Structural features of residue 21 in chain A

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Electrostatic Interactions:
ARG A 18 NH2	ARG A 21 NH1	3.110	INTRA-CHAIN
ARG A 18 NH2	ARG A 21 NH2	3.110	INTRA-CHAIN
ARG A 20 NH1	ARG A 21 NH1	10.873	INTRA-CHAIN
ARG A 20 NH1	ARG A 21 NH2	11.201	INTRA-CHAIN
ARG A 20 NH2	ARG A 21 NH1	11.672	INTRA-CHAIN
ARG A 20 NH2	ARG A 21 NH2	9.063	INTRA-CHAIN
ARG A 21 NH1	ARG A 18 NH2	3.110	INTRA-CHAIN
ARG A 21 NH1	ARG A 20 NH1	10.873	INTRA-CHAIN
ARG A 21 NH1	ARG A 20 NH2	11.672	INTRA-CHAIN
ARG A 21 NH1	ARG B 86 NH1	4.994	INTER-CHAIN
ARG A 21 NH1	ARG B 86 NH2	4.105	INTER-CHAIN
ARG A 21 NH1	ARG A 254 NH1	3.866	INTRA-CHAIN
ARG A 21 NH1	ARG A 254 NH2	4.690	INTRA-CHAIN
ARG A 21 NH2	ARG A 18 NH2	3.110	INTRA-CHAIN
ARG A 21 NH2	ARG A 20 NH1	11.201	INTRA-CHAIN
ARG A 21 NH2	ARG A 20 NH2	9.063	INTRA-CHAIN
ARG A 21 NH2	ARG B 86 NH1	5.247	INTER-CHAIN
ARG A 21 NH2	ARG B 86 NH2	4.389	INTER-CHAIN
ARG A 21 NH2	ARG A 254 NH1	3.451	INTRA-CHAIN
ARG A 21 NH2	ARG A 254 NH2	4.143	INTRA-CHAIN
ARG A 254 NH1	ARG A 21 NH1	3.866	INTRA-CHAIN
ARG A 254 NH1	ARG A 21 NH2	3.451	INTRA-CHAIN
ARG A 254 NH2	ARG A 21 NH1	4.690	INTRA-CHAIN
ARG A 254 NH2	ARG A 21 NH2	4.143	INTRA-CHAIN
ARG B 86 NH1	ARG A 21 NH1	4.994	INTER-CHAIN
ARG B 86 NH1	ARG A 21 NH2	5.247	INTER-CHAIN
ARG B 86 NH2	ARG A 21 NH1	4.105	INTER-CHAIN
ARG B 86 NH2	ARG A 21 NH2	4.389	INTER-CHAIN

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Protrusion Index:
ARG A 21 N	0.62
ARG A 21 CA	0.84
ARG A 21 C	0.75
ARG A 21 O	0.91
ARG A 21 CB	0.77
ARG A 21 CG	0.77
ARG A 21 CD	0.83
ARG A 21 NE	0.97
ARG A 21 CZ	0.77
ARG A 21 NH1	0.53
ARG A 21 NH2	0.95

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Salt bridges:
ARG A 20	ARG A 21	2.840	INTRA-CHAIN

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Van der Waal's Interactions:
ARG A 20 NH2 158	ARG A 21 NH2 169	-0.064	INTRA-CHAIN
ARG A 21 NH2 169	ALA B 85 CB 649	-0.010	INTER-CHAIN
ARG A 21 NH2 169	GLY B 87 O 664	-0.030	INTER-CHAIN