Structural features of residue 20 in chain A

*********************************
Electrostatic Interactions:
HIS A 20 ND1	ARG A 28 NH1	2.221	INTRA-CHAIN
HIS A 20 ND1	ASP A 61 OD1	-1.580	INTRA-CHAIN
HIS A 20 ND1	ASP A 63 OD1	-1.378	INTRA-CHAIN
HIS A 20 ND1	HIS A 64 ND1	0.864	INTRA-CHAIN
HIS A 20 ND1	HIS A 64 NE2	2.045	INTRA-CHAIN
HIS A 20 ND1	HIS A 66 ND1	2.133	INTRA-CHAIN
HIS A 20 ND1	HIS A 66 NE2	3.424	INTRA-CHAIN
HIS A 20 ND1	ASP B 70 OD1	-1.435	INTER-CHAIN
HIS A 20 NE2	ARG A 28 NH1	2.285	INTRA-CHAIN
HIS A 20 NE2	ASP A 61 OD1	-1.790	INTRA-CHAIN
HIS A 20 NE2	ASP A 63 OD1	-1.520	INTRA-CHAIN
HIS A 20 NE2	HIS A 64 ND1	0.969	INTRA-CHAIN
HIS A 20 NE2	HIS A 64 NE2	2.230	INTRA-CHAIN
HIS A 20 NE2	HIS A 66 ND1	3.436	INTRA-CHAIN
HIS A 20 NE2	HIS A 66 NE2	4.509	INTRA-CHAIN
ARG A 28 NH1	HIS A 20 NE2	2.285	INTRA-CHAIN
ARG A 28 NH2	HIS A 20 NE2	2.482	INTRA-CHAIN
ASP A 61 OD1	HIS A 20 ND1	-1.580	INTRA-CHAIN
ASP A 61 OD2	HIS A 20 ND1	-1.507	INTRA-CHAIN
ASP A 63 OD1	HIS A 20 ND1	-1.378	INTRA-CHAIN
HIS A 64 ND1	HIS A 20 ND1	0.864	INTRA-CHAIN
HIS A 64 ND1	HIS A 20 NE2	2.180	INTRA-CHAIN
HIS A 64 NE2	HIS A 20 ND1	0.909	INTRA-CHAIN
HIS A 64 NE2	HIS A 20 NE2	2.230	INTRA-CHAIN
HIS A 66 ND1	HIS A 20 ND1	2.133	INTRA-CHAIN
HIS A 66 ND1	HIS A 20 NE2	7.731	INTRA-CHAIN
HIS A 66 NE2	HIS A 20 ND1	1.522	INTRA-CHAIN
HIS A 66 NE2	HIS A 20 NE2	4.509	INTRA-CHAIN
ASP A 70 OD2	HIS A 20 ND1	-1.379	INTRA-CHAIN
ASP B 70 OD1	HIS A 20 ND1	-1.435	INTER-CHAIN

*********************************
Protrusion Index:
HIS A 20 N	0.01
HIS A 20 CA	0.06
HIS A 20 C	0.08
HIS A 20 O	0.11
HIS A 20 CB	0.03
HIS A 20 CG	0.11
HIS A 20 ND1	0.20
HIS A 20 CD2	0.10
HIS A 20 CE1	0.26
HIS A 20 NE2	0.15

*********************************
Salt bridges:
HIS A 20	HIS A 66	2.919	INTRA-CHAIN

*********************************
Van der Waal's Interactions:
HIS A 20 NE2 137	VAL A 22 CG2 152	-0.293	INTRA-CHAIN
HIS A 20 NE2 137	HIS A 66 NE2 524	-0.056	INTRA-CHAIN
HIS A 20 NE2 137	VAL B 124 CG2 2201	-0.008	INTER-CHAIN
HIS A 20 NE2 137	TYR B 127 OH 2231	-0.032	INTER-CHAIN
HIS A 20 NE2 137	ILE B 128 CD1 2239	-0.317	INTER-CHAIN