Structural features of residue 4 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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|        H|        4|      A|         D|      115|      B|
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Protrusion Index:
HIS A 4 N	0.56
HIS A 4 CA	0.41
HIS A 4 C	0.77
HIS A 4 O	0.98
HIS A 4 CB	0.46
HIS A 4 CG	0.68
HIS A 4 ND1	0.72
HIS A 4 CD2	0.88
HIS A 4 CE1	1.06
HIS A 4 NE2	1.11