Cocatalytic zinc motifs in enzyme catalysis. Vallee, B L & Auld, D S Proceedings of the National Academy of Sciences of the United States of America, 90(7):2715--2718, April, 1993. ![Cocatalytic zinc motifs in enzyme catalysis [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex Cocatalytic zinc binding sites are characteristic of enzyme molecules which contain two or more zinc and/or other metal atoms. In each site an aspartate, glutamate, or histidine residue simultaneously binds to two zinc atoms or a zinc and a different metal atom. In the resultant amino acid bridge, two of the cocatalytic metal atoms bind to the same amino acid. Consequently the participating metal atoms are in close proximity and function as a catalytic unit, typical of this motif. In these functional units aspartate seems to be preferred over glutamate. Serine, threonine, tryptophan, and lysine residues are encountered as zinc ligands, although they have not so far been identified as ligands in monozinc enzymes or DNA-binding zinc proteins. The resultant coordination spheres and their mechanistic implications raise interesting questions for further study.
@article{vallee_cocatalytic_1993,
title = {Cocatalytic zinc motifs in enzyme catalysis},
volume = {90},
issn = {0027-8424},
url = {http://www.ncbi.nlm.nih.gov/pubmed/8464881},
abstract = {Cocatalytic zinc binding sites are characteristic of enzyme molecules which contain two or more zinc and/or other metal atoms. In each site an aspartate, glutamate, or histidine residue simultaneously binds to two zinc atoms or a zinc and a different metal atom. In the resultant amino acid bridge, two of the cocatalytic metal atoms bind to the same amino acid. Consequently the participating metal atoms are in close proximity and function as a catalytic unit, typical of this motif. In these functional units aspartate seems to be preferred over glutamate. Serine, threonine, tryptophan, and lysine residues are encountered as zinc ligands, although they have not so far been identified as ligands in monozinc enzymes or DNA-binding zinc proteins. The resultant coordination spheres and their mechanistic implications raise interesting questions for further study.},
number = {7},
urldate = {2009-11-20TZ},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
author = {Vallee, B L and Auld, D S},
month = apr,
year = {1993},
pmid = {8464881},
keywords = {Alkaline Phosphatase, Amino Acid Sequence, Animals, Binding Sites, Cattle, Enzymes, Escherichia coli, Metalloproteins, Models, Structural, Molecular Sequence Data, Protein Conformation, Sequence Homology, Amino Acid, Zinc},
pages = {2715--2718}
}
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