Structural features of residue 21 in chain A

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Hydrogen bonds:

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|Res1 type| Res1 No.| Chain1| Res2 type| Res2 No.| Chain2|
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|        A|       21|      B|         L|      125|      A|
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|        A|       21|      C|         L|      125|      D|
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Van der Waal's Interactions:
ALA A 21 CB 46	ASP B 127 OD2 1889	-0.384	INTER-CHAIN