Structural features of residue 21 in chain A

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Electrostatic Interactions:
ASP A 11 OD1	ASP A 21 OD1	2.902	INTRA-CHAIN
ASP A 11 OD1	ASP A 21 OD2	2.693	INTRA-CHAIN
ASP A 11 OD2	ASP A 21 OD1	2.963	INTRA-CHAIN
ASP A 11 OD2	ASP A 21 OD2	2.707	INTRA-CHAIN
ASP A 21 OD1	ASP A 11 OD1	2.902	INTRA-CHAIN
ASP A 21 OD1	ASP A 11 OD2	2.963	INTRA-CHAIN
ASP A 21 OD1	GLU A 23 OE1	3.831	INTRA-CHAIN
ASP A 21 OD1	ASP B 37 OD1	2.725	INTER-CHAIN
ASP A 21 OD1	GLU B 40 OE1	4.322	INTER-CHAIN
ASP A 21 OD1	HIS B 47 ND1	-1.436	INTER-CHAIN
ASP A 21 OD1	ASP B 49 OD1	2.928	INTER-CHAIN
ASP A 21 OD1	ASP B 49 OD2	3.482	INTER-CHAIN
ASP A 21 OD1	GLU B 105 OE1	3.188	INTER-CHAIN
ASP A 21 OD2	ASP A 11 OD1	2.693	INTRA-CHAIN
ASP A 21 OD2	ASP A 11 OD2	2.707	INTRA-CHAIN
ASP A 21 OD2	GLU A 23 OE1	4.348	INTRA-CHAIN
ASP A 21 OD2	GLU B 40 OE1	4.256	INTER-CHAIN
ASP A 21 OD2	ASP B 49 OD2	2.958	INTER-CHAIN
ASP A 21 OD2	GLU B 105 OE1	2.751	INTER-CHAIN
GLU A 23 OE1	ASP A 21 OD2	4.348	INTRA-CHAIN
GLU A 23 OE2	ASP A 21 OD2	3.695	INTRA-CHAIN
GLU A 189 OE2	ASP A 21 OD2	2.679	INTRA-CHAIN
ASP B 37 OD1	ASP A 21 OD1	2.725	INTER-CHAIN
GLU B 40 OE1	ASP A 21 OD2	4.256	INTER-CHAIN
GLU B 40 OE2	ASP A 21 OD2	4.943	INTER-CHAIN
HIS B 47 ND1	ASP A 21 OD1	-1.436	INTER-CHAIN
ASP B 49 OD1	ASP A 21 OD1	2.928	INTER-CHAIN
ASP B 49 OD2	ASP A 21 OD1	3.482	INTER-CHAIN
ASP B 49 OD2	ASP A 21 OD2	2.958	INTER-CHAIN
GLU B 105 OE1	ASP A 21 OD2	2.751	INTER-CHAIN
GLU B 105 OE2	ASP A 21 OD2	2.741	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|       43|      B|         D|       21|      A|
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Protrusion Index:
ASP A 21 N	0.41
ASP A 21 CA	0.59
ASP A 21 C	0.72
ASP A 21 O	0.97
ASP A 21 CB	0.80
ASP A 21 CG	0.97
ASP A 21 OD1	0.83
ASP A 21 OD2	1.42

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Van der Waal's Interactions:
ARG A 17 NH2 136	ASP A 21 OD2 166	-0.375	INTRA-CHAIN
ASP A 21 OD2 166	ARG B 43 NH2 2761	-0.484	INTER-CHAIN