HEADER    COMPLEX (NUCLEAR PROTEIN/RNA)           
COMPND    MOL_ID: 1;                                                  
COMPND   2 MOLECULE: U2 RNA HAIRPIN IV;                               
COMPND   3 CHAIN: Q, R;                                               
COMPND   4 FRAGMENT: U2 HAIRPIN IV;                                   
COMPND   5 ENGINEERED: YES;                                           
COMPND   6 OTHER_DETAILS: 24 NUCLEOTIDE STEM-LOOP, U2 SNRNP HAIRPIN   
COMPND   7 IV;                                                        
COMPND   8 MOL_ID: 2;                                                 
COMPND   9 MOLECULE: U2 A';                                           
COMPND  10 CHAIN: A, C;                                               
COMPND  11 FRAGMENT: RESIDUES 1 - 176;                                
COMPND  12 ENGINEERED: YES;                                           
COMPND  13 MUTATION: C89D, S119C;                                     
COMPND  14 OTHER_DETAILS: THIS CONSTRUCT CONSISTS OF RESIDUES 1 - 176 
COMPND  15 OF U2 A', WHICH IS A COMPONENT OF U2 SNRNP;                
COMPND  16 MOL_ID: 3;                                                 
COMPND  17 MOLECULE: U2 B'';                                          
COMPND  18 CHAIN: B, D;                                               
COMPND  19 FRAGMENT: N-TERMINAL DOMAIN, RESIDUES 4 - 99;              
COMPND  20 ENGINEERED: YES;                                           
COMPND  21 OTHER_DETAILS: THIS CONSTRUCT CONSISTS OF RESIDUES 5 - 99  
COMPND  22 OF U2 B DOUBLE PRIME, WHICH IS A COMPONENT OF U2 SNRNP     
SOURCE    MOL_ID: 1;                                                  
SOURCE   2 SYNTHETIC: YES;                                            
SOURCE   3 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                         
SOURCE   4 ORGANISM_COMMON: HUMAN;                                    
SOURCE   5 MOL_ID: 2;                                                 
SOURCE   6 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                         
SOURCE   7 ORGANISM_COMMON: HUMAN;                                    
SOURCE   8 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                       
SOURCE   9 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3);                      
SOURCE  10 EXPRESSION_SYSTEM_CELLULAR_LOCATION: CYTOPLASM;            
SOURCE  11 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                    
SOURCE  12 EXPRESSION_SYSTEM_PLASMID: PET3;                           
SOURCE  13 OTHER_DETAILS: CDNA CLONE;                                 
SOURCE  14 MOL_ID: 3;                                                 
SOURCE  15 ORGANISM_SCIENTIFIC: HOMO SAPIENS;                         
SOURCE  16 ORGANISM_COMMON: HUMAN;                                    
SOURCE  17 EXPRESSION_SYSTEM: ESCHERICHIA COLI;                       
SOURCE  18 EXPRESSION_SYSTEM_STRAIN: BL21 (DE3);                      
SOURCE  19 EXPRESSION_SYSTEM_CELLULAR_LOCATION: CYTOPLASM;            
SOURCE  20 EXPRESSION_SYSTEM_VECTOR_TYPE: PLASMID;                    
SOURCE  21 EXPRESSION_SYSTEM_PLASMID: PET3;                           
SOURCE  22 OTHER_DETAILS: CDNA CLONE                                  
RESOLUTION  SOURCE               : ELETTRA                    
AUTHOR    S.R.PRICE,P.R.EVANS,K.NAGAI                                 
RESOLUTION     : MURSHUDOV,VAGIN,DODSON                       
EXPDTA    X-RAY DIFFRACTION                                           
JRNL        AUTH   S.R.PRICE,P.R.EVANS,K.NAGAI                        
JRNL        TITL   CRYSTAL STRUCTURE OF THE SPLICEOSOMAL U2B''-U2A'   
JRNL        TITL 2 PROTEIN COMPLEX BOUND TO A FRAGMENT OF U2 SMALL    
JRNL        TITL 3 NUCLEAR RNA                                        
JRNL        REF    NATURE                        V. 394   645 1998    
JRNL        REFN   ASTM NATUAS  UK ISSN 0028-0836                 0006
RESOLUTION   2.38 ANGSTROMS.                                  



 Sequence in PIR format: 
>P1;1a9nA
 structureX:1a9nA:   2 :A: 163 :A:u2 b'':homo sapiens: 9.99: 9.99
 VKLTAELIEQAAQYTNAVRDRELDLRGYKIPVIENLGATLDQFDAIDFSDNEIRKLDGFPLLRRLKTLLVNNNRI
 CRIGEGLDQALPDLTELILTNNSLVELGDLDPLASLKSLTYLCILRNPVTNKKHYRLYVIYKVPQVRVLDFQKVK
 LKERQEAEKMFK*




 View SSTRUC file for 1a9nA 
 Rasmol View of  1a9nA