Structural features of residue 21 in chain D

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Hydrogen bonds:

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|Res1 type| Res1 No.| Chain1| Res2 type| Res2 No.| Chain2|
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|        S|       21|      C|         S|       21|      D|
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|        R|       23|      C|         S|       21|      D|
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Van der Waal's Interactions:
PHE C 19 CZ 2360	SER D 21 OG 3501	-0.024	INTER-CHAIN
PHE D 19 CZ 3481	SER D 21 OG 3501	-0.130	INTRA-CHAIN
SER D 21 OG 3501	LEU D 136 CD2 4326	-0.023	INTRA-CHAIN
SER D 21 OG 3501	TYR D 149 OH 4426	-2.332	INTRA-CHAIN