Histidine

amino-acid

(S)-2-amino-3-(1H-imidazol-4-yl)propanoic acid

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About

Contains an imidazole ring that can be protonated at physiological pH. Important in enzyme active sites. Precursor to histamine.

Molecular Properties

Formula
C6H9N3O2
Molecular Weight
155.15 g/mol
SMILES
N[C@@H](Cc1c[nH]cn1)C(=O)O