Structural features of residue 18 in chain A

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Electrostatic Interactions:
HIS A 18 ND1	ARG B 52 NH1	4.214	INTER-CHAIN
HIS A 18 ND1	ARG B 57 NH1	2.481	INTER-CHAIN
HIS A 18 ND1	ARG A 57 NH1	2.249	INTRA-CHAIN
HIS A 18 ND1	ASP B 127 OD1	-7.090	INTER-CHAIN
HIS A 18 ND1	ARG B 137 NH1	2.323	INTER-CHAIN
HIS A 18 NE2	ARG B 52 NH1	5.305	INTER-CHAIN
HIS A 18 NE2	ARG B 57 NH1	2.396	INTER-CHAIN
HIS A 18 NE2	ARG A 57 NH1	2.543	INTRA-CHAIN
HIS A 18 NE2	ASP B 127 OD1	-4.184	INTER-CHAIN
HIS A 18 NE2	ARG B 137 NH1	2.315	INTER-CHAIN
ARG A 57 NH1	HIS A 18 NE2	2.543	INTRA-CHAIN
ARG A 57 NH2	HIS A 18 NE2	2.505	INTRA-CHAIN
ARG B 52 NH1	HIS A 18 NE2	5.305	INTER-CHAIN
ARG B 52 NH2	HIS A 18 NE2	4.900	INTER-CHAIN
ARG B 57 NH1	HIS A 18 NE2	2.396	INTER-CHAIN
ARG B 57 NH2	HIS A 18 NE2	2.386	INTER-CHAIN
ASP B 127 OD1	HIS A 18 ND1	-7.090	INTER-CHAIN
ASP B 127 OD2	HIS A 18 ND1	-5.725	INTER-CHAIN
ARG B 137 NH1	HIS A 18 NE2	2.315	INTER-CHAIN

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Protrusion Index:
HIS A 18 N	1.11
HIS A 18 CA	0.91
HIS A 18 C	1.08
HIS A 18 O	1.29
HIS A 18 CB	0.89
HIS A 18 CG	0.88
HIS A 18 ND1	0.93
HIS A 18 CD2	0.83
HIS A 18 CE1	1.02
HIS A 18 NE2	0.84

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Salt bridges:
HIS A 18	ASP B 127	2.829	INTER-CHAIN

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Van der Waal's Interactions:
HIS A 18 NE2 163	ARG B 52 NH2 2685	-0.012	INTER-CHAIN
HIS A 18 NE2 163	ASP B 127 OD2 3240	-0.030	INTER-CHAIN
GLU B 17 CB 2442	HIS A 18 NE2 163	-0.015	INTER-CHAIN