PMID: 11921093Mar 29, 2002Paper

Enzymatic activities of Ura2 and Ura1 proteins (aspartate carbamoyltransferase and dihydro-orotate dehydrogenase) are present in both isolated membranes and cytoplasm of Saccharomyces cerevisiae

Yeast
J VorísekP Benoist

Abstract

Computational analysis predicted three potential hydrophobic transmembrane alpha-helices within the Ura2 multidomain protein of Saccharomyces cerevisiae, the C-terminal subdomain of which catalyses the second step of uridine-monophosphate biosynthesis by its L-aspartate carbamoyltransferase activity (EC 2.1.3.2). The fourth step of pyrimidine biosynthesis is catalysed by dihydro-orotate dehydrogenase (Ura1 protein; EC 1.3.99.11), which was similarly characterized as a peripheral membrane protein. Ex situ, the activities of the investigated enzymes were associated both with isolated yeast membranes, fractionated by differential centrifugation to remove intact nuclei, and with soluble cytoplasmic proteins.

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Citations

Jul 12, 2002·Yeast
Apr 3, 2004·Folia Microbiologica·J Vorísek, L Kalachová
Sep 10, 2017·Physiological Genomics·Ceyhun BereketogluBulent Mertoglu

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