orotate phosphoribosyltransferase

orotate phosphoribosyltransferase
(OPRT) or·o·tate phos·pho·ri·bo·syl·trans·fer·ase (OPRT) (orґo-tāt fos″fo-ri″bo-səl-transґfər-ās) [EC 2.4.2.10] an enzyme activity of the transferase class that catalyzes the transfer to orotate of a ribosyl group from phosphoribosylpyrophosphate (PRPP) to form orotidine 5′-phosphate as a step in the synthesis of pyrimidine nucleotides. The catalytic sites for this activity and for orotidine 5′-phosphate decarboxylase (ODC) activity occur on a single protein, called UMP synthase; deficiency of both activities, an autosomal recessive trait, results in hereditary oroticaciduria, type I.

Medical dictionary. 2011.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Orotate phosphoribosyltransferase — S. cerevisiae orotate phosphoribosyl transferase bound to its substrates. From PDB file 2PSI.[ …   Wikipedia

  • orotate — A salt or ester of orotic acid. o. phosphoribosyltransferase a phosphoribosyltransferase synthesizing orotidylate and pyrophosphate from o. and 5 phospho α d ribosyl 1 pyrophosphate; this enzyme is a part of pyrimidine …   Medical dictionary

  • OPRTase — orotate phosphoribosyltransferase …   Medical dictionary

  • OPRT — • orotate phosphoribosyltransferase …   Dictionary of medical acronyms & abbreviations

  • OPRTase — • orotate phosphoribosyltransferase …   Dictionary of medical acronyms & abbreviations

  • OPRT — orotate phosphoribosyltransferase * * * orotate phosphoribosyltransferase …   Medical dictionary

  • Uridine monophosphate synthetase — PDB rendering based on 2eaw …   Wikipedia

  • Orotidine 5'-phosphate decarboxylase — E. coli OMP decarboxylase.[1] Identifiers EC number …   Wikipedia

  • Phosphoribosylpyrophosphate — Structure du phosphoribosylpyrophosphate Général Synonymes α D …   Wikipédia en Français

  • List of EC numbers (EC 2) — This list contains a list of EC numbers for the second group, EC 2, transferases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.EC 2.1: Transferring One… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”