Structural features of residue 20 in chain D

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Electrostatic Interactions:
HIS B 3 ND1	ARG D 20 NH1	3.015	INTER-CHAIN
HIS B 3 NE2	ARG D 20 NH1	2.724	INTER-CHAIN
ARG B 26 NH1	ARG D 20 NH2	3.122	INTER-CHAIN
ARG B 26 NH2	ARG D 20 NH2	3.013	INTER-CHAIN
ARG D 20 NH1	HIS B 3 NE2	2.724	INTER-CHAIN
ARG D 20 NH1	HIS D 21 NE2	2.911	INTRA-CHAIN
ARG D 20 NH1	ARG D 44 NH1	4.547	INTRA-CHAIN
ARG D 20 NH1	ARG D 44 NH2	4.872	INTRA-CHAIN
ARG D 20 NH2	HIS B 3 NE2	2.853	INTER-CHAIN
ARG D 20 NH2	HIS D 21 NE2	2.869	INTRA-CHAIN
ARG D 20 NH2	ARG B 26 NH1	3.122	INTER-CHAIN
ARG D 20 NH2	ARG B 26 NH2	3.013	INTER-CHAIN
ARG D 20 NH2	ARG D 44 NH1	3.884	INTRA-CHAIN
ARG D 20 NH2	ARG D 44 NH2	4.069	INTRA-CHAIN
ARG D 20 NH2	HIS F 65 NE2	2.339	INTER-CHAIN
HIS D 21 ND1	ARG D 20 NH1	2.829	INTRA-CHAIN
HIS D 21 NE2	ARG D 20 NH1	2.911	INTRA-CHAIN
ARG D 44 NH1	ARG D 20 NH1	4.547	INTRA-CHAIN
ARG D 44 NH1	ARG D 20 NH2	3.884	INTRA-CHAIN
ARG D 44 NH2	ARG D 20 NH1	4.872	INTRA-CHAIN
ARG D 44 NH2	ARG D 20 NH2	4.069	INTRA-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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|        F|       69|      A|         R|       20|      D|
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Van der Waal's Interactions:
ALA B 2 CB 659	ARG D 20 NH2 2216	-1.031	INTER-CHAIN
SER D 9 OG 2105	ARG D 20 NH2 2216	-0.009	INTRA-CHAIN
LYS D 11 NZ 2122	ARG D 20 NH2 2216	-0.195	INTRA-CHAIN
ARG D 20 NH2 2216	TRP D 54 CH2 2502	-0.034	INTRA-CHAIN