Structural features of residue 21 in chain B

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Electrostatic Interactions:
HIS A 47 ND1	ARG B 21 NH1	3.512	INTER-CHAIN
HIS A 47 NE2	ARG B 21 NH1	4.267	INTER-CHAIN
ARG B 21 NH1	HIS A 47 NE2	4.267	INTER-CHAIN
ARG B 21 NH1	HIS B 63 NE2	4.614	INTRA-CHAIN
ARG B 21 NH1	HIS B 68 NE2	6.502	INTRA-CHAIN
ARG B 21 NH2	HIS A 47 NE2	3.280	INTER-CHAIN
ARG B 21 NH2	HIS B 63 NE2	4.403	INTRA-CHAIN
ARG B 21 NH2	HIS B 68 NE2	4.496	INTRA-CHAIN
HIS B 63 ND1	ARG B 21 NH1	4.155	INTRA-CHAIN
HIS B 63 NE2	ARG B 21 NH1	4.614	INTRA-CHAIN
HIS B 68 ND1	ARG B 21 NH1	9.736	INTRA-CHAIN
HIS B 68 NE2	ARG B 21 NH1	6.502	INTRA-CHAIN

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Hydrogen bonds:

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|Res1 type| Res1 No.| Chain1| Res2 type| Res2 No.| Chain2|
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|        Y|       46|      A|         R|       21|      B|
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Protrusion Index:
ARG B 21 N	0.34
ARG B 21 CA	0.23
ARG B 21 C	0.23
ARG B 21 O	0.15
ARG B 21 CB	0.13
ARG B 21 CG	0.01
ARG B 21 CD	0.07
ARG B 21 NE	0.13
ARG B 21 CZ	0.17
ARG B 21 NH1	0.13
ARG B 21 NH2	0.25

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Van der Waal's Interactions:
GLU B 20 OE2 2204	ARG B 21 NH2 2215	-0.014	INTRA-CHAIN
ARG B 21 NH2 2215	SER B 23 OG 2230	-0.009	INTRA-CHAIN
ARG B 21 NH2 2215	LYS B 24 NZ 2239	-0.061	INTRA-CHAIN
ARG B 21 NH2 2215	TYR A 46 OH 378	-0.011	INTER-CHAIN
ARG B 21 NH2 2215	LEU B 64 CD2 2566	-0.011	INTRA-CHAIN
ARG B 21 NH2 2215	GLY B 67 O 2585	-0.376	INTRA-CHAIN