Structural features of residue 21 in chain A

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Electrostatic Interactions:
ARG A 21 NH1	HIS A 44 NE2	2.191	INTRA-CHAIN
ARG A 21 NH1	HIS A 54 NE2	6.311	INTRA-CHAIN
ARG A 21 NH1	ARG B 101 NH1	3.303	INTER-CHAIN
ARG A 21 NH1	ARG B 101 NH2	2.979	INTER-CHAIN
ARG A 21 NH2	HIS A 44 NE2	2.157	INTRA-CHAIN
ARG A 21 NH2	HIS A 54 NE2	9.429	INTRA-CHAIN
ARG A 21 NH2	ARG B 89 NH1	3.064	INTER-CHAIN
ARG A 21 NH2	ARG B 101 NH1	3.379	INTER-CHAIN
ARG A 21 NH2	ARG B 101 NH2	3.024	INTER-CHAIN
HIS A 44 ND1	ARG A 21 NH1	2.203	INTRA-CHAIN
HIS A 44 NE2	ARG A 21 NH1	2.191	INTRA-CHAIN
HIS A 54 ND1	ARG A 21 NH1	4.566	INTRA-CHAIN
HIS A 54 NE2	ARG A 21 NH1	6.311	INTRA-CHAIN
ARG B 89 NH1	ARG A 21 NH2	3.064	INTER-CHAIN
HIS B 92 ND1	ARG A 21 NH1	2.258	INTER-CHAIN
ARG B 101 NH1	ARG A 21 NH1	3.303	INTER-CHAIN
ARG B 101 NH1	ARG A 21 NH2	3.379	INTER-CHAIN
ARG B 101 NH2	ARG A 21 NH1	2.979	INTER-CHAIN
ARG B 101 NH2	ARG A 21 NH2	3.024	INTER-CHAIN

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Protrusion Index:
ARG A 21 N	0.67
ARG A 21 CA	0.43
ARG A 21 C	0.36
ARG A 21 O	0.37
ARG A 21 CB	0.25
ARG A 21 CG	0.19
ARG A 21 CD	0.28
ARG A 21 NE	0.29
ARG A 21 CZ	0.39
ARG A 21 NH1	0.56
ARG A 21 NH2	0.49

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Van der Waal's Interactions:
TRP A 17 CH2 154	ARG A 21 NH2 184	-0.229	INTRA-CHAIN
ARG A 21 NH2 184	ALA A 50 CB 403	-0.290	INTRA-CHAIN
ARG A 21 NH2 184	HIS A 54 NE2 433	-0.592	INTRA-CHAIN
ARG A 21 NH2 184	LEU B 93 CD2 1622	-0.009	INTER-CHAIN