Structural features of residue 40 in chain A

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Electrostatic Interactions:
HIS A 40 ND1	ARG A 50 NH1	2.391	INTRA-CHAIN
HIS A 40 ND1	ASP B 126 OD1	-1.595	INTER-CHAIN
HIS A 40 ND1	ARG A 173 NH1	3.317	INTRA-CHAIN
HIS A 40 ND1	ARG A 179 NH1	3.186	INTRA-CHAIN
HIS A 40 ND1	ARG A 282 NH1	2.260	INTRA-CHAIN
HIS A 40 ND1	HIS A 289 ND1	0.695	INTRA-CHAIN
HIS A 40 ND1	HIS A 289 NE2	1.695	INTRA-CHAIN
HIS A 40 NE2	ASP B 126 OD1	-1.774	INTER-CHAIN
HIS A 40 NE2	ARG A 173 NH1	4.121	INTRA-CHAIN
HIS A 40 NE2	ARG A 179 NH1	4.031	INTRA-CHAIN
HIS A 40 NE2	ARG A 199 NH1	2.125	INTRA-CHAIN
HIS A 40 NE2	ARG A 282 NH1	2.140	INTRA-CHAIN
HIS A 40 NE2	HIS A 289 ND1	0.748	INTRA-CHAIN
HIS A 40 NE2	HIS A 289 NE2	1.872	INTRA-CHAIN
ARG A 50 NH2	HIS A 40 NE2	2.317	INTRA-CHAIN
ARG A 173 NH1	HIS A 40 NE2	4.121	INTRA-CHAIN
ARG A 173 NH2	HIS A 40 NE2	3.597	INTRA-CHAIN
ARG A 179 NH1	HIS A 40 NE2	4.031	INTRA-CHAIN
ARG A 179 NH2	HIS A 40 NE2	3.400	INTRA-CHAIN
ARG A 199 NH1	HIS A 40 NE2	2.125	INTRA-CHAIN
ARG A 199 NH2	HIS A 40 NE2	2.118	INTRA-CHAIN
ARG A 282 NH1	HIS A 40 NE2	2.140	INTRA-CHAIN
ARG A 282 NH2	HIS A 40 NE2	2.443	INTRA-CHAIN
HIS A 289 ND1	HIS A 40 ND1	0.695	INTRA-CHAIN
HIS A 289 ND1	HIS A 40 NE2	1.682	INTRA-CHAIN
HIS A 289 NE2	HIS A 40 ND1	0.753	INTRA-CHAIN
HIS A 289 NE2	HIS A 40 NE2	1.872	INTRA-CHAIN
ARG B 121 NH2	HIS A 40 NE2	2.192	INTER-CHAIN
ASP B 126 OD1	HIS A 40 ND1	-1.595	INTER-CHAIN
ASP B 126 OD2	HIS A 40 ND1	-1.565	INTER-CHAIN

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Salt bridges:
GLU A 39	HIS A 40	2.249	INTRA-CHAIN

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Van der Waal's Interactions:
SER A 38 OG 232	HIS A 40 NE2 251	-0.030	INTRA-CHAIN
GLU A 39 OE2 241	HIS A 40 NE2 251	-0.007	INTRA-CHAIN
HIS A 40 NE2 251	LYS A 43 NZ 281	-0.012	INTRA-CHAIN
HIS A 40 NE2 251	ALA A 175 CB 1354	-0.009	INTRA-CHAIN