Structural features of residue 21 in chain A

********************************* Hydrophobic Interactions: ALA A 20 ALA A 21 Dist=5.408 INTRA-CHAIN ALA A 21 LEU A 150 Dist=6.704 INTRA-CHAIN ALA A 21 TYR A 151 Dist=5.346 INTRA-CHAIN ********************************* Protrusion Index: ALA A 21 N 0.04 ALA A 21 CA 0.05 ALA A 21 C 0.07 ALA A 21 O 0.06 ALA A 21 CB 0.13 ********************************* Van der Waal's Interactions: HIS A 19 NE2 104 ALA A 21 CB 114 -0.017 INTRA-CHAIN ALA A 20 CB 109 ALA A 21 CB 114 -0.042 INTRA-CHAIN ALA A 21 CB 114 GLY A 22 O 118 -0.314 INTRA-CHAIN ALA A 21 CB 114 VAL A 23 CG2 125 -0.019 INTRA-CHAIN ALA A 21 CB 114 THR A 40 CG2 252 -0.194 INTRA-CHAIN HIS B 19 NE2 104 ALA A 21 CB 114 -0.008 INTER-CHAIN