Structural features of residue 401 in chain B
D1	HIS B 401 ND1	0.771	INTER-CHAIN
HIS A 147 ND1	HIS B 401 NE2	1.748	INTER-CHAIN
HIS A 147 NE2	HIS B 401 ND1	0.761	INTER-CHAIN
HIS A 147 NE2	HIS B 401 NE2	1.770	INTER-CHAIN
ARG A 152 NH1	HIS B 401 NE2	2.781	INTER-CHAIN
ARG A 152 NH2	HIS B 401 NE2	2.708	INTER-CHAIN
ARG A 296 NH1	HIS B 401 NE2	6.693	INTER-CHAIN
ARG A 296 NH2	HIS B 401 NE2	5.685	INTER-CHAIN
ASP A 299 OD1	HIS B 401 ND1	-1.437	INTER-CHAIN
ASP A 299 OD2	HIS B 401 ND1	-1.592	INTER-CHAIN
HIS B 147 ND1	HIS B 401 ND1	0.672	INTRA-CHAIN
ASP B 397 OD1	HIS B 401 ND1	-2.405	INTRA-CHAIN
ASP B 397 OD2	HIS B 401 ND1	-2.639	INTRA-CHAIN
ARG B 400 NH1	HIS B 401 NE2	5.871	INTRA-CHAIN
ARG B 400 NH2	HIS B 401 NE2	7.391	INTRA-CHAIN
HIS B 401 ND1	HIS A 147 ND1	0.771	INTER-CHAIN
HIS B 401 ND1	HIS A 147 NE2	1.712	INTER-CHAIN
HIS B 401 ND1	HIS B 147 ND1	0.672	INTRA-CHAIN
HIS B 401 ND1	ARG A 152 NH1	2.515	INTER-CHAIN
HIS B 401 ND1	ARG A 296 NH1	4.834	INTER-CHAIN
HIS B 401 ND1	ASP A 299 OD1	-1.437	INTER-CHAIN
HIS B 401 ND1	ASP B 397 OD1	-2.405	INTRA-CHAIN
HIS B 401 ND1	ARG B 400 NH1	5.009	INTRA-CHAIN
HIS B 401 NE2	HIS A 147 ND1	0.777	INTER-CHAIN
HIS B 401 NE2	HIS A 147 NE2	1.770	INTER-CHAIN
HIS B 401 NE2	ARG A 152 NH1	2.781	INTER-CHAIN
HIS B 401 NE2	ARG A 296 NH1	6.693	INTER-CHAIN
HIS B 401 NE2	ASP A 299 OD1	-1.671	INTER-CHAIN
HIS B 401 NE2	ASP B 397 OD1	-2.129	INTRA-CHAIN
HIS B 401 NE2	ARG B 400 NH1	5.871	INTRA-CHAIN

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Protrusion Index:
HIS B 401 N	0.83
HIS B 401 CA	1.11
HIS B 401 C	1.02
HIS B 401 O	1.17
HIS B 401 CB	0.77
HIS B 401 CG	0.83
HIS B 401 ND1	0.68
HIS B 401 CD2	0.97
HIS B 401 CE1	0.64
HIS B 401 NE2	0.81

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Salt bridges:
ARG B 400	HIS B 401	2.684	INTRA-CHAIN

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Van der Waal's Interactions:
TYR A 149 OH 1087	HIS B 401 NE2 6384	-0.008	INTER-CHAIN
THR A 295 CG2 2277	HIS B 401 NE2 6384	-0.019	INTER-CHAIN
ARG A 296 NH2 2288	HIS B 401 NE2 6384	-0.030	INTER-CHAIN
ARG B 400 NH2 6374	HIS B 401 NE2 6384	-0.142	INTRA-CHAIN