Structural features of residue 20 in chain A

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Electrostatic Interactions:
ARG A 20 NH1	HIS A 21 NE2	2.819	INTRA-CHAIN
ARG A 20 NH1	ARG E 26 NH1	3.440	INTER-CHAIN
ARG A 20 NH1	ARG E 26 NH2	3.614	INTER-CHAIN
ARG A 20 NH1	ARG A 44 NH1	3.267	INTRA-CHAIN
ARG A 20 NH1	ARG A 44 NH2	3.344	INTRA-CHAIN
ARG A 20 NH1	HIS A 56 NE2	2.466	INTRA-CHAIN
ARG A 20 NH2	HIS A 21 NE2	2.685	INTRA-CHAIN
ARG A 20 NH2	ARG E 26 NH1	4.173	INTER-CHAIN
ARG A 20 NH2	ARG E 26 NH2	4.461	INTER-CHAIN
ARG A 20 NH2	ARG A 44 NH2	3.008	INTRA-CHAIN
ARG A 20 NH2	HIS A 56 NE2	2.136	INTRA-CHAIN
HIS A 21 ND1	ARG A 20 NH1	3.006	INTRA-CHAIN
HIS A 21 NE2	ARG A 20 NH1	2.819	INTRA-CHAIN
ARG A 44 NH1	ARG A 20 NH1	3.267	INTRA-CHAIN
ARG A 44 NH2	ARG A 20 NH1	3.344	INTRA-CHAIN
ARG A 44 NH2	ARG A 20 NH2	3.008	INTRA-CHAIN
HIS A 56 ND1	ARG A 20 NH1	2.357	INTRA-CHAIN
HIS A 56 NE2	ARG A 20 NH1	2.466	INTRA-CHAIN
ARG E 26 NH1	ARG A 20 NH1	3.440	INTER-CHAIN
ARG E 26 NH1	ARG A 20 NH2	4.173	INTER-CHAIN
ARG E 26 NH2	ARG A 20 NH1	3.614	INTER-CHAIN
ARG E 26 NH2	ARG A 20 NH2	4.461	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|       20|      A|         F|       69|      D|
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Van der Waal's Interactions:
LYS A 11 NZ 88	ARG A 20 NH2 182	-0.104	INTRA-CHAIN
ARG A 20 NH2 182	TRP A 54 CH2 468	-0.028	INTRA-CHAIN