Structural features of residue 21 in chain B

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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|      A|         S|       21|      B|
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|        R|       23|      A|         S|       21|      B|
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Van der Waal's Interactions:
PHE A 19 CZ 134	SER B 21 OG 1265	-0.023	INTER-CHAIN
PHE B 19 CZ 1245	SER B 21 OG 1265	-0.132	INTRA-CHAIN
SER B 21 OG 1265	LEU B 136 CD2 2082	-0.022	INTRA-CHAIN
SER B 21 OG 1265	TYR B 149 OH 2190	-2.117	INTRA-CHAIN
SER B 21 OG 1265	TYR A 149 OH 1082	-0.389	INTER-CHAIN