Histidine in Enzyme Active Centers
- 1 August 1978
- journal article
- review article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 17 (8) , 583-592
- https://doi.org/10.1002/anie.197805831
Abstract
The presence of histidine in the active center of an enzyme can be demonstrated by kinetic measurements, chemical modification, NMR spectroscopy or X‐ray structure analysis. Histidine is the only naturally occurring amino acid to contain an imidazole residue as a side chain. The role of histidine in enzyme catalysis depends, inter alia, upon the special features of the imidazole residue: it thus tends to form hydrogen bonds, combines donor and acceptor properties and can take part in either nucleophilic or base catalysis. In some of these enzymes the position of each atom is known; however, the theories as to how the catalysis proceeds at a molecular level are controversial.Keywords
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