Structural features of residue 21 in chain A

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Electrostatic Interactions:
HIS A 14 ND1	ASP A 21 OD1	-1.568	INTRA-CHAIN
HIS A 14 NE2	ASP A 21 OD1	-1.618	INTRA-CHAIN
ASP A 21 OD1	HIS A 14 ND1	-1.568	INTRA-CHAIN
ASP A 21 OD1	GLU A 28 OE1	4.667	INTRA-CHAIN
ASP A 21 OD1	GLU B 54 OE1	3.014	INTER-CHAIN
ASP A 21 OD1	GLU B 56 OE1	4.531	INTER-CHAIN
ASP A 21 OD1	ASP A 185 OD2	2.849	INTRA-CHAIN
ASP A 21 OD2	HIS A 14 ND1	-1.772	INTRA-CHAIN
ASP A 21 OD2	GLU A 28 OE1	4.415	INTRA-CHAIN
ASP A 21 OD2	GLU B 51 OE1	2.892	INTER-CHAIN
ASP A 21 OD2	GLU B 52 OE1	2.794	INTER-CHAIN
ASP A 21 OD2	GLU B 54 OE1	3.433	INTER-CHAIN
ASP A 21 OD2	GLU B 56 OE1	4.369	INTER-CHAIN
ASP A 21 OD2	ASP A 185 OD1	2.780	INTRA-CHAIN
ASP A 21 OD2	ASP A 185 OD2	2.911	INTRA-CHAIN
GLU A 28 OE1	ASP A 21 OD2	4.415	INTRA-CHAIN
GLU A 28 OE2	ASP A 21 OD2	4.371	INTRA-CHAIN
ASP A 185 OD1	ASP A 21 OD2	2.780	INTRA-CHAIN
ASP A 185 OD2	ASP A 21 OD1	2.849	INTRA-CHAIN
ASP A 185 OD2	ASP A 21 OD2	2.911	INTRA-CHAIN
GLU B 51 OE1	ASP A 21 OD2	2.892	INTER-CHAIN
GLU B 52 OE1	ASP A 21 OD2	2.794	INTER-CHAIN
GLU B 54 OE1	ASP A 21 OD2	3.433	INTER-CHAIN
GLU B 54 OE2	ASP A 21 OD2	3.744	INTER-CHAIN
GLU B 56 OE1	ASP A 21 OD2	4.369	INTER-CHAIN
GLU B 56 OE2	ASP A 21 OD2	5.186	INTER-CHAIN

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Protrusion Index:
ASP A 21 N	0.09
ASP A 21 CA	0.20
ASP A 21 C	0.29
ASP A 21 O	0.31
ASP A 21 CB	0.32
ASP A 21 CG	0.59
ASP A 21 OD1	0.78
ASP A 21 OD2	0.64

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Salt bridges:
ASP A 21	ARG A 204	3.098	INTRA-CHAIN
ASP A 21	LYS A 22	3.120	INTRA-CHAIN

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Van der Waal's Interactions:
THR A 17 CG2 134	ASP A 21 OD2 173	-0.023	INTRA-CHAIN
ASP A 21 OD2 173	ASN A 23 ND2 190	-0.128	INTRA-CHAIN
ASP A 21 OD2 173	ILE B 55 CD1 2048	-0.033	INTER-CHAIN