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Title

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

AuthorsVoříšek, J.; Benoist, Patrick
Issue Date2002
PublisherWiley-Blackwell
CitationYeast 19(5): 449-457 (2002)
AbstractComputational analysis predicted three potential hydrophobic transmembrane α-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. Copyright © 2002 John Wiley & Sons, Ltd.
URIhttp://hdl.handle.net/10261/80094
DOI10.1002/yea.845
Identifiersdoi: 10.1002/yea.845
issn: 0749-503X
e-issn: 1097-0061
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