Structural features of residue 253 in chain B
D1	HIS B 253 ND1	0.919	INTER-CHAIN
HIS A 146 ND1	HIS B 253 NE2	1.879	INTER-CHAIN
HIS A 146 NE2	HIS B 253 ND1	0.872	INTER-CHAIN
HIS A 146 NE2	HIS B 253 NE2	1.765	INTER-CHAIN
ARG A 185 NH1	HIS B 253 NE2	2.451	INTER-CHAIN
HIS A 209 ND1	HIS B 253 ND1	2.019	INTER-CHAIN
HIS A 209 ND1	HIS B 253 NE2	4.306	INTER-CHAIN
HIS A 209 NE2	HIS B 253 ND1	1.710	INTER-CHAIN
HIS A 209 NE2	HIS B 253 NE2	3.443	INTER-CHAIN
ASP A 237 OD1	HIS B 253 ND1	-2.132	INTER-CHAIN
ASP A 237 OD2	HIS B 253 ND1	-2.317	INTER-CHAIN
HIS B 249 ND1	HIS B 253 ND1	0.698	INTRA-CHAIN
HIS B 249 ND1	HIS B 253 NE2	1.631	INTRA-CHAIN
ASP B 251 OD1	HIS B 253 ND1	-5.284	INTRA-CHAIN
ASP B 251 OD2	HIS B 253 ND1	-3.516	INTRA-CHAIN
HIS B 253 ND1	HIS A 146 ND1	0.919	INTER-CHAIN
HIS B 253 ND1	HIS A 146 NE2	1.962	INTER-CHAIN
HIS B 253 ND1	ARG A 185 NH1	2.159	INTER-CHAIN
HIS B 253 ND1	HIS A 209 ND1	2.019	INTER-CHAIN
HIS B 253 ND1	HIS A 209 NE2	3.848	INTER-CHAIN
HIS B 253 ND1	ASP A 237 OD1	-2.132	INTER-CHAIN
HIS B 253 ND1	HIS B 249 ND1	0.698	INTRA-CHAIN
HIS B 253 ND1	ASP B 251 OD1	-5.284	INTRA-CHAIN
HIS B 253 NE2	HIS A 146 ND1	0.835	INTER-CHAIN
HIS B 253 NE2	HIS A 146 NE2	1.765	INTER-CHAIN
HIS B 253 NE2	ARG A 185 NH1	2.451	INTER-CHAIN
HIS B 253 NE2	HIS A 209 ND1	1.914	INTER-CHAIN
HIS B 253 NE2	HIS A 209 NE2	3.443	INTER-CHAIN
HIS B 253 NE2	ASP A 237 OD1	-2.709	INTER-CHAIN
HIS B 253 NE2	HIS B 249 ND1	0.725	INTRA-CHAIN
HIS B 253 NE2	ASP B 251 OD1	-3.850	INTRA-CHAIN

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Protrusion Index:
HIS B 253 N	0.72
HIS B 253 CA	0.91
HIS B 253 C	0.97
HIS B 253 O	1.29
HIS B 253 CB	0.97
HIS B 253 CG	1.11
HIS B 253 ND1	1.54
HIS B 253 CD2	0.88
HIS B 253 CE1	1.48
HIS B 253 NE2	1.04

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Salt bridges:
ASP B 251	HIS B 253	2.850	INTRA-CHAIN

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Van der Waal's Interactions:
HIS A 209 NE2 1656	HIS B 253 NE2 4087	-0.011	INTER-CHAIN
PRO A 210 CD 1663	HIS B 253 NE2 4087	-0.047	INTER-CHAIN
ASP A 237 OD2 1872	HIS B 253 NE2 4087	-0.009	INTER-CHAIN
LEU A 238 CD2 1880	HIS B 253 NE2 4087	-0.011	INTER-CHAIN
ASP B 251 OD2 4071	HIS B 253 NE2 4087	-0.008	INTRA-CHAIN