NMR evidence for the participation of a low-barrier hydrogen bond in the mechanism of delta 5-3-ketosteroid isomerase.

Delta 5-3-Ketosteroid isomerase (EC 5.3.3.1) promotes an allylic rearrangement involving intramolecular proton transfer via a dienolic intermediate. This enzyme enhances the catalytic rate by a factor of 10(10). Two residues, Tyr-14, the general acid that polarizes the steroid 3-carbonyl group and f...

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Pubblicato in:	Proc Natl Acad Sci U S A
Autori principali:	Zhao, Q, Abeygunawardana, C, Talalay, P, Mildvan, A S
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	National Academy of Sciences 1996
Soggetti:	Research Article
Accesso online:	https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC38650/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/8710850/ https://ncbi.nlm.nih.govhttps://doi.org/10.1073/pnas.93.16.8220
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