Structural features of residue 81 in chain A

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Electrostatic Interactions:
HIS A 8 ND1	ARG A 81 NH1	3.719	INTRA-CHAIN
HIS A 8 NE2	ARG A 81 NH1	2.980	INTRA-CHAIN
ARG A 81 NH1	HIS A 8 NE2	2.980	INTRA-CHAIN
ARG A 81 NH1	ARG B 35 NH1	5.788	INTER-CHAIN
ARG A 81 NH1	ARG B 35 NH2	5.313	INTER-CHAIN
ARG A 81 NH1	HIS B 46 NE2	2.615	INTER-CHAIN
ARG A 81 NH1	ARG B 87 NH1	3.607	INTER-CHAIN
ARG A 81 NH1	ARG B 87 NH2	4.387	INTER-CHAIN
ARG A 81 NH1	HIS B 121 NE2	2.223	INTER-CHAIN
ARG A 81 NH2	HIS A 8 NE2	2.856	INTRA-CHAIN
ARG A 81 NH2	ARG B 35 NH1	6.636	INTER-CHAIN
ARG A 81 NH2	ARG B 35 NH2	6.367	INTER-CHAIN
ARG A 81 NH2	HIS B 46 NE2	2.583	INTER-CHAIN
ARG A 81 NH2	ARG B 87 NH1	3.703	INTER-CHAIN
ARG A 81 NH2	ARG B 87 NH2	4.570	INTER-CHAIN
ARG A 81 NH2	HIS B 121 NE2	2.505	INTER-CHAIN
ARG B 35 NH1	ARG A 81 NH1	5.788	INTER-CHAIN
ARG B 35 NH1	ARG A 81 NH2	6.636	INTER-CHAIN
ARG B 35 NH2	ARG A 81 NH1	5.313	INTER-CHAIN
ARG B 35 NH2	ARG A 81 NH2	6.367	INTER-CHAIN
HIS B 46 ND1	ARG A 81 NH1	2.604	INTER-CHAIN
HIS B 46 NE2	ARG A 81 NH1	2.615	INTER-CHAIN
ARG B 87 NH1	ARG A 81 NH1	3.607	INTER-CHAIN
ARG B 87 NH1	ARG A 81 NH2	3.703	INTER-CHAIN
ARG B 87 NH2	ARG A 81 NH1	4.387	INTER-CHAIN
ARG B 87 NH2	ARG A 81 NH2	4.570	INTER-CHAIN
HIS B 121 ND1	ARG A 81 NH1	2.332	INTER-CHAIN
HIS B 121 NE2	ARG A 81 NH1	2.223	INTER-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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|        R|       81|      A|         T|       82|      B|
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Protrusion Index:
ARG A 81 N	0.19
ARG A 81 CA	0.20
ARG A 81 C	0.17
ARG A 81 O	0.15
ARG A 81 CB	0.29
ARG A 81 CG	0.31
ARG A 81 CD	0.42
ARG A 81 NE	0.37
ARG A 81 CZ	0.50
ARG A 81 NH1	0.59
ARG A 81 NH2	0.56

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Salt bridges:
ASP A 77	ARG A 81	2.992	INTRA-CHAIN

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Van der Waal's Interactions:
GLY A 79 O 576	ARG A 81 NH2 596	-0.064	INTRA-CHAIN
ARG A 81 NH2 596	LYS B 84 NZ 1652	-0.022	INTER-CHAIN
ARG B 35 NH2 1262	ARG A 81 NH2 596	-0.008	INTER-CHAIN