Structural features of residue 20 in chain A

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Electrostatic Interactions:
ARG A 20 NH1	ARG A 25 NH1	3.123	INTRA-CHAIN
ARG A 20 NH1	HIS A 28 NE2	2.580	INTRA-CHAIN
ARG A 20 NH1	ARG A 67 NH1	3.691	INTRA-CHAIN
ARG A 20 NH1	ARG A 67 NH2	3.805	INTRA-CHAIN
ARG A 20 NH2	ARG A 25 NH1	3.299	INTRA-CHAIN
ARG A 20 NH2	ARG A 25 NH2	3.006	INTRA-CHAIN
ARG A 20 NH2	HIS A 28 NE2	2.389	INTRA-CHAIN
ARG A 20 NH2	ARG A 67 NH1	3.876	INTRA-CHAIN
ARG A 20 NH2	ARG A 67 NH2	3.918	INTRA-CHAIN
ARG A 25 NH1	ARG A 20 NH1	3.123	INTRA-CHAIN
ARG A 25 NH1	ARG A 20 NH2	3.299	INTRA-CHAIN
ARG A 25 NH2	ARG A 20 NH2	3.006	INTRA-CHAIN
HIS A 28 ND1	ARG A 20 NH1	2.371	INTRA-CHAIN
HIS A 28 NE2	ARG A 20 NH1	2.580	INTRA-CHAIN
ARG A 67 NH1	ARG A 20 NH1	3.691	INTRA-CHAIN
ARG A 67 NH1	ARG A 20 NH2	3.876	INTRA-CHAIN
ARG A 67 NH2	ARG A 20 NH1	3.805	INTRA-CHAIN
ARG A 67 NH2	ARG A 20 NH2	3.918	INTRA-CHAIN

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Protrusion Index:
ARG A 20 N	0.88
ARG A 20 CA	0.75
ARG A 20 C	0.58
ARG A 20 O	0.56
ARG A 20 CB	0.69
ARG A 20 CG	0.63
ARG A 20 CD	0.74
ARG A 20 NE	0.62
ARG A 20 CZ	0.81
ARG A 20 NH1	1.11
ARG A 20 NH2	0.67

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Salt bridges:
ARG A 20	ASP B 428	3.038	INTER-CHAIN

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Van der Waal's Interactions:
GLU A 17 OE2 123	ARG A 20 NH2 148	-0.302	INTRA-CHAIN
ARG A 20 NH2 148	ILE A 21 CD1 156	-0.008	INTRA-CHAIN
ARG A 20 NH2 148	TYR B 42 OH 319	-0.010	INTER-CHAIN
ARG A 20 NH2 148	SER B 426 OG 3258	-0.010	INTER-CHAIN
ARG A 20 NH2 148	THR B 427 CG2 3265	-0.582	INTER-CHAIN
ARG A 20 NH2 148	ASP B 428 OD2 3273	-0.328	INTER-CHAIN
ARG A 20 NH2 148	ILE B 431 CD1 3293	-0.148	INTER-CHAIN