Structural features of residue 4 in chain A

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Electrostatic Interactions:
HIS A 4 NE2	ASP A 11 OD1	-1.455	INTRA-CHAIN
ASP A 11 OD2	HIS A 4 ND1	-1.415	INTRA-CHAIN
ARG B 80 NH2	HIS A 4 NE2	2.186	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|        4|      A|         Y|       51|      B|
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|        H|        4|      A|         G|       53|      B|
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Protrusion Index:
HIS A 4 N	0.37
HIS A 4 CA	0.51
HIS A 4 C	0.37
HIS A 4 O	0.27
HIS A 4 CB	0.80
HIS A 4 CG	0.75
HIS A 4 ND1	0.74
HIS A 4 CD2	0.81
HIS A 4 CE1	0.80
HIS A 4 NE2	0.84

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Van der Waal's Interactions:
HIS A 4 NE2 39	ASN B 54 ND2 443	-0.021	INTER-CHAIN