Orotidine 5'-phosphate decarboxylase

Orotidine-5'-phosphate decarboxylase
E. coli OMP decarboxylase.[1]
Identifiers
EC no.4.1.1.23
CAS no.9024-62-8
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
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PMCarticles
PubMedarticles
NCBIproteins

Orotidine 5′-phosphate decarboxylase (OMP decarboxylase) or orotidylate decarboxylase is an enzyme involved in pyrimidine biosynthesis. It catalyzes the decarboxylation of orotidine monophosphate (OMP) to form uridine monophosphate (UMP). The function of this enzyme is essential to the de novo biosynthesis of the pyrimidine nucleotides uridine triphosphate, cytidine triphosphate, and thymidine triphosphate. OMP decarboxylase has been a frequent target for scientific investigation because of its demonstrated extreme catalytic efficiency and its usefulness as a selection marker for yeast strain engineering.

Schematic of reaction catalyzed by OMP decarboxylase
  1. ^ PDB: 1EIX​; Harris P, Navarro Poulsen JC, Jensen KF, Larsen S (April 2000). "Structural basis for the catalytic mechanism of a proficient enzyme: orotidine 5'-monophosphate decarboxylase". Biochemistry. 39 (15): 4217–24. doi:10.1021/bi992952r. PMID 10757968.

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