Structural features of residue 90 in chain B
D1	HIS B 90 ND1	-1.741	INTER-CHAIN
ASP A 14 OD2	HIS B 90 ND1	-1.498	INTER-CHAIN
HIS A 17 ND1	HIS B 90 ND1	1.127	INTER-CHAIN
HIS A 17 ND1	HIS B 90 NE2	3.125	INTER-CHAIN
HIS A 17 NE2	HIS B 90 ND1	1.293	INTER-CHAIN
HIS A 17 NE2	HIS B 90 NE2	3.903	INTER-CHAIN
ARG A 22 NH1	HIS B 90 NE2	2.242	INTER-CHAIN
ARG A 22 NH2	HIS B 90 NE2	2.216	INTER-CHAIN
ASP A 23 OD1	HIS B 90 ND1	-1.803	INTER-CHAIN
ASP A 23 OD2	HIS B 90 ND1	-1.590	INTER-CHAIN
ASP A 24 OD1	HIS B 90 ND1	-3.997	INTER-CHAIN
ASP A 24 OD2	HIS B 90 ND1	-5.166	INTER-CHAIN
ASP B 84 OD1	HIS B 90 ND1	-1.762	INTRA-CHAIN
ASP B 84 OD2	HIS B 90 ND1	-1.765	INTRA-CHAIN
HIS B 86 ND1	HIS B 90 ND1	2.226	INTRA-CHAIN
HIS B 86 ND1	HIS B 90 NE2	3.822	INTRA-CHAIN
HIS B 86 NE2	HIS B 90 ND1	2.577	INTRA-CHAIN
HIS B 86 NE2	HIS B 90 NE2	5.005	INTRA-CHAIN
HIS B 90 ND1	ASP A 14 OD1	-1.741	INTER-CHAIN
HIS B 90 ND1	HIS A 17 ND1	1.127	INTER-CHAIN
HIS B 90 ND1	HIS A 17 NE2	2.910	INTER-CHAIN
HIS B 90 ND1	ASP A 23 OD1	-1.803	INTER-CHAIN
HIS B 90 ND1	ASP A 24 OD1	-3.997	INTER-CHAIN
HIS B 90 ND1	ASP B 84 OD1	-1.762	INTRA-CHAIN
HIS B 90 ND1	HIS B 86 ND1	2.226	INTRA-CHAIN
HIS B 90 ND1	HIS B 86 NE2	5.799	INTRA-CHAIN
HIS B 90 NE2	ASP A 14 OD1	-1.908	INTER-CHAIN
HIS B 90 NE2	HIS A 17 ND1	1.389	INTER-CHAIN
HIS B 90 NE2	HIS A 17 NE2	3.903	INTER-CHAIN
HIS B 90 NE2	ARG A 22 NH1	2.242	INTER-CHAIN
HIS B 90 NE2	ASP A 23 OD1	-2.032	INTER-CHAIN
HIS B 90 NE2	ASP A 24 OD1	-5.361	INTER-CHAIN
HIS B 90 NE2	ASP B 84 OD1	-1.493	INTRA-CHAIN
HIS B 90 NE2	HIS B 86 ND1	1.698	INTRA-CHAIN
HIS B 90 NE2	HIS B 86 NE2	5.005	INTRA-CHAIN

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Protrusion Index:
HIS B 90 N	1.27
HIS B 90 CA	1.78
HIS B 90 C	1.94
HIS B 90 O	2.47
HIS B 90 CB	1.57
HIS B 90 CG	1.15
HIS B 90 ND1	0.81
HIS B 90 CD2	1.22
HIS B 90 CE1	0.68
HIS B 90 NE2	0.84

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Van der Waal's Interactions:
HIS A 17 NE2 138	HIS B 90 NE2 1593	-0.024	INTER-CHAIN
ASP A 24 OD2 214	HIS B 90 NE2 1593	-0.388	INTER-CHAIN
HIS B 86 NE2 1559	HIS B 90 NE2 1593	-0.105	INTRA-CHAIN