Structural features of residue 503 in chain F

********************************* Electrostatic Interactions: HIS B 35 ND1 ARG F 503 NH1 2.331 INTER-CHAIN HIS B 35 NE2 ARG F 503 NH1 2.481 INTER-CHAIN HIS E 519 NE2 ARG F 503 NH1 2.160 INTER-CHAIN HIS F 474 ND1 ARG F 503 NH1 2.174 INTRA-CHAIN ARG F 475 NH1 ARG F 503 NH1 4.929 INTRA-CHAIN ARG F 475 NH1 ARG F 503 NH2 4.878 INTRA-CHAIN ARG F 475 NH2 ARG F 503 NH1 4.734 INTRA-CHAIN ARG F 475 NH2 ARG F 503 NH2 4.536 INTRA-CHAIN HIS F 502 ND1 ARG F 503 NH1 2.676 INTRA-CHAIN HIS F 502 NE2 ARG F 503 NH1 2.370 INTRA-CHAIN ARG F 503 NH1 HIS B 35 NE2 2.481 INTER-CHAIN ARG F 503 NH1 ARG F 475 NH1 4.929 INTRA-CHAIN ARG F 503 NH1 ARG F 475 NH2 4.734 INTRA-CHAIN ARG F 503 NH1 HIS F 502 NE2 2.370 INTRA-CHAIN ARG F 503 NH1 HIS E 519 NE2 2.160 INTER-CHAIN ARG F 503 NH1 HIS F 531 NE2 2.404 INTRA-CHAIN ARG F 503 NH2 HIS B 35 NE2 2.401 INTER-CHAIN ARG F 503 NH2 ARG F 475 NH1 4.878 INTRA-CHAIN ARG F 503 NH2 ARG F 475 NH2 4.536 INTRA-CHAIN ARG F 503 NH2 HIS F 502 NE2 2.300 INTRA-CHAIN ARG F 503 NH2 HIS F 531 NE2 2.465 INTRA-CHAIN HIS F 531 ND1 ARG F 503 NH1 2.177 INTRA-CHAIN HIS F 531 NE2 ARG F 503 NH1 2.404 INTRA-CHAIN ********************************* Salt bridges: ASP B 30 ARG F 503 2.525 INTER-CHAIN ********************************* Van der Waal's Interactions: ASP B 30 OD2 1939 ARG F 503 NH2 6657 -0.112 INTER-CHAIN SER B 31 OG 1945 ARG F 503 NH2 6657 -0.144 INTER-CHAIN SER B 32 OG 1951 ARG F 503 NH2 6657 -0.009 INTER-CHAIN TYR F 443 OH 6162 ARG F 503 NH2 6657 -0.111 INTRA-CHAIN LYS F 447 NZ 6195 ARG F 503 NH2 6657 -1.040 INTRA-CHAIN ARG F 503 NH2 6657 ILE F 504 CD1 6665 -0.022 INTRA-CHAIN ARG F 503 NH2 6657 ILE F 507 CD1 6688 -0.567 INTRA-CHAIN