Structural features of residue 19 in chain A

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Electrostatic Interactions:
ARG A 17 NH1	HIS A 19 NE2	2.414	INTRA-CHAIN
ARG A 17 NH2	HIS A 19 NE2	2.344	INTRA-CHAIN
ARG A 18 NH1	HIS A 19 NE2	2.362	INTRA-CHAIN
ARG A 18 NH2	HIS A 19 NE2	2.165	INTRA-CHAIN
HIS A 19 ND1	ARG A 17 NH1	2.719	INTRA-CHAIN
HIS A 19 ND1	ARG A 18 NH1	2.782	INTRA-CHAIN
HIS A 19 ND1	HIS B 75 ND1	0.937	INTER-CHAIN
HIS A 19 ND1	HIS B 75 NE2	1.836	INTER-CHAIN
HIS A 19 NE2	ARG A 17 NH1	2.414	INTRA-CHAIN
HIS A 19 NE2	ARG A 18 NH1	2.362	INTRA-CHAIN
HIS A 19 NE2	HIS B 75 ND1	0.859	INTER-CHAIN
HIS A 19 NE2	HIS B 75 NE2	1.678	INTER-CHAIN
HIS B 75 ND1	HIS A 19 ND1	0.937	INTER-CHAIN
HIS B 75 ND1	HIS A 19 NE2	1.934	INTER-CHAIN
HIS B 75 NE2	HIS A 19 ND1	0.816	INTER-CHAIN
HIS B 75 NE2	HIS A 19 NE2	1.678	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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|        H|       19|      A|         V|       42|      B|
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Protrusion Index:
HIS A 19 N	0.25
HIS A 19 CA	0.17
HIS A 19 C	0.18
HIS A 19 O	0.22
HIS A 19 CB	0.14
HIS A 19 CG	0.20
HIS A 19 ND1	0.18
HIS A 19 CD2	0.17
HIS A 19 CE1	0.17
HIS A 19 NE2	0.15

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Salt bridges:
ARG A 18	HIS A 19	2.720	INTRA-CHAIN

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Van der Waal's Interactions:
PHE A 16 CZ 72	HIS A 19 NE2 104	-0.027	INTRA-CHAIN
HIS A 19 NE2 104	ALA B 24 CB 130	-0.056	INTER-CHAIN