Structural features of residue 54 in chain A

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Electrostatic Interactions:
HIS A 54 ND1	ASP B 239 OD1	-1.364	INTER-CHAIN
HIS A 54 ND1	ARG B 246 NH1	2.227	INTER-CHAIN
HIS A 54 ND1	HIS B 254 ND1	0.789	INTER-CHAIN
HIS A 54 ND1	HIS B 254 NE2	1.594	INTER-CHAIN
HIS A 54 ND1	ARG B 339 NH1	5.916	INTER-CHAIN
HIS A 54 NE2	ARG B 246 NH1	2.216	INTER-CHAIN
HIS A 54 NE2	HIS B 254 ND1	0.906	INTER-CHAIN
HIS A 54 NE2	HIS B 254 NE2	1.795	INTER-CHAIN
HIS A 54 NE2	ASP B 255 OD1	-1.485	INTER-CHAIN
HIS A 54 NE2	ARG B 339 NH1	4.326	INTER-CHAIN
ASP B 239 OD1	HIS A 54 ND1	-1.364	INTER-CHAIN
ARG B 246 NH1	HIS A 54 NE2	2.216	INTER-CHAIN
ARG B 246 NH2	HIS A 54 NE2	2.171	INTER-CHAIN
HIS B 254 ND1	HIS A 54 ND1	0.789	INTER-CHAIN
HIS B 254 ND1	HIS A 54 NE2	2.039	INTER-CHAIN
HIS B 254 NE2	HIS A 54 ND1	0.708	INTER-CHAIN
HIS B 254 NE2	HIS A 54 NE2	1.795	INTER-CHAIN
ARG B 339 NH1	HIS A 54 NE2	4.326	INTER-CHAIN
ARG B 339 NH2	HIS A 54 NE2	3.510	INTER-CHAIN

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Protrusion Index:
HIS A 54 N	0.34
HIS A 54 CA	0.39
HIS A 54 C	0.36
HIS A 54 O	0.38
HIS A 54 CB	0.63
HIS A 54 CG	0.80
HIS A 54 ND1	0.84
HIS A 54 CD2	0.83
HIS A 54 CE1	1.06
HIS A 54 NE2	1.00