Structural features of residue 21 in chain B

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Electrostatic Interactions:
ARG A 17 NH2	ARG B 21 NH1	3.168	INTER-CHAIN
HIS A 106 ND1	ARG B 21 NH1	2.217	INTER-CHAIN
HIS A 106 NE2	ARG B 21 NH1	2.405	INTER-CHAIN
ARG A 284 NH1	ARG B 21 NH1	3.166	INTER-CHAIN
ARG A 284 NH1	ARG B 21 NH2	3.730	INTER-CHAIN
ARG A 284 NH2	ARG B 21 NH1	3.140	INTER-CHAIN
ARG A 284 NH2	ARG B 21 NH2	3.724	INTER-CHAIN
ARG B 17 NH1	ARG B 21 NH1	6.969	INTRA-CHAIN
ARG B 17 NH1	ARG B 21 NH2	8.380	INTRA-CHAIN
ARG B 17 NH2	ARG B 21 NH1	6.276	INTRA-CHAIN
ARG B 17 NH2	ARG B 21 NH2	8.109	INTRA-CHAIN
ARG B 21 NH1	ARG B 17 NH1	6.969	INTRA-CHAIN
ARG B 21 NH1	ARG B 17 NH2	6.276	INTRA-CHAIN
ARG B 21 NH1	ARG A 17 NH2	3.168	INTER-CHAIN
ARG B 21 NH1	HIS B 26 NE2	2.740	INTRA-CHAIN
ARG B 21 NH1	HIS B 70 NE2	2.836	INTRA-CHAIN
ARG B 21 NH1	HIS A 106 NE2	2.405	INTER-CHAIN
ARG B 21 NH1	ARG A 284 NH1	3.166	INTER-CHAIN
ARG B 21 NH1	ARG A 284 NH2	3.140	INTER-CHAIN
ARG B 21 NH2	ARG B 17 NH1	8.380	INTRA-CHAIN
ARG B 21 NH2	ARG B 17 NH2	8.109	INTRA-CHAIN
ARG B 21 NH2	HIS B 26 NE2	2.899	INTRA-CHAIN
ARG B 21 NH2	HIS B 70 NE2	3.035	INTRA-CHAIN
ARG B 21 NH2	HIS A 106 NE2	2.336	INTER-CHAIN
ARG B 21 NH2	ARG A 284 NH1	3.730	INTER-CHAIN
ARG B 21 NH2	ARG A 284 NH2	3.724	INTER-CHAIN
HIS B 26 ND1	ARG B 21 NH1	2.540	INTRA-CHAIN
HIS B 26 NE2	ARG B 21 NH1	2.740	INTRA-CHAIN
HIS B 70 ND1	ARG B 21 NH1	2.434	INTRA-CHAIN
HIS B 70 NE2	ARG B 21 NH1	2.836	INTRA-CHAIN

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Protrusion Index:
ARG B 21 N	0.43
ARG B 21 CA	0.45
ARG B 21 C	0.31
ARG B 21 O	0.20
ARG B 21 CB	0.56
ARG B 21 CG	0.67
ARG B 21 CD	0.75
ARG B 21 NE	0.72
ARG B 21 CZ	1.00
ARG B 21 NH1	1.51
ARG B 21 NH2	1.08

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Salt bridges:
ARG B 21	GLU A 294	3.026	INTER-CHAIN

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Van der Waal's Interactions:
ARG B 17 NH2 2677	ARG B 21 NH2 2711	-0.033	INTRA-CHAIN
ARG B 21 NH2 2711	GLU A 294 OE2 2188	-0.112	INTER-CHAIN