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Ground-state destabilization in orotate phosphoribosyltransferases by binding isotope effects.
Zhang Y, Schramm VL. Zhang Y, et al. Biochemistry. 2011 May 31;50(21):4813-8. doi: 10.1021/bi200638x. Epub 2011 May 6. Biochemistry. 2011. PMID: 21526795 Free PMC article.
Orotate phosphoribosyltransferases (OPRTs) form and break the N-ribosidic bond to pyrimidines by way of ribocation-like transition states (TSs) and therefore exhibit large alpha-secondary 1'-(3)H k(cat)/K(m) kinetic isotope effects (KIEs) [Zhang, Y., and Schramm, V. …
Orotate phosphoribosyltransferases (OPRTs) form and break the N-ribosidic bond to pyrimidines by way of ribocation-like transition states (T …
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