Structural features of residue 21 in chain F

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Electrostatic Interactions:
HIS B 65 ND1	HIS F 21 ND1	0.765	INTER-CHAIN
HIS B 65 ND1	HIS F 21 NE2	1.700	INTER-CHAIN
HIS B 65 NE2	HIS F 21 ND1	0.682	INTER-CHAIN
HIS B 65 NE2	HIS F 21 NE2	1.529	INTER-CHAIN
ARG B 70 NH1	HIS F 21 NE2	2.595	INTER-CHAIN
ARG B 70 NH2	HIS F 21 NE2	2.372	INTER-CHAIN
HIS C 60 NE2	HIS F 21 ND1	0.697	INTER-CHAIN
ASP D 14 OD2	HIS F 21 ND1	-1.426	INTER-CHAIN
HIS D 60 NE2	HIS F 21 NE2	1.571	INTER-CHAIN
HIS E 65 ND1	HIS F 21 ND1	0.774	INTER-CHAIN
HIS E 65 NE2	HIS F 21 ND1	0.687	INTER-CHAIN
ASP F 10 OD1	HIS F 21 ND1	-1.843	INTRA-CHAIN
ASP F 10 OD2	HIS F 21 ND1	-1.905	INTRA-CHAIN
ASP F 14 OD1	HIS F 21 ND1	-1.479	INTRA-CHAIN
ASP F 14 OD2	HIS F 21 ND1	-1.575	INTRA-CHAIN
HIS F 21 ND1	ASP F 10 OD1	-1.843	INTRA-CHAIN
HIS F 21 ND1	ASP F 14 OD1	-1.479	INTRA-CHAIN
HIS F 21 ND1	ARG C 26 NH1	2.139	INTER-CHAIN
HIS F 21 ND1	HIS F 56 ND1	0.747	INTRA-CHAIN
HIS F 21 ND1	HIS F 56 NE2	1.958	INTRA-CHAIN
HIS F 21 ND1	HIS C 60 NE2	1.569	INTER-CHAIN
HIS F 21 ND1	HIS E 65 ND1	0.774	INTER-CHAIN
HIS F 21 ND1	HIS E 65 NE2	1.545	INTER-CHAIN
HIS F 21 ND1	HIS B 65 ND1	0.765	INTER-CHAIN
HIS F 21 ND1	HIS B 65 NE2	1.534	INTER-CHAIN
HIS F 21 ND1	ARG B 70 NH1	2.285	INTER-CHAIN
HIS F 21 NE2	ASP F 10 OD1	-1.577	INTRA-CHAIN
HIS F 21 NE2	ASP D 14 OD1	-1.464	INTER-CHAIN
HIS F 21 NE2	ASP F 14 OD1	-1.570	INTRA-CHAIN
HIS F 21 NE2	HIS F 56 ND1	0.829	INTRA-CHAIN
HIS F 21 NE2	HIS F 56 NE2	2.220	INTRA-CHAIN
HIS F 21 NE2	HIS D 60 NE2	1.571	INTER-CHAIN
HIS F 21 NE2	HIS B 65 ND1	0.756	INTER-CHAIN
HIS F 21 NE2	HIS B 65 NE2	1.529	INTER-CHAIN
HIS F 21 NE2	ARG B 70 NH1	2.595	INTER-CHAIN
HIS F 56 ND1	HIS F 21 ND1	0.747	INTRA-CHAIN
HIS F 56 ND1	HIS F 21 NE2	1.865	INTRA-CHAIN
HIS F 56 NE2	HIS F 21 ND1	0.870	INTRA-CHAIN
HIS F 56 NE2	HIS F 21 NE2	2.220	INTRA-CHAIN

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Van der Waal's Interactions:
SER F 9 OG 3485	HIS F 21 NE2 3606	-0.018	INTRA-CHAIN
TYR F 12 OH 3514	HIS F 21 NE2 3606	-0.642	INTRA-CHAIN
HIS F 21 NE2 3606	LEU B 68 CD2 1243	-0.527	INTER-CHAIN