Structural features of residue 57 in chain A

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Electrostatic Interactions:
ARG A 23 NH1	HIS A 57 NE2	4.304	INTRA-CHAIN
ARG A 23 NH2	HIS A 57 NE2	3.320	INTRA-CHAIN
ARG A 27 NH1	HIS A 57 NE2	5.454	INTRA-CHAIN
ARG A 27 NH2	HIS A 57 NE2	4.463	INTRA-CHAIN
ASP A 51 OD1	HIS A 57 ND1	-1.463	INTRA-CHAIN
ASP A 51 OD2	HIS A 57 ND1	-1.422	INTRA-CHAIN
ARG A 55 NH1	HIS A 57 NE2	2.639	INTRA-CHAIN
ARG A 55 NH2	HIS A 57 NE2	2.772	INTRA-CHAIN
ARG A 56 NH1	HIS A 57 NE2	3.353	INTRA-CHAIN
ARG A 56 NH2	HIS A 57 NE2	3.654	INTRA-CHAIN
HIS A 57 ND1	ARG A 23 NH1	3.864	INTRA-CHAIN
HIS A 57 ND1	ARG A 27 NH1	6.924	INTRA-CHAIN
HIS A 57 ND1	ASP A 51 OD1	-1.463	INTRA-CHAIN
HIS A 57 ND1	ARG A 55 NH1	2.588	INTRA-CHAIN
HIS A 57 ND1	ARG A 56 NH1	3.582	INTRA-CHAIN
HIS A 57 NE2	ARG A 23 NH1	4.304	INTRA-CHAIN
HIS A 57 NE2	ARG A 27 NH1	5.454	INTRA-CHAIN
HIS A 57 NE2	ASP A 51 OD1	-1.587	INTRA-CHAIN
HIS A 57 NE2	ARG A 55 NH1	2.639	INTRA-CHAIN
HIS A 57 NE2	ARG A 56 NH1	3.353	INTRA-CHAIN

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Protrusion Index:
HIS A 57 N	0.41
HIS A 57 CA	0.29
HIS A 57 O	0.20
HIS A 57 CB	0.19
HIS A 57 CG	0.15
HIS A 57 ND1	0.20
HIS A 57 CD2	0.12
HIS A 57 CE1	0.15
HIS A 57 NE2	0.07

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Salt bridges:
ARG A 56	HIS A 57	2.893	INTRA-CHAIN

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Van der Waal's Interactions:
SER A 41 OG 292	HIS A 57 NE2 410	-0.062	INTRA-CHAIN
SER A 45 OG 316	HIS A 57 NE2 410	-0.164	INTRA-CHAIN
HIS A 57 NE2 410	GLU A 60 OE2 433	-0.039	INTRA-CHAIN
HIS A 57 NE2 410	LEU C 80 CD2 1921	-0.013	INTER-CHAIN
HIS A 57 NE2 410	ILE C 81 CD1 1929	-0.180	INTER-CHAIN