Structural features of residue 21 in chain A

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Electrostatic Interactions:
ARG A 21 NH1	ARG A 35 NH1	3.460	INTRA-CHAIN
ARG A 21 NH1	ARG A 35 NH2	3.063	INTRA-CHAIN
ARG A 21 NH1	ARG A 50 NH1	3.192	INTRA-CHAIN
ARG A 21 NH1	HIS A 58 NE2	3.495	INTRA-CHAIN
ARG A 21 NH1	ARG A 140 NH2	3.324	INTRA-CHAIN
ARG A 21 NH2	ARG A 35 NH1	3.508	INTRA-CHAIN
ARG A 21 NH2	ARG A 35 NH2	3.130	INTRA-CHAIN
ARG A 21 NH2	ARG A 37 NH1	3.029	INTRA-CHAIN
ARG A 21 NH2	HIS A 38 NE2	2.134	INTRA-CHAIN
ARG A 21 NH2	ARG A 50 NH1	3.112	INTRA-CHAIN
ARG A 21 NH2	HIS A 58 NE2	3.058	INTRA-CHAIN
ARG A 21 NH2	ARG A 140 NH2	3.292	INTRA-CHAIN
ARG A 35 NH1	ARG A 21 NH1	3.460	INTRA-CHAIN
ARG A 35 NH1	ARG A 21 NH2	3.508	INTRA-CHAIN
ARG A 35 NH2	ARG A 21 NH1	3.063	INTRA-CHAIN
ARG A 35 NH2	ARG A 21 NH2	3.130	INTRA-CHAIN
ARG A 37 NH1	ARG A 21 NH2	3.029	INTRA-CHAIN
ARG A 50 NH1	ARG A 21 NH1	3.192	INTRA-CHAIN
ARG A 50 NH1	ARG A 21 NH2	3.112	INTRA-CHAIN
HIS A 58 ND1	ARG A 21 NH1	2.952	INTRA-CHAIN
HIS A 58 NE2	ARG A 21 NH1	3.495	INTRA-CHAIN
ARG A 140 NH2	ARG A 21 NH1	3.324	INTRA-CHAIN
ARG A 140 NH2	ARG A 21 NH2	3.292	INTRA-CHAIN

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Protrusion Index:
ARG A 21 N	0.81
ARG A 21 CA	0.58
ARG A 21 C	0.86
ARG A 21 O	1.19
ARG A 21 CB	0.60
ARG A 21 CG	0.56
ARG A 21 CD	0.59
ARG A 21 NE	0.68
ARG A 21 CZ	0.68
ARG A 21 NH1	0.59
ARG A 21 NH2	0.75

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Van der Waal's Interactions:
ILE A 18 CD1 141	ARG A 21 NH2 165	-0.359	INTRA-CHAIN
ARG A 21 NH2 165	TYR A 34 OH 280	-0.063	INTRA-CHAIN
ARG A 21 NH2 165	GLU A 55 OE2 473	-0.011	INTRA-CHAIN
ARG A 21 NH2 165	TYR B 83 OH 2254	-0.017	INTER-CHAIN
ARG A 21 NH2 165	ASP B 84 OD2 2262	-1.241	INTER-CHAIN