 154 DinB/YfiT-like putative metalloenzymes 109859 1 50 NblA-like 109880 1 167 A middle domain of Talin 1 109885 3 151 I/LWEQ domain 109905 1 88 Surp module (SWAP domain) 109910 1 82 YgfY-like 109915 1 112 Hypothetical protein YhaI 109920 1 121 Hypothetical protein At3g22680 109925 1 74 Lissencephaly-1 protein (Lis-1, PAF-AH alpha) N-terminal domain 109993 1 249 VPS9 domain 109998 2 151 Triger factor/SurA peptide-binding domain-like 110004 1 198 Glycolipid transfer protein, GLTP 110009 1 137 Product of RIKEN cDNA 3110009e22 110014 1 147 Her-1 110019 1 367 ERO1-like 110035 1 99 GDNF receptor-like 116742 3 91 eIF2alpha middle domain-like 116768 1 127 DNA-binding domain of EIN3-like 116820 1 62 Rps17e-like 116842 1 67 XseB-like 116846 2 85 MIT domain 116854 1 105 Avirulence protein AvrPto 116858 1 53 Hypothetical membrane protein Ta0354, soluble domain 116878 1 173 TrmE connector domain 116907 1 164 Hook domain 116915 1 131 Hypothetical protein YqbG 116922 1 81 YugE-like 116927 2 76 EspA/CesA-like 116942 1 224 RNA-binding protein She2p 116960 1 168 YfbU-like 116965 1 286 Hypothetical protein MPN330 117018 1 260 ATP-dependent DNA ligase DNA-binding domain 117023 1 131 DNA primase DnaG, C-terminal domain 140102 1 80 ISY1 domain-like 140106 1 47 Calcyclin-binding protein-like 140111 3 78 Endosomal sorting complex assembly domain 140121 1 73 SPy1572-like 140125 2 56 Rabenosyn-5 Rab-binding domain-like 140129 1 59 MxiH-like 140319 1 64 IscX-like 140356 2 98 PPK N-terminal domain-like 140361 1 83 MIT domain-like 140367 1 73 Coronavirus NSP7-like 140371 1 85 Vng1086c-like 140376 1 75 ChaB-like 140383 2 68 BSD domain-like 140404 1 79 EF2458-like 140415 3 115 YppE-like 140423 1 181 MW0975(SA0943)-like 140427 1 94 VPS28 C-terminal domain-like 140453 2 96 EsxAB dimer-like 140459 2 125 PE/PPE dimer-like 140478 1 126 LemA-like 140482 1 101 MAST3 pre-PK domain-like 140486 1 124 PA2201 N-terminal domain-like 140490 1 105 Nqo1C-terminal domain-like 140496 1 79 HP1531-like 140500 1 54 BAS1536-like 140506 1 70 FHV B2 protein-like 140560 1 76 TM0693-like 140566 1 126 FlgN-like 140570 1 160 MukF C-terminal domain-like 140576 1 81 HIV integrase-binding domain 140581 1 68 TraM-like 140586 1 91 Dcp2 domain-like 140591 2 92 Type III secretion system domain 140607 1 123 EF2947-like 140612 1 59 EB1 dimerisation domain-like 140652 1 74 YozE-like 140657 2 142 Hyaluronidase post-catalytic domain-like 140663 2 118 TTHA0068-like 140670 1 94 YoaC-like 140683 1 79 SP0561-like 140688 1 105 YfmB-like 140693 2 276 IpaD-like 140713 1 63 Phage replication organizer domain 140718 2 104 Mediator hinge subcomplex-like 140726 1 111 AF0941-like 140731 1 155 PA2201 C-terminal domain-like 140736 1 140 Rv1873-like 140741 1 157 RUN domain-like 140746 1 201 SipA N-terminal domain-like 140753 1 147 PG0816-like 140804 1 126 YidB-like 140809 2 411 Rhabdovirus nucleoprotein-like 140856 1 133 USP8 N-terminal domain-like 140860 1 334 Pseudo ankyrin repeat-like 140864 1 346 TROVE domain-like 140869 1 148 GUN4-like 140914 1 207 PriB N-terminal domain-like 140919 1 162 DNA terminal protein 140924 3 283 Duffy binding domain-like 140931 1 172 Fic-like 140959 3 330 Indolic compounds 2,3-dioxygenase-like 140979 1 287 Topoisomerase V catalytic domain-like 140984 3 298 PTPA-like 140990 1 163 FtsH protease domain-like 140996 1 83 Hermes dimerisation domain 141000 1 92 Glu-tRNAGln amidotransferase C subunit 141004 1 61 RelB-like

All Beta Proteins(all &beta)

superfamily
code
  Num. of 
members
  Average 
size
  Superfamily 
name
48726 46 107 Immunoglobulin 49265 47 103 Fibronectin type III 49299 3 98 PKD domain 49303 5 105 beta-Galactosidase/glucuronidase domain 49309 8 107 Transglutaminase, two C-terminal domains 49313 7 112 Cadherin-like 49319 2 110 Actinoxanthin-like 49329 4 154 Cu,Zn superoxide dismutase-like 49344 2 187 CBD9-like 49348 5 136 Clathrin adaptor appendage domain 49354 6 123 PapD-like 49363 1 112 Purple acid phosphatase, N-terminal domain 49367 2 106 Superoxide reductase-like 49373 6 95 Invasin/intimin cell-adhesion fragments 49380 1 155 Diphtheria toxin, C-terminal domain 49384 8 142 Carbohydrate-binding domain 49401 10 142 Bacterial adhesins 49410 1 130 Alpha-macroglobulin receptor domain 49417 8 197 p53-like transcription factors 49441 1 187 Cytochrome f, large domain 49447 1 253 Second domain of Mu2 adaptin subunit (ap50) of ap2 adaptor 49452 4 101 Starch-binding domain-like 49464 3 91 Carboxypeptidase regulatory domain-like 49468 1 150 VHL 49472 1 115 Transthyretin (synonym: prealbumin) 49478 3 88 Cna protein B-type domain 49482 4 251 Aromatic compound dioxygenase 49493 4 81 HSP40/DnaJ peptide-binding domain 49498 1 74 alpha-Amylase inhibitor tendamistat 49503 32 138 Cupredoxins 49562 17 134 C2 domain (Calcium/lipid-binding domain, CaLB) 49584 3 85 Periplasmic chaperone C-domain 49590 1 94 PHL pollen allergen 49594 1 109 Rab geranylgeranyltransferase alpha-subunit, insert domain 49599 4 161 TRAF domain-like 49606 1 79 Neurophysin II 49695 12 96 gamma-Crystallin-like 49723 4 117 Lipase/lipooxygenase domain (PLAT/LH2 domain) 49742 4 152 PHM/PNGase F 49749 5 219 Group II dsDNA viruses VP 49758 1 142 Calpain large subunit, middle domain (domain III) 49764 8 126 HSP20-like chaperones 49772 1 131 Ecotin, trypsin inhibitor 49777 3 164 PEBP-like 49785 21 167 Galactose-binding domain-like 49818 7 217 49830 1 228 ENV polyprotein, receptor-binding domain 49835 5 147 Virus attachment protein globular domain 49842 13 140 TNF-like 49854 5 113 Spermadhesin, CUB domain 49863 6 100 Hyaluronate lyase-like, C-terminal domain 49870 1 207 Osmotin, thaumatin-like protein 49879 15 125 SMAD/FHA domain 49889 1 224 Soluble secreted chemokine inhibitor, VCCI 49894 1 299 Baculovirus p35 protein 49899 17 227 Concanavalin A-like lectins/glucanases 49998 5 434 Amine oxidase catalytic domain 50012 2 116 EV matrix protein 50017 1 288 gp9 50022 12 143 ISP domain 50037 5 62 C-terminal domain of transcriptional repressors 50044 32 75 SH3-domain 50084 4 48 Myosin S1 fragment, N-terminal domain 50090 5 128 Electron transport accessory proteins 50104 11 81 Translation proteins SH3-like domain 50118 4 107 Cell growth inhibitor/plasmid maintenance toxic component 50122 2 50 DNA-binding domain of retroviral integrase 50129 19 163 GroES-like 50151 1 55 SacY-like RNA-binding domain 50156 50 101 PDZ domain-like 50176 2 96 N-terminal domains of the minor coat protein g3p 50182 14 75 Sm-like ribonucleoproteins 50193 2 127 Ribosomal protein L14 50199 1 137 Staphylococcal nuclease 50203 10 100 Bacterial enterotoxins 50242 5 143 TIMP-like 50324 2 230 Inorganic pyrophosphatase 50331 11 77 MOP-like 50341 2 136 CheW-like 50346 4 124 PRC-barrel domain 50353 9 141 Cytokine 50370 14 138 Ricin B-like lectins 50382 2 150 Agglutinin 50386 8 188 STI-like 50405 5 119 Actin-crosslinking proteins 50443 2 203 FucI/AraA C-terminal domain-like 50447 17 99 Translation proteins 50465 6 95 EF-Tu/eEF-1alpha/eIF2-gamma C-terminal domain 50475 22 158 FMN-binding split barrel 50486 5 115 FMT C-terminal domain-like 50494 37 231 Trypsin-like serine proteases 50610 1 80 mu transposase, C-terminal domain 50615 2 72 N-terminal domain of alpha and beta subunits of F1 ATP synthase 50621 7 158 Alanine racemase C-terminal domain-like 50630 13 308 Acid proteases 50677 4 177 ValRS/IleRS/LeuRS editing domain 50685 3 154 Barwin-like endoglucanases 50692 14 119 50692 14 119 ADC-like 50715 2 140 Ribosomal protein L25-like 50723 1 125 Core binding factor beta, CBF 50729 46 115 PH domain-like 50784 3 50 Transcription factor IIA (TFIIA), beta-barrel domain 50789 3 205 Herpes virus serine proteinase, assemblin 50800 5 139 PK beta-barrel domain-like 50809 1 113 XRCC4, N-terminal domain 50814 25 153 50814 25 153 Lipocalins 50876 2 120 Avidin/streptavidin 50882 4 106 beta-Barrel protease inhibitors 50886 2 92 D-aminopeptidase, middle and C-terminal domains 50891 5 149 Cyclophilin-like 50904 2 108 Oncogene products 50911 5 142 Mannose 6-phosphate receptor domain 50916 2 128 Rap30/74 interaction domains 50923 5 197 Hemopexin-like domain 50934 1 235 Tachylectin-2 50939 9 390 Sialidases 50952 1 448 Soluble quinoprotein glucose dehydrogenase 50956 1 353 Thermostable phytase (3-phytase) 50960 1 269 TolB, C-terminal domain 50965 1 386 Galactose oxidase, central domain 50969 5 339 YVTN repeat-like/Quinoprotein amine dehydrogenase 50974 1 459 Nitrous oxide reductase, N-terminal domain 50978 12 328 WD40 repeat-like 50985 2 337 RCC1/BLIP-II 50989 1 327 Clathrin heavy-chain terminal domain 50993 2 370 Peptidase/esterase 'gauge' domain 50998 3 583 Quinoprotein alcohol dehydrogenase-like 51004 1 432 C-terminal (heme d1) domain of cytochrome cd1-nitrite reductase 51011 22 85 Glycosyl hydrolase domain 51045 8 38 WW domain 51055 3 52 Carbohydrate binding domain 51064 1 59 Head domain of nucleotide exchange factor GrpE 51069 4 248 Carbonic anhydrase 51081 1 350 Bacteriochlorophyll A protein 51087 2 173 Outer surface protein 51092 1 163 Vitelline membrane outer protein-I (VMO-I) 51096 3 209 delta-Endotoxin (insectocide), middle domain 51101 3 147 Mannose-binding lectins 51110 2 116 alpha-D-mannose-specific plant lectins 51120 1 224 beta-Roll 51126 9 351 Pectin lyase-like 51156 1 82 Insect cysteine-rich antifreeze protein 51161 7 203 Trimeric LpxA-like enzymes 51177 1 87 An insect antifreeze protein 51182 16 0 RmlC-like cupins 51206 15 138 cAMP-binding domain-like 51215 1 161 Regulatory protein AraC 51219 2 196 TRAP-like 51225 2 68 Fibre shaft of virus attachment proteins 51230 7 83 Single hybrid motif 51246 6 94 Rudiment single hybrid motif 51261 2 196 Duplicated hybrid motif 51269 3 68 AFP III-like domain 51274 1 95 Head decoration protein D (gpD, major capsid protein D) 51278 1 122 Urease, beta-subunit 51283 9 144 dUTPase-like 51289 1 102 Tlp20, baculovirus telokin-like protein 51294 5 170 Hedgehog/intein (Hint) domain 51306 3 110 LexA/Signal peptidase 51316 5 149 Mss4-like 51322 1 101 Cyanovirin-N 51327 1 104 Head-binding domain of phage P22 tailspike protein 51332 2 172 E2 regulatory, transactivation domain 51338 14 119 Composite domain of metallo-dependent hydrolases 51344 2 64 Epsilon subunit of F1F0-ATP synthase N-terminal domain 54160 17 73 Chromo domain-like 56037 2 164 PheT/TilS domain 63380 14 106 Riboflavin synthase domain-like 63433 1 118 Fumarylacetoacetate hydrolase, FAH, N-terminal domain 63697 1 157 Olfactory marker protein 63707 1 163 Ganglioside M2 (gm2) activator 63712 1 208 Nicotinic receptor ligand binding domain-like 63724 2 158 Cytolysin/lectin 63737 1 208 Leukotriene A4 hydrolase N-terminal domain 63748 10 107 Tudor/PWWP/MBT 63817 3 194 Sortase 63825 2 129 YWTD domain 63829 4 313 Calcium-dependent phosphotriesterase 63840 1 96 Ribonuclease domain of colicin E3 63848 1 107 Cell-division inhibitor MinC, C-terminal domain 63862 2 90 Thiamin pyrophosphokinase, substrate-binding domain 63867 4 78 MoeA C-terminal domain-like 63877 1 188 Methuselah ectodomain 63882 3 176 MoeA N-terminal region -like 63887 2 90 P-domain of calnexin/calreticulin 69179 4 156 Integrin domains 69189 3 85 Penicillin-binding protein associated domain 69203 2 106 Nucleoplasmin-like core domain 69255 1 124 Tail-associated lysozyme gp5, N-terminal domain 69287 2 72 Urease metallochaperone UreE, N-terminal domain 69298 2 114 Quinohemoprotein amine dehydrogenase A chain, domain 3 69304 1 281 Tricorn protease N-terminal domain 69318 1 452 Integrin alpha N-terminal domain 69322 1 360 Tricorn protease domain 2 69336 1 268 Alpha subunit of glutamate synthase, C-terminal domain 69340 2 157 C-terminal domain of adenylylcyclase associated protein 69349 3 150 Phage fibre proteins 69360 2 190 Cell wall binding repeat 69369 2 261 Cloacin translocation domain 74853 1 113 Lamin A/C globular tail domain 74863 1 121 Thiol:disulfide interchange protein DsbD, N-terminal domain (DsbD-alpha) 74877 2 126 Major surface antigen p30, SAG1 74914 1 370 V-region of surface antigen I/II (SA I/II, PAC) 74924 8 108 Cap-Gly domain 74942 1 74 YhbC-like, C-terminal domain 74982 1 112 Small protein B (SmpB) 75001 1 118 Dipeptidyl peptidase I (cathepsin C), exclusion domain 75011 1 355 3-carboxy-cis,cis-mucoante lactonizing enzyme 81277 1 101 C-terminal domain of mollusc hemocyanin 81296 40 113 E set domains 81624 6 128 N-terminal domain of MutM-like DNA repair proteins 81653 1 115 Calcium ATPase, transduction domain A 81982 1 131 Antigen MPT63/MPB63 (immunoprotective extracellular protein) 81986 2 63 Tp47 lipoprotein, middle and C-terminal domains 81995 2 168 beta-sandwich domain of Sec23/24 82004 1 81 N-utilization substance G protein NusG, insert domain 82026 1 113 Calcium-mediated lectin 82046 1 371 Viral chemokine binding protein m3 82051 1 156 Obg GTP-binding protein N-terminal domain 82057 4 77 Prokaryotic SH3-related domain 82061 1 203 BAH domain 82093 1 101 Heme chaperone CcmE 82109 2 160 MIR domain 82114 2 132 Riboflavin kinase-like 82153 3 153 FAS1 domain 82171 2 468 DPP6 N-terminal domain-like 82185 1 78 Histone H3 K4-specific methyltransferase SET7/9 N-terminal domain 82199 4 204 SET domain 82215 1 158 C-terminal autoproteolytic domain of nucleoporin nup98 82220 1 191 Tp47 lipoprotein, N-terminal domain 88633 25 239 Positive stranded ssRNA viruses 88645 7 399 ssDNA viruses 88648 2 370 Group I dsDNA viruses 88650 3 157 Satellite viruses 88697 12 131 PUA domain-like 89232 1 110 Hypothetical protein TM1070 89260 1 98 Collagen-binding domain 89360 2 98 HesB-like domain 89372 1 312 Fucose-specific lectin 89392 3 179 Prokaryotic lipoproteins and lipoprotein localization factors 89428 1 533 Adsorption protein p2 89433 1 316 Baseplate structural protein gp8 89442 1 105 Hypothetical protein YojF 89447 3 79 AbrB/MazE/MraZ-like 100920 1 115 Heat shock protein 70kD (HSP70), peptide-binding domain 100939 3 251 SPOC domain-like 101542 1 114 Fungal immunomodulatory protein, FIP 101546 1 155 ASF1-like 101576 1 116 Supernatant protein factor (SPF), C-terminal domain 101596 1 199 Dextranase, N-terminal domain 101601 1 110 Unnamed hypothetical protein 101606 1 117 Superantigen (mitogen) Ypm 101690 2 122 PAZ domain 101697 1 118 Hypothetical protein YfhH 101738 1 106 Stringent starvation protein B, SspB 101744 3 90 Rof/RNase P subunit-like 101751 1 70 Hydrophobin II, HfbII 101756 1 93 Hypothetical protein YgiW 101790 5 85 Aminomethyltransferase beta-barrel domain 101801 2 78 Surface presentation of antigens (SPOA) 101816 1 111 Replicase NSP9 101821 6 84 Aminopeptidase/glucanase lid domain 101852 1 106 Bacterial fluorinating enzyme, C-terminal domain 101874 2 172 YceI-like 101887 1 317 Apyrase 101898 2 268 NHL repeat 101904 2 304 GyrA/ParC C-terminal domain-like 101908 1 333 Putative isomerase YbhE 101931 1 33 Pym (Within the bgcn gene intron protein, WIBG), N-terminal domain 101936 3 130 DNA-binding pseudobarrel domain 101941 1 147 NAC domain 101960 1 410 Stabilizer of iron transporter SufD 101967 1 179 Adhesin YadA, collagen-binding domain 101999 1 158 Trimeric adhesin 102031 1 128 AXH domain 110069 2 120 ApaG-like 110083 1 165 Peptidylarginine deiminase Pad4, middle domain 110087 1 149 DR1885-like metal-binding protein 110111 1 131 Ctag/Cox11 110132 1 153 BTV NS2-like ssRNA-binding domain 110217 1 161 DNA-binding protein LAG-1 (CSL) 110221 1 162 AbfB domain 110296 2 385 Oligoxyloglucan reducing end-specific cellobiohydrolase 110304 2 148 Coronavirus RNA-binding domain 110324 1 66 Ribosomal L27 protein 117066 1 68 Accessory protein X4 (ORF8, ORF7a) 117070 1 151 LEA14-like 117074 1 170 Hypothetical protein PA1324 117100 1 97 Beta-galactosidase LacA, domain 3 117125 1 108 Putative glucosidase YicI, C-terminal domain 117130 1 55 CsrA-like 117143 1 293 Flagellar hook protein flgE 117281 1 285 Kelch motif 117289 2 369 Nucleoporin domain 141066 2 110 ICP-like 141072 2 139 CalX-like 141086 1 99 Agglutinin HPA-like 141091 1 103 L21p-like 141099 1 98 Atu1913-like 141130 1 268 Acetamidase/Formamidase-like 141251 1 107 Kinase-associated protein B-like 141255 1 77 YccV-like 141259 1 80 CarD-like 141300 1 73 GatD N-terminal domain-like 141318 1 159 TM0957-like 141322 1 72 NfeD domain-like 141371 3 117 PilZ domain-like 141447 1 74 PA2021-like 141452 1 154 Hcp1-like 141457 1 146 BH3618-like 141480 3 125 Extracellular hemoglobin linker subunit, receptor domain 141488 1 82 YdhA-like 141493 1 173 Allene oxide cyclase-like 141523 2 120 L,D-transpeptidase catalytic domain-like 141530 1 119 PTSIIA/GutA-like 141562 1 169 At5g01610-like 141571 3 162 Pentapeptide repeat-like 141658 2 148 Bacteriophage trimeric proteins domain 141666 1 78 'SARS ORF9b-like 141673 1 128 MOSC N-terminal domain-like 141678 1 153 MAL13P1.257-like 141694 1 83 PG0164-like 141729 1 116 FimD N-terminal domain-like 141734 1 124 HisI-like 141739 3 174 MFPT repeat-like

Alpha Beta Proteins(a/b)

superfamily
code
  Num. of 
members
  Average 
size
  Superfamily 
name
51351 3 243 Triosephosphate isomerase (TIM) 51366 22 237 Ribulose-phoshate binding barrel 51391 2 214 Thiamin phosphate synthase 51395 17 336 FMN-linked oxidoreductases 51412 3 355 Inosine monophosphate dehydrogenase (IMPDH) 51419 8 240 PLP-binding barrel 51430 8 311 NAD(P)-linked oxidoreductase 51445 33 368 (Trans)glycosidases 51556 25 303 Metallo-dependent hydrolases 51569 37 284 Aldolase 51604 14 249 Enolase C-terminal domain-like 51621 8 315 Phosphoenolpyruvate/pyruvate domain 51645 1 688 Malate synthase G 51649 4 302 RuBisCo, C-terminal domain 51658 10 318 Xylose isomerase-like 51679 6 343 Bacterial luciferase-like 51690 7 245 Nicotinate/Quinolinate PRTase C-terminal domain-like 51695 7 266 PLC-like phosphodiesterases 51703 2 508 Cobalamin (vitamin B12)-dependent enzymes 51713 2 358 tRNA-guanine transglycosylase 51717 4 260 Dihydropteroate synthetase-like 51726 4 357 UROD/MetE-like 51730 2 284 FAD-linked oxidoreductase 51735 26 251 NAD(P)-binding Rossmann-fold domains 51905 27 175 FAD/NAD(P)-binding domain 51971 9 243 Nucleotide-binding domain 51984 3 91 MurCD N-terminal domain 51989 3 336 Glycosyl hydrolases family 6, cellulases 52009 2 128 Phosphohistidine domain 52016 5 198 LeuD/IlvD-like 52021 1 151 Carbamoyl phosphate synthetase, small subunit N-terminal domain 52025 2 211 PA domain 52029 3 167 GroEL apical domain-like 52038 2 88 Barstar-related 52042 1 142 Ribosomal protein L32e 52047 5 284 RNI-like 52058 19 215 L domain-like 52075 1 198 Outer arm dynein light chain 1 52087 3 194 CRAL/TRIO domain 52091 3 112 Anti-sigma factor antagonist SpoIIaa 52096 23 257 ClpP/crotonase 52113 8 106 BRCT domain 52121 3 157 Lumazine synthase 52129 7 262 Caspase-like 52141 4 206 Uracil-DNA glycosylase-like 52151 2 239 FabD/lysophospholipase-like 52156 1 131 Initiation factor IF2/eIF5b, domain 3 52161 1 129 Ribosomal protein L13 52166 2 209 Ribosomal protein L4 52172 29 132 CheY-like 52200 1 145 Toll/Interleukin receptor TIR domain 52206 1 111 Hypothetical protein MTH538 52210 4 147 Succinyl-CoA synthetase domains 52218 20 170 Flavoproteins 52242 5 157 Cobalamin (vitamin B12)-binding domain 52255 1 159 N5-CAIR mutase (phosphoribosylaminoimidazole carboxylase, PurE) 52266 8 233 SGNH hydrolase 52279 1 214 Beta-D-glucan exohydrolase, C-terminal domain 52283 10 148 Formate/glycerate dehydrogenase catalytic domain-like 52304 2 148 Type II 3-dehydroquinate dehydratase 52309 6 181 N-(deoxy)ribosyltransferase-like 52313 2 214 Ribosomal protein S2 52317 15 210 Class I glutamine amidotransferase-like 52335 5 154 Methylglyoxal synthase-like 52343 12 145 Ferredoxin reductase-like, C-terminal NADP-linked domain 52374 17 354 Nucleotidylyl transferase 52402 19 225 Adenine nucleotide alpha hydrolases-like 52413 2 122 UDP-glucose/GDP-mannose dehydrogenase C-terminal domain 52418 3 265 Nucleoside phosphorylase/phosphoribosyltransferase catalytic domain 52425 5 192 Cryptochrome/photolyase, N-terminal domain 52440 15 112 PreATP-grasp domain 52467 12 172 DHS-like NAD/FAD-binding domain 52490 2 218 Tubulin nucleotide-binding domain-like 52499 6 204 Isochorismatase-like hydrolases 52507 4 172 Homo-oligomeric flavin-containing Cys decarboxylases, HFCD 52518 28 225 Thiamin diphosphate-binding fold (THDP-binding) 52540 45 171 P-loop containing nucleoside triphosphate hydrolases 52728 1 163 PTS IIb component 52733 2 340 Nicotinate mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase (CobT) 52738 1 198 Methylesterase CheB, C-terminal domain 52743 7 372 Subtilisin-like 52768 7 324 Arginase/deacetylase 52777 4 238 CoA-dependent acyltransferases 52788 4 140 Phosphotyrosine protein phosphatases I 52794 2 100 PTS system, Lactose/Cellobiose specific IIB subunit 52799 19 234 (Phosphotyrosine protein) phosphatases II 52821 21 136 Rhodanese/Cell cycle control phosphatase 52833 48 105 Thioredoxin-like 52913 1 95 RNA 3'-terminal phosphate cyclase, RPTC, insert domain 52922 6 150 TK C-terminal domain-like 52935 5 141 PK C-terminal domain-like 52943 2 201 ATP synthase (F1-ATPase), gamma subunit 52949 7 171 Macro domain-like 52954 12 120 Class II aaRS ABD-related 52964 1 134 TolB, N-terminal domain 52968 3 133 B12-dependent dehydatase associated subunit 52972 7 189 ITPase-like 52980 7 126 Restriction endonuclease-like 53032 3 89 tRNA-intron endonuclease catalytic domain-like 53036 1 139 Eukaryotic RPB5 N-terminal domain 53041 1 115 Resolvase-like 53056 3 221 beta-carbonic anhydrase, cab 53062 1 129 IIA domain of mannose transporter, IIA-Man 53067 23 120 Actin-like ATPase domain 53092 3 149 Creatinase/prolidase N-terminal domain 53098 2 186 Ribonuclease H-like 53137 4 132 Translational machinery components 53146 3 115 Nitrogenase accessory factor-like 53150 2 148 DNA repair protein MutS, domain II 53155 2 81 Methylated DNA-protein cysteine methyltransferase domain 53163 2 241 HybD-like 53167 11 263 Purine and uridine phosphorylases 53178 2 190 Peptidyl-tRNA hydrolase-like 53182 1 206 Pyrrolidone carboxyl peptidase (pyroglutamate aminopeptidase) 53187 29 288 Zn-dependent exopeptidases 53213 1 298 LigB subunit of an aromatic-ring-opening dioxygenase LigAB 53218 8 156 Molybdenum cofactor biosynthesis proteins 53223 14 147 Aminoacid dehydrogenase-like, N-terminal domain 53244 7 137 MurD-like peptide ligases, peptide-binding domain 53254 9 317 Phosphoglycerate mutase-like 53271 26 184 PRTase-like 53300 13 205 vWA-like 53323 1 253 Pyruvate-ferredoxin oxidoreductase, PFOR, domain III 53328 6 195 Formyltransferase 53383 38 399 PLP-dependent transferases 53448 22 261 Nucleotide-diphospho-sugar transferases 53474 43 272 alpha/beta-Hydrolases 53590 3 313 Nucleoside hydrolase 53597 14 185 Dihydrofolate reductase-like 53613 19 297 Ribokinase-like 53623 7 231 MurD-like peptide ligases, catalytic domain 53633 9 270 Carbamate kinase-like 53639 4 232 AraD-like aldolase/epimerase 53649 8 439 Alkaline phosphatase-like 53659 9 350 Isocitrate/Isopropylmalate dehydrogenase-like 53671 8 180 Aspartate/ornithine carbamoyltransferase 53681 4 120 Aspartate/glutamate racemase 53686 14 362 Tryptophan synthase beta subunit-like PLP-dependent enzymes 53697 6 376 SIS domain 53720 9 472 ALDH-like 53732 3 549 Aconitase iron-sulfur domain 53738 6 130 Phosphoglucomutase, first 3 domains 53743 2 342 FucI/AraA N-terminal and middle domains 53748 2 402 Phosphoglycerate kinase 53756 6 470 UDP-Glycosyltransferase/glycogen phosphorylase 53774 2 338 Glutaminase/Asparaginase 53784 2 435 Phosphofructokinase 53790 7 236 Tetrapyrrole methylase 53795 4 248 PEP carboxykinase-like 53800 4 262 Chelatase 53807 8 275 "Helical backbone" metal receptor 53822 10 290 Periplasmic binding protein-like I 53850 30 286 Periplasmic binding protein-like II 53901 22 205 Thiolase-like 53920 1 312 Fe-only hydrogenase 53927 12 149 Cytidine deaminase-like 56784 44 226 HAD-like 63418 2 98 MurE/MurF N-terminal domain 63892 1 242 Pyridoxine 5'-phosphate synthase 63965 2 196 Precorrin-8X methylmutase CbiC/CobH 63992 1 274 Dipeptide transport protein 63999 2 195 Thiamin pyrophosphokinase, catalytic domain 64005 2 216 Undecaprenyl diphosphate synthase 64043 1 89 Cell-division inhibitor MinC, N-terminal domain 64076 3 118 MTH938-like 64153 2 224 YjeF N-terminal domain-like 64158 1 234 2,3-Bisphosphoglycerate-independent phosphoglycerate mutase, substrate-binding domain 64167 2 258 SurE-like 64182 2 286 DHH phosphoesterases 68923 4 219 PEP carboxykinase N-terminal domain 69500 2 166 DTD-like 69572 3 389 Activating enzymes of the ubiquitin-like proteins 69593 1 350 Glycerol-3-phosphate (1)-acyltransferase 69618 2 257 HemD-like 75098 1 457 Monomethylamine methyltransferase MtmB 75138 2 130 HPr kinase/phoshatase HprK N-terminal domain 75169 8 111 DsrEFH-like 75181 1 148 Hypothetical protein MTH777 (MT0777) 75217 13 174 alpha/beta knot 75304 4 469 Amidase signature (AS) enzymes 82282 2 324 Homocysteine S-methyltransferase 82317 1 162 Swiveling domain of dehydratase reactivase alpha subunit 82544 1 411 GckA/TtuD-like 82549 4 304 DAK1/DegV-like 88713 13 277 Glycoside hydrolase/deacetylase 89550 3 219 PHP domain-like 89562 1 156 RraA-like 89623 2 149 Ribose/Galactose isomerase RpiB/AlsB 89733 3 328 L-sulfolactate dehydrogenase-like 89796 3 380 CoA-transferase family III (CaiB/BaiF) 100950 20 236 NagB/RpiA/CoA transferase-like 102110 1 251 (2r)-phospho-3-sulfolactate synthase ComA 102114 3 358 Radical SAM enzymes 102198 2 196 Putative cyclase 102215 1 257 Creatininase 102220 1 110 DNA polymerase III psi subunit 102324 1 266 F420-dependent methylenetetrahydromethanopterin dehydrogenase (MTD) 102400 1 147 DNA polymerase III chi subunit 102405 5 176 MoCo carrier protein-like 102414 1 255 Alpha-2,3/8-sialyltransferase CstII 102462 2 116 Peptidyl-tRNA hydrolase II 102522 1 185 Bacterial fluorinating enzyme, N-terminal domain 102546 1 131 Ribose transport protein RbsD 102588 2 254 LmbE-like 102645 2 242 CoaB-like 102705 3 287 NIF3 (NGG1p interacting factor 3)-like 102712 1 108 JAB1/MPN domain 110391 1 168 GlpP-like 110395 1 225 CutC-like 110399 1 237 ThiG-like 110455 2 110 Toprim domain 110581 1 282 Indigoidine synthase A-like 110710 1 189 Hypothetical protein TT1679 110738 1 371 Glycerate kinase I 117396 2 251 TM1631-like 117457 1 170 FumA C-terminal domain-like 141868 1 254 EAL domain-like 141986 1 138 LD-carboxypeptidase A C-terminal domain-like 142019 1 243 Nqo1 FMN-binding domain-like 142338 2 304 CofD-like 142433 1 167 CinA-like 142535 2 272 AF0625-like 142695 1 171 RibA-like 142754 1 271 NadA-like 142764 1 412 YgbK-like 142795 1 297 CAC2185-like 142823 1 228 ComB-like

Alpha and Beta Proteins(a+b)

superfamily
code
  Num. of 
members
  Average 
size
  Superfamily 
name
48403 14 213 Ankyrin repeat 53933 4 117 Microbial ribonucleases 53955 12 179 Lysozyme-like 54060 7 170 His-Me finger endonucleases 54076 4 122 RNase A-like 54098 2 104 Prion-like 54106 2 48 LysM domain 54111 1 100 Urease, gamma-subunit 54117 14 71 Interleukin 8-like chemokines 54171 5 70 DNA-binding domain 54184 2 60 Penicillin-binding protein 2x (pbp-2x), c-terminal domain 54189 5 114 Ribosomal proteins S24e, L23 and L15e 54197 8 152 HIT-like 54211 16 174 Ribosomal protein S5 domain 2-like 54236 25 83 Ubiquitin-like 54277 12 90 CAD & PB1 domains 54285 8 80 MoaD/ThiS 54292 18 101 2Fe-2S ferredoxin-like 54328 4 115 Staphylokinase/streptokinase 54334 9 109 Superantigen toxins, C-terminal domain 54358 2 64 Immunoglobulin-binding domains 54364 1 76 Translation initiation factor IF3, N-terminal domain 54368 1 100 Glutamine synthetase, N-terminal domain 54373 15 110 FAD-linked reductases, C-terminal domain 54403 8 110 Paramphistomum epiclitum [TaxId: 54403] 54416 9 109 Amine oxidase N-terminal region 54423 3 60 DsbC/DsbG N-terminal domain-like 54427 21 145 NTF2-like 54441 1 83 Uracil-DNA glycosylase inhibitor protein 54447 6 127 ssDNA-binding transcriptional regulator domain 54452 15 149 MHC antigen-recognition domain 54495 16 144 UBC-like 54506 10 168 Diaminopimelate epimerase-like 54511 3 225 GFP-like 54518 2 212 Tubby C-terminal domain-like 54523 7 131 Pili subunits 54529 2 182 Mitochondrial glycoprotein MAM33-like 54534 10 137 FKBP-like 54552 1 84 Colicin E3 immunity protein 54556 7 74 Chitinase insertion domain 54565 1 83 Ribosomal protein S16 54570 1 80 Ribosomal protein S19 54575 1 82 Ribosomal protein L31e 54580 1 67 Allophycocyanin linker chain (domain) 54585 5 94 Cdc48 domain 2-like 54593 13 157 Glyoxalase/Bleomycin resistance protein/Dihydroxybiphenyl dioxygenase 54611 1 134 Bacterial protein-export protein SecB 54616 1 99 DNA-binding domain of Mlu1-box binding protein MBP1 54621 1 173 Heme-binding protein A (HasA) 54626 1 212 Chalcone isomerase 54631 20 66 CBS-domain 54637 45 135 Thioesterase/thiol ester dehydrase-isomerase 54648 1 85 DLC 54654 3 65 CI-2 family of serine protease inhibitors 54665 6 138 CO dehydrogenase molybdoprotein N-domain-like 54675 8 130 Nicotinate/Quinolinate PRTase N-terminal domain-like 54680 3 102 Pyrimidine nucleoside phosphorylase C-terminal domain 54686 2 144 Ribosomal protein L16p/L10e 54690 1 142 Molybdopterin synthase subunit MoaE 54695 8 100 POZ domain 54713 5 118 Elongation factor Ts (EF-Ts), dimerisation domain 54719 4 110 Fe,Mn superoxide dismutase (SOD), C-terminal domain 54736 2 78 ClpS-like 54747 2 78 Ribosomal L11/L12e N-terminal domain 54752 2 60 RecA protein, C-terminal domain 54762 2 82 Signal recognition particle alu RNA binding heterodimer, SRP9/14 54768 16 90 dsRNA-binding domain-like 54782 1 88 Porphobilinogen deaminase (hydroxymethylbilane synthase), C-terminal domain 54786 2 73 YcfA/nrd intein domain 54791 19 85 Eukaryotic type KH-domain (KH-domain type I) 54806 2 75 Alpha-lytic protease prodomain 54810 1 121 GMP synthetase C-terminal dimerisation domain 54814 7 86 Prokaryotic type KH domain (KH-domain type II) 54821 1 101 Ribosomal protein S3 C-terminal domain 54826 16 124 Enolase N-terminal domain-like 54843 2 130 Ribosomal protein L22 54849 2 102 GroEL-intermediate domain like 54857 1 81 DNA damage-inducible protein DinI 54893 2 96 Aspartate carbamoyltransferase, Regulatory-chain, N-terminal domain 54897 6 84 Protease propeptides/inhibitors 54909 27 139 Dimeric alpha+beta barrel 54913 9 95 GlnB-like 54919 1 153 Nucleoside diphosphate kinase, NDK 54928 46 91 RNA-binding domain, RBD 54957 3 106 Viral DNA-binding domain 54966 4 130 RuBisCO, large subunit, small (N-terminal) domain 54975 7 109 54975 7 109 Acylphosphatase/BLUF domain-like 54980 8 77 EF-G C-terminal domain-like 54984 2 90 eEF-1beta-like 54991 1 104 Anticodon-binding domain of PheRS 54995 2 102 Ribosomal protein S6 54999 1 98 Ribosomal protein S10 55008 12 72 HMA, heavy metal-associated domain 55021 23 79 ACT-like 55031 7 109 Bacterial exopeptidase dimerisation domain 55035 2 114 NAD-binding domain of HMG-CoA reductase 55040 1 143 Molybdenum cofactor biosynthesis protein C, MoaC 55044 1 158 TRADD, N-terminal domain 55048 2 66 Probable ACP-binding domain of malonyl-CoA ACP transacylase 55052 2 77 CheY-binding domain of CheA 55056 1 79 Killer toxin KP6 alpha-subunit 55060 8 162 GHMP Kinase, C-terminal domain 55064 1 122 Translational regulator protein regA 55068 2 178 Peptide methionine sulfoxide reductase 55073 5 195 Nucleotide cyclase 55083 1 158 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase, HPPK 55103 4 269 FAD-linked oxidases, C-terminal domain 55112 2 148 Formylmethanofuran:tetrahydromethanopterin formyltransferase 55116 2 160 Formiminotransferase domain of formiminotransferase-cyclodeaminase. 55120 7 220 Pseudouridine synthase 55124 2 70 Sulfite reductase, domains 1 and 3 55129 2 107 Ribosomal protein L30p/L7e 55136 4 168 Probable bacterial effector-binding domain 55144 3 196 LigT-like 55149 1 127 Pepsin inhibitor-3 55154 4 191 CYTH-like phosphatases 55159 2 104 eIF1-like 55166 4 182 Hedgehog/DD-peptidase 55174 6 80 Alpha-L RNA-binding motif 55186 2 156 ThrRS/AlaRS common domain 55190 2 115 Arginyl-tRNA synthetase (ArgRS), N-terminal 'additional' domain 55194 2 134 Ribosome recycling factor, RRF 55200 1 88 Translation initiation factor IF3, C-terminal domain 55205 3 424 EPT/RTPC-like 55221 2 122 Yeast killer toxins 55229 1 58 Cell division protein MinE topological specificity domain 55234 1 68 Cyanase C-terminal domain 55239 4 119 RuBisCO, small subunit 55248 2 88 PCD-like 55252 2 71 C-terminal domain of arginine repressor 55257 4 113 RBP11-like subunits of RNA polymerase 55261 3 128 GAD domain 55267 3 69 tRNA-intron endonuclease N-terminal domain-like 55271 2 116 DNA repair protein MutS, domain I 55277 2 70 GYF domain 55282 2 160 Ribosomal protein L5 55287 1 72 RPB5-like RNA polymerase subunit 55298 5 123 YjgF-like 55307 5 146 Tubulin C-terminal domain-like 55315 7 105 L30e-like 55326 5 171 PurM N-terminal domain-like 55331 9 108 Tautomerase/MIF 55347 24 143 Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain 55383 1 86 Copper amine oxidase, domain N 55387 4 116 Frataxin/Nqo15-like 55394 2 228 Bactericidal permeability-increasing protein, BPI 55399 1 107 Subtilisin inhibitor 55405 3 126 RNA bacteriophage capsid protein 55418 3 205 eIF4e-like 55424 12 115 55447 5 111 55455 2 78 SRF-like 55464 5 144 Origin of replication-binding domain, RBD-like 55469 10 212 FMN-dependent nitroreductase-like 55481 1 138 N-terminal domain of eukaryotic peptide chain release factor subunit 1, ERF1 55486 18 226 Metalloproteases ("zincins"), catalytic domain 55545 7 135 beta-N-acetylhexosaminidase-like domain 55550 21 108 SH2 domain 55594 3 87 HPr-like 55604 1 77 Glucose permease domain IIB 55608 12 115 Homing endonucleases 55620 12 150 Tetrahydrobiopterin biosynthesis enzymes-like 55637 1 101 Cell cycle regulatory proteins 55648 1 165 beta-lactamase-inhibitor protein, BLIP 55653 1 94 Ribosomal protein L9 C-domain 55658 2 49 L9 N-domain-like 55666 3 94 Ribonuclease PH domain 2-like 55671 1 104 Regulatory factor Nef 55676 2 209 CytB endotoxin-like 55681 19 298 Class II aaRS and biotin synthetases 55711 3 113 Subdomain of clathrin and coatomer appendage domain 55718 4 124 Sterol carrier protein, SCP 55729 48 157 55729 48 157 Acyl-CoA N-acyltransferases (Nat) 55753 14 124 Actin depolymerizing proteins 55770 3 130 Profilin (actin-binding protein) 55781 5 168 GAF domain-like 55785 8 114 PYP-like sensor domain (PAS domain) 55797 4 164 PR-1-like 55804 4 186 Phoshotransferase/anion transport protein 55811 29 161 Nudix 55816 1 188 5'-nucleotidase (syn. UDP-sugar hydrolase), C-terminal domain 55821 5 205 YrdC/RibB 55826 3 154 YbaK/ProRS associated domain 55831 3 261 Thymidylate synthase/dCMP hydroxymethylase 55846 8 167 N-acetylmuramoyl-L-alanine amidase-like 55856 5 91 Cytochrome b5-like heme/steroid binding domain 55869 1 77 DNA topoisomerase I domain 55874 9 200 ATPase domain of HSP90 chaperone/DNA topoisomerase II/histidine kinase 55890 1 168 Sporulation response regulatory protein Spo0B 55895 7 204 Ribonuclease Rh-like 55904 1 161 Ornithine decarboxylase C-terminal domain 55909 11 344 Pentein 55920 7 249 Creatinase/aminopeptidase 55945 5 99 TATA-box binding protein-like 55957 3 116 Phosphoglucomutase, C-terminal domain 55961 22 187 Bet v1-like 55979 22 118 DNA clamp 56003 5 631 Molybdenum cofactor-binding domain 56014 2 158 Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 56019 1 196 The spindle assembly checkpoint protein mad2 56024 10 205 Phospholipase D/nuclease 56029 3 108 Monooxygenase (hydroxylase) regulatory protein 56042 6 162 PurM C-terminal domain-like 56047 2 128 Ribosomal protein S8 56053 4 84 Ribosomal protein L6 56059 14 215 Glutathione synthetase ATP-binding domain-like 56091 8 238 DNA ligase/mRNA capping enzyme, catalytic domain 56112 37 294 Protein kinase-like (PK-like) 56176 10 201 FAD-binding domain 56194 2 126 Uridine diphospho-N-Acetylenolpyruvylglucosamine reductase, MurB, C-terminal domain 56199 1 316 Methenyltetrahydromethanopterin cyclohydrolase 56204 2 362 Hect, E3 ligase catalytic domain 56209 1 193 Nitrile hydratase alpha chain 56214 3 116 4'-phosphopantetheinyl transferase 56219 9 266 DNase I-like 56228 1 210 Aldehyde ferredoxin oxidoreductase, N-terminal domain 56235 26 221 N-terminal nucleophile aminohydrolases (Ntn hydrolases) 56266 2 370 DmpA/ArgJ-like 56271 2 234 Pyruvoyl-dependent histidine and arginine decarboxylases 56276 3 244 S-adenosylmethionine decarboxylase 56281 19 249 Metallo-hydrolase/oxidoreductase 56300 16 264 Metallo-dependent phosphatases 56317 4 275 Carbon-nitrogen hydrolase 56322 6 437 ADC synthase 56327 13 166 LDH C-terminal domain-like 56349 7 212 DNA breaking-rejoining enzymes 56366 1 126 SMAD MH1 domain 56371 9 254 Ribosome inactivating proteins (RIP) 56399 3 219 ADP-ribosylation 56420 5 171 Peptide deformylase 56425 4 131 Succinate dehydrogenase/fumarate reductase flavoprotein, catalytic domain 56436 21 130 C-type lectin-like 56487 2 111 SRCR-like 56491 1 96 A heparin-binding domain 56496 3 225 Fibrinogen C-terminal domain-like 56502 1 306 gp120 core 56507 2 262 Methionine synthase activation domain-like 56512 2 383 Nitric oxide (NO) synthase oxygenase domain 56519 2 135 Penicillin binding protein dimerisation domain 56524 2 254 Oxidoreductase molybdopterin-binding domain 56529 6 238 FAH 56534 2 290 Aromatic aminoacid monoxygenases, catalytic and oligomerization domains 56542 2 274 Substrate-binding domain of HMG-CoA reductase 56548 1 311 Conserved core of transcriptional regulatory protein vp16 56553 2 126 Insert subdomain of RNA polymerase alpha subunit 56558 1 208 Baseplate structural protein gp11 56563 1 280 Major capsid protein gp5 56747 4 264 Prim-pol domain 63411 20 218 LuxS/MPP-like metallohydrolase 63763 3 94 SAND domain-like 64210 1 58 Head-to-tail joining protein W, gpW 64234 1 138 Photosystem I subunit PsaD 64263 1 105 Prokaryotic ribosomal protein L17 64268 5 129 PX domain 64288 2 161 Chorismate lyase-like 64307 3 86 SirA-like 64356 5 137 SNARE-like 64376 1 94 YlxR-like 64383 1 139 Cell-division protein ZipA, C-terminal domain 64397 2 232 Hsp33 domain 64438 3 256 CNF1/YfiH-like putative cysteine hydrolases 64449 1 123 YopH tyrosine phosphatase N-terminal domain 64465 1 365 Outer capsid protein sigma 3 64496 2 82 64586 3 69 C-terminal domain of ProRS 68930 1 104 Protein-L-isoaspartyl O-methyltransferase, C-terminal domain 69635 9 123 Type III secretory system chaperone 69645 3 150 Arp2/3 complex subunits 69652 1 108 DNA-binding C-terminal domain of the transcription factor MotA 69687 1 85 Integrin beta tail domain 69695 3 102 SRP19 69705 2 115 Transcription factor NusA, N-terminal domain 69721 1 111 DsrC, the gamma subunit of dissimilatory sulfite reductase 69737 2 68 Urease metallochaperone UreE, C-terminal domain 69742 1 143 Glutamyl tRNA-reductase catalytic, N-terminal domain 69754 1 112 Ribosome binding protein Y (YfiA homologue) 69761 1 83 GTP cyclohydrolase I feedback regulatory protein, GFRP 69765 2 152 IpsF-like 69786 2 106 YggU-like 69796 1 219 Thymidylate synthase-complementing protein Thy1 69819 2 132 MTH1598-like 69848 1 100 LCCL domain 69864 2 242 Argininosuccinate synthetase, C-terminal domain 74653 3 101 TolA/TonB C-terminal domain 75347 1 170 Rotavirus NSP2 fragment, C-terminal domain 75399 2 214 Plakin repeat 75404 1 163 VSV matrix protein 75412 1 88 Hypothetical protein MTH1880 75420 1 90 YhbC-like, N-terminal domain 75445 2 71 D-ribose-5-phosphate isomerase (RpiA), lid domain 75471 2 96 YhbY-like 75500 1 103 Putative transcriptional regulator TM1602, C-terminal domain 75516 1 165 Pheromone-binding domain of LuxR-like quorum-sensing transcription factors 75553 1 161 Smc hinge domain 75569 1 202 Archaeal IMP cyclohydrolase PurO 75574 1 143 Rotavirus NSP2 fragment, N-terminal domain 81271 4 69 TGS-like 81301 13 182 Nucleotidyltransferase 81606 2 262 PP2C-like 81660 4 170 Metal cation-transporting ATPase, ATP-binding domain N 82602 1 135 Nuclease A inhibitor (NuiA) 82607 1 85 YbaB-like 82649 5 129 SufE/NifU 82653 1 81 Probable GTPase Der, C-terminal domain 82657 2 105 BolA-like 82671 1 132 SEA domain 82679 2 110 N-utilization substance G protein NusG, N-terminal domain 82689 1 101 Mechanosensitive channel protein MscS (YggB), C-terminal domain 82693 4 101 Multidrug efflux transporter AcrB pore domain; PN1, PN2, PC1 and PC2 subdomains 82697 3 79 PurS-like 82704 3 88 AlbA-like 82708 3 91 R3H domain 82714 2 90 Multidrug efflux transporter AcrB TolC docking domain; DN and DC subdomains 82754 2 142 C-terminal, gelsolin-like domain of Sec23/24 82771 1 97 GIY-YIG endonuclease 82784 5 136 OsmC-like 82808 1 115 Replication modulator SeqA, C-terminal DNA-binding domain 82829 2 90 MesJ substrate recognition domain-like 88798 2 73 N-terminal, heterodimerisation domain of RBP7 (RpoE) 88802 4 98 Pre-PUA domain 88874 1 198 Receptor-binding domain of short tail fibre protein gp12 89807 1 64 Flavin-binding protein dodecin 89811 1 64 Amyloid beta a4 protein copper binding domain (domain 2) 89817 1 144 Mago nashi protein 89837 1 101 Doublecortin (DC) 89872 2 128 Inhibitor of vertebrate lysozyme, Ivy 89890 1 94 Proguanylin 89895 2 94 FYSH domain 89915 1 122 DNA-binding protein Tfx 89919 2 98 Ribosome-binding factor A, RbfA 89942 1 162 eEF1-gamma domain 89946 1 132 Hypothetical protein VC0424 89957 6 109 MTH1187/YkoF-like 89963 2 81 YajQ-like 89975 1 105 Hypothetical protein Yml108w 90002 1 95 Hypothetical protein YjiA, C-terminal domain 90064 1 146 Hypothetical protein TM0875 90073 1 158 GCM domain 100879 5 105 Lesion bypass DNA polymerase (Y-family), little finger domain 100966 1 52 Translation initiation factor 2 beta, aIF2beta, N-terminal domain 102735 1 117 Trigger factor ribosome-binding domain 102741 1 76 Obg GTP-binding protein C-terminal domain 102816 1 107 Putative dsDNA mimic 102824 2 100 Colicin D/E5 nuclease domain 102829 1 90 Cell division protein ZapA-like 102848 1 102 NSFL1 (p97 ATPase) cofactor p47, SEP domain 102860 1 101 mRNA decapping enzyme DcpS N-terminal domain 102875 1 93 Chromosomal protein MC1 102886 2 270 Coproporphyrinogen III oxidase 102891 1 97 Hypothetical protein Ta1206 103007 1 98 Hypothetical protein TT1725 103025 4 281 Folate-binding domain 103032 1 254 Hypothetical protein YwqG 103039 2 178 CheC-like 103054 1 74 General secretion pathway protein M, EpsM 103063 1 60 Hypothetical protein YoaG 103068 3 87 Nucleocapsid protein dimerization domain 103084 1 118 Holliday junction resolvase RusA 103088 2 123 OmpA-like 103107 1 139 Hypothetical protein c14orf129, hspc210 103111 1 132 Activator of Hsp90 ATPase, Aha1 103145 1 117 Tombusvirus P19 core protein, VP19 103165 1 159 Ta1353-like 103190 3 135 Sensory domain-like 103196 4 118 Roadblock/LC7 domain 103239 1 78 MoaD-related protein, C-terminal domain 103243 1 102 Kinase associated domain 1, KA1 103247 2 126 TT1751-like 103256 1 140 Hypothetical protein TM0160 103263 3 327 Chorismate synthase, AroC 103277 1 159 Hypothetical protein HI1480 103359 1 236 Suppressor of Fused, N-terminal domain 103365 1 480 Hypothetical protein PH1602 103370 1 141 NinB 110783 1 91 Hypothetical protein MTH677 110814 1 83 TmoB-like 110836 1 79 Hypothetical protein SAV1430 110849 2 158 ParB/Sulfiredoxin 110857 3 126 BtrG-like 110916 1 112 Peptidyl-tRNA hydrolase domain-like 110921 1 114 2-isopropylmalate synthase LeuA, allosteric (dimerisation) domain 110942 1 112 HSP90 C-terminal domain 110993 2 103 eIF-2-alpha, C-terminal domain 110997 1 77 Sporulation related repeat 111006 1 125 Dystroglycan, domain 2 111038 3 135 YjbQ-like 111057 1 94 Hypothetical protein PF0899 111064 1 144 Hut operon positive regulatory protein HutP 111069 1 157 Hypothetical protein yfbM 111074 1 103 Bacillus phage protein 111126 2 174 Ligand-binding domain in the NO signalling and Golgi transport 111148 1 75 YggX-like 111171 1 119 Rbstp2229 protein 111249 1 359 Sulfolobus fructose-1,6-bisphosphatase-like 111265 1 149 Hemolytic lectin CEL-III, C-terminal domain 111278 1 189 SSo0622-like 111283 2 432 Putative modulator of DNA gyrase, PmbA/TldD 116726 2 93 TrkA C-terminal domain-like 116734 5 193 DNA methylase specificity domain 117773 1 99 GTF2I-like repeat 117778 1 52 D-lysine 5,6-aminomutase beta subunit KamE, N-terminal domain 117782 1 103 YbjQ-like 117839 1 110 WWE domain 117856 2 270 AF0104/ALDC/Ptd012-like 117892 1 143 Band 7/SPFH domain 117916 4 86 Fe-S cluster assembly (FSCA) domain-like 117987 2 94 CRISPR-associated protein 117991 1 87 YbeD-like 118001 1 71 YehU-like 118010 1 94 Hypothetical protein TM1457 118104 1 157 RalF, C-terminal domain 118116 1 180 DNA mismatch repair protein MutL 118173 1 111 Phosphoprotein M1, C-terminal domain 142877 2 211 EndoU-like 142887 1 55 PhtA domain-like 142897 1 63 TFB5-like 142906 2 124 YjbR-like 142913 2 184 YktB/PF0168-like 142921 1 126 WGR domain-like 142984 1 84 Nqo1 middle domain-like 143011 3 86 RelE-like 143021 1 120 Ns1 effector domain-like 143026 2 73 Kinetochore globular domain 143034 1 64 L35p-like 143076 1 155 Coronavirus NSP8-like 143081 4 218 BB1717-like 143100 1 70 TTHA1013-like 143113 1 283 NAP-like 143120 2 66 YefM-like 143212 1 83 Rv2632c-like 143243 1 191 Nqo5-like 143410 1 113 DOPA-like 143414 2 98 CcmK-like 143422 2 130 Transposase IS200-like 143430 1 82 TTP0101/SSO1404-like 143437 3 147 THUMP domain-like 143447 1 201 AMMECR1-like 143456 3 179 VC0467-like 143469 1 83 ImmE5-like 143477 1 124 TM1622-like 143492 1 301 Prenyltransferase-like 143503 1 99 PUG domain-like 143517 1 158 TRCF domain-like 143548 2 136 Serine metabolism enzymes domain 143555 1 147 FwdE-like 143560 2 114 MK0786-like 143567 1 75 YkuJ-like 143575 1 85 GAS2 domain-like 143579 1 94 GK1464-like 143587 1 183 SARS receptor-binding domain-like 143592 1 123 TTHA1528-like 143597 1 201 YojJ-like 143602 2 110 STIV B116-like 143631 1 304 ApbE-like 143724 2 194 PHP14-like 143737 1 115 YeeU-like 143744 1 142 GlcG-like 143749 2 132 Phage tail protein-like 143791 1 120 DUSP-like 143800 2 79 L28p-like 143842 1 198 YwmB-like 143847 3 107 XisI-like 143856 1 96 DeoB insert domain-like 143865 1 220 CorA soluble domain-like 143870 1 136 PF0523-like 143875 1 100 ERH-like 143880 1 84 NE0471 N-terminal domain-like 143885 1 100 RGC domain-like 143968 1 161 UbiD C-terminal domain-like 143975 1 322 IlvD/EDD N-terminal domain-like 143985 1 122 L,D-transpeptidase pre-catalytic domain-like 143990 1 160 YbiA-like 143995 1 88 AF2331-like 144000 1 433 Oxysterol-binding protein-like 144005 1 118 ORC1-binding domain 144010 1 248 CofE-like 144015 1 187 Peptidoglycan deacetylase N-terminal noncatalytic region

Multi-domain proteins (alpha and beta)

superfamily
code
  Num. of 
members
  Average 
size
  Superfamily 
name
56574 11 369 Serpins 56596 1 305 Replication terminator protein (Tus) 56601 24 299 beta-lactamase/transpeptidase-like 56634 3 518 Heme-dependent catalase-like 56645 10 237 Acyl-CoA dehydrogenase NM domain-like 56655 7 308 Carbohydrate phosphatase 56672 6 504 DNA/RNA polymerases 56712 3 569 Prokaryotic type I DNA topoisomerase 56719 2 578 Type II DNA topoisomerase 56726 1 289 DNA topoisomerase IV, alpha subunit 56731 2 251 DNA primase core 56741 1 221 Eukaryotic DNA topoisomerase I, N-terminal DNA-binding fragment 56752 4 303 D-aminoacid aminotransferase-like PLP-dependent enzymes 56762 3 463 HydB/Nqo4-like 56770 2 206 HydA/Nqo6-like 56796 7 370 Dehydroquinate synthase-like 56801 3 511 Acetyl-CoA synthetase-like 56808 3 216 Ribosomal protein L1 56815 2 552 Sec1/munc18-like (SM) proteins 56826 1 249 Upper collar protein gp10 (connector protein) 64518 1 395 Phase 1 flagellin 69903 1 154 NSP3 homodimer 69908 1 641 Membrane penetration protein mu1 75615 2 110 Siroheme synthase middle domains-like 75620 2 336 Release factor 75625 2 230 YebC-like 75632 1 276 Cullin homology domain 81298 1 498 Adenylylcyclase toxin (the edema factor) 82856 1 651 L-A virus major coat protein 90096 2 272 Subunits of heterodimeric actin filament capping protein Capz 103378 1 461 2-methylcitrate dehydratase PrpD 103383 1 290 Antivirulence factor 103388 1 272 Virulence-associated V antigen 103409 1 189 39 kda initiator binding protein, IBP39, C-terminal domains 103417 1 542 Major capsid protein VP5 111304 1 199 Recombination protein RecR 111321 3 294 AF1104-like 111326 1 554 Urocanase 111331 2 258 NAD kinase 111337 1 280 QueA-like 111342 1 282 CbiD-like 111347 1 330 Rap/Ran-GAP 118196 1 183 YaeB-like 118203 1 364 Vacuolar ATP synthase subunit C 118208 1 1029 Viral ssDNA binding protein 144020 1 285 FdhE-like 144052 2 405 Thermophilic metalloprotease-like 144059 1 259 ImpE-like 144064 2 248 Heme iron utilization protein-like 144074 2 124 E2F-DP heterodimerization region

Membrane and cell surface proteins and peptides

superfamily
code
  Num. of 
members
  Average 
size
  Superfamily 
name
56837 2 186 Colicin 56845 1 178 Diphtheria toxin, middle domain 56849 3 238 delta-Endotoxin (insectocide), N-terminal domain 56854 9 164 Bcl-2 inhibitors of programmed cell death 56864 1 143 Exotoxin A, middle domain 56918 6 49 Light-harvesting complex subunits 56925 4 147 OMPA-like 56931 1 253 Outer membrane phospholipase A (OMPLA) 56935 6 349 Porins 56954 2 440 Outer membrane efflux proteins (OEP) 56959 2 278 Leukocidin-like 56973 2 321 Aerolisin/ETX pore-forming domain 56978 1 471 Perfringolysin 56983 2 297 Viral glycoprotein, central and dimerisation domains 56988 1 665 Anthrax protective antigen 69917 2 273 OMPT-like 69922 1 265 Head and neck region of the ectodomain of NDV fusion glycoprotein 81321 5 250 Family A G protein-coupled receptor-like 81324 3 100 Voltage-gated potassium channels 81327 1 81 Small-conductance potassium channel 81330 1 109 Gated mechanosensitive channel 81333 1 79 F1F0 ATP synthase subunit C 81336 1 142 F1F0 ATP synthase subunit A 81338 3 240 Aquaporin-like 81340 1 444 Clc chloride channel 81343 5 149 Fumarate reductase respiratory complex transmembrane subunits 81345 1 313 ABC transporter involved in vitamin B12 uptake, BtuC 81406 1 144 Mitochondrial cytochrome c oxidase subunit IV 81411 1 83 Mitochondrial cytochrome c oxidase subunit VIa 81415 1 72 Mitochondrial cytochrome c oxidase subunit VIc 81419 1 58 Mitochondrial cytochrome c oxidase subunit VIIa 81423 1 49 Mitochondrial cytochrome c oxidase subunit VIIb 81427 1 46 Mitochondrial cytochrome c oxidase subunit VIIc (aka VIIIa) 81431 1 43 Mitochondrial cytochrome c oxidase subunit VIIIb (aka IX) 81442 3 521 Cytochrome c oxidase subunit I-like 81452 2 222 Cytochrome c oxidase subunit III-like 81464 3 93 Cytochrome c oxidase subunit II-like, transmembrane region 81469 1 42 Bacterial aa3 type cytochrome c oxidase subunit IV 81473 1 33 Bacterial ba3 type cytochrome c oxidase subunit IIa 81483 2 291 Bacterial photosystem II reaction centre, L and M subunits 81490 3 32 Photosystem II reaction centre subunit H, transmembrane region 81496 1 46 Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor 81502 4 50 ISP transmembrane anchor 81508 2 83 Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 81514 2 44 Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 81518 1 51 Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 81524 2 112 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 81531 2 70 Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 81536 1 141 Subunit III of photosystem I reaction centre, PsaF 81540 1 38 Subunit VIII of photosystem I reaction centre, PsaI 81544 1 41 Subunit IX of photosystem I reaction centre, PsaJ 81548 1 31 Subunit XII of photosystem I reaction centre, PsaM 81552 1 29 Subunit PsaX of photosystem I reaction centre 81558 1 740 Photosystem I subunits PsaA/PsaB 81563 1 46 Photosystem I reaction center subunit X, PsaK 81568 1 151 Photosystem I reaction center subunit XI, PsaL 81573 1 61 F1F0 ATP synthase subunit B, membrane domain 81597 1 45 Iron-sulfur subunit of formate dehydrogenase N, transmembrane anchor 81648 2 138 a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) 81665 1 472 Calcium ATPase, transmembrane domain M 82861 1 86 Mechanosensitive channel protein MscS (YggB), transmembrane region 82866 2 210 Multidrug efflux transporter AcrB transmembrane domain 90112 2 127 Neurotransmitter-gated ion-channel transmembrane pore 90123 2 300 ABC transporter transmembrane region 103431 1 45 Cytochrome f subunit of the cytochrome b6f complex, transmembrane anchor 103436 2 32 PetL subunit of the cytochrome b6f complex 103441 2 33 PetM subunit of the cytochrome b6f complex 103446 1 30 PetG subunit of the cytochrome b6f complex 103451 1 31 PetN subunit of the cytochrome b6f complex 103456 1 56 Preprotein translocase SecE subunit 103460 1 32 Sec-beta subunit 103464 1 36 Oligosaccharyltransferase subunit ost4p 103473 2 426 MFS general substrate transporter 103481 1 106 Multidrug resistance efflux transporter EmrE 103486 1 312 V-type ATP synthase subunit C 103491 1 410 Preprotein translocase SecY subunit 103501 1 223 Respiratory nitrate reductase 1 gamma chain 103506 1 292 Mitochondrial carrier 103511 1 218 Chlorophyll a-b binding protein 103515 1 279 Autotransporter 111352 1 372 Ammonium transporter 111357 1 66 Mitochondrial ATP synthase coupling factor 6 111364 1 251 Tsx-like channel 111369 1 237 HlyD-like secretion proteins 111379 1 270 VP4 membrane interaction domain 111384 1 84 OmpH-like 118215 1 405 Proton glutamate symport protein 118220 1 132 Connexin43 144083 1 50 Magnesium transport protein CorA, transmembrane region 144091 2 186 Rhomboid-like

Small proteins

superfamily
code
  Num. of 
members
  Average 
size
  Superfamily 
name
56994 3 49 Insulin-like 57007 1 48 Heat-stable enterotoxin B 57011 1 54 Neurotoxin B-IV 57016 3 42 Plant lectins/antimicrobial peptides 57027 3 32 Plant inhibitors of proteinases and amylases 57038 3 32 Cyclotides 57048 3 36 Gurmarin-like 57055 1 46 Agouti-related protein 57059 13 36 omega toxin-like 57095 26 45 Scorpion toxin-like 57180 1 36 Cellulose-binding domain 57184 2 151 Growth factor receptor domain 57190 4 41 Colipase-like 57196 23 45 EGF/Laminin 57243 2 26 Bromelain inhibitor VI (cysteine protease inhibitor) 57247 2 66 Bowman-Birk inhibitor, BBI 57256 1 47 Elafin-like 57262 5 52 Leech antihemostatic proteins 57277 1 30 Granulin repeat 57283 2 33 PMP inhibitors 57288 2 51 Midkine 57296 1 40 Amb V allergen 57302 14 71 Snake toxin-like 57362 9 59 BPTI-like 57392 13 40 Defensin-like 57414 3 89 Hairpin loop containing domain-like 57419 1 27 Neurotoxin III (ATX III) 57424 6 44 LDL receptor-like module 57429 2 46 Crambin-like 57440 6 74 Kringle-like 57492 2 52 Trefoil 57501 10 102 Cystine-knot cytokines 57535 27 63 Complement control module/SCR domain 57546 3 43 Crisp domain-like 57552 2 58 Blood coagulation inhibitor (disintegrin) 57561 1 124 Methylamine dehydrogenase, L chain 57567 4 59 Serine protease inhibitors 57581 3 71 TB module/8-cys domain 57586 18 43 TNF receptor-like 57593 1 55 Heparin-binding domain from vascular endothelial growth factor 57598 1 51 Antifungal protein (AGAFP) 57603 6 50 FnI-like domain 57610 2 86 Thyroglobulin type-1 domain 57615 1 50 Type X cellulose binding domain, CBDX 57620 1 61 Carboxypeptidase inhibitor 57625 2 54 Invertebrate chitin-binding proteins 57630 3 33 GLA-domain 57642 1 47 Cholecystokinin A receptor, N-domain 57647 1 45 HIV-1 VPU cytoplasmic domain 57652 5 72 HIPIP (high potential iron protein) 57662 1 109 Ferredoxin thioredoxin reductase (FTR), catalytic beta chain 57667 42 34 C2H2 and C2HC zinc fingers 57701 5 45 Zn2/Cys6 DNA-binding domain 57716 22 35 Glucocorticoid receptor-like (DNA-binding domain) 57756 4 34 Retrovirus zinc finger-like domains 57770 1 35 Methionyl-tRNA synthetase (MetRS), Zn-domain 57774 3 35 Microbial and mitochondrial ADK, insert "zinc finger" domain 57783 13 61 Zinc beta-ribbon 57798 1 159 Casein kinase II beta subunit 57802 6 56 Rubredoxin-like 57821 1 71 Hypothetical protein MTH1184 57825 2 54 Aspartate carbamoyltransferase, Regulatory-chain, C-terminal domain 57829 6 64 Zn-binding ribosomal proteins 57840 1 37 Ribosomal protein L36 57845 1 39 B-box zinc-binding domain 57850 10 78 RING/U-box 57863 2 140 ArfGap/RecO-like zinc finger 57868 9 37 Metallothionein 57879 1 42 Zinc domain conserved in yeast copper-regulated transcription factors 57884 1 92 Ada DNA repair protein, N-terminal domain (N-Ada 10) 57889 5 59 Cysteine-rich domain 57903 11 72 FYVE/PHD zinc finger 57917 2 106 Zn-binding domains of ADDBP 57924 4 108 Inhibitor of apoptosis (IAP) repeat 57933 2 91 TAZ domain 57938 2 76 DnaJ/Hsp40 cysteine-rich domain 63393 2 54 RNA polymerase subunits 64546 1 41 Satiety factor CART (cocaine and amphetamine regulated transcript) 64571 1 46 Cellulose docking domain, dockering 69964 1 51 Pheromone ER-23 75689 1 36 Zinc-binding domain of translation initiation factor 2 beta 82895 1 54 TSP-1 type 1 repeat 82910 1 110 Apical membrane antigen 1 82919 2 76 Zn-finger domain of Sec23/24 82927 1 52 Cysteine-rich DNA binding domain, (DM domain) 90148 1 24 DPY module 90183 1 58 Mollusk pheromone 90188 1 37 Somatomedin B domain 90193 1 35 Notch domain 90209 4 41 Ran BP2/NZF zinc finger-like 90229 3 40 CCCH zinc finger 90234 1 31 Zinc finger domain of DNA polymerase-alpha 100895 3 59 Kazal-type serine protease inhibitors 100897 2 54 Plant proteinase inhibitors 103565 1 64 Bubble protein 103575 3 54 Plexin repeat 103580 1 60 Necrosis inducing protein 1, NIP1 103589 1 24 Mini-collagen I, C-terminal domain 103612 1 81 SBT domain 103623 1 36 Hypothetical protein Ta0289 C-terminal domain 103637 1 48 CCHHC domain 103642 1 24 Sec-C motif 103647 1 124 TSP type-3 repeat 111388 1 50 Pollen allergen ole e 6 111418 1 119 Hormone receptor domain 111423 1 89 Resistin 111430 1 121 YAP1 redox domain 116738 1 27 NADH pyrophosphatase intervening domain 118251 1 80 Variant surface glycoprotein MITAT 1.2, VSG 221, C-terminal domain 118290 1 71 WRKY DNA-binding domain 118310 2 86 AN1-like Zinc finger 118352 2 60 HSP33 redox switch-like 118359 1 86 Expressed protein At2g23090/F21P24.15 144122 2 66 Tim10-like 144129 1 92 Vanabin-like 144206 1 66 NOB1 zinc finger-like 144210 2 54 Nop10-like SnoRNP 144217 2 76 CSL zinc finger 144232 3 50 HIT/MYND zinc finger-like 144246 1 123 Coronavirus NSP10-like 144251 1 32 Viral leader polypeptide zinc finger 144256 1 83 TSP9-like