orotate phosphoribosyltransferase(redirected from Orotidine 5'-phosphate decarboxylase)
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a phosphoribosyltransferase synthesizing orotidylate and pyrophosphate from orotate and 5-phospho-α-d-ribosyl-1-pyrophosphate; this enzyme is a part of pyrimidine biosynthesis; a deficiency of this enzyme is associated with orotic aciduria type I. Compare: uridylic acid synthase.
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