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crystal structure of orotidine monophosphate decarboxylase mutant deltaR203A complexed with 6-azaUMPcrystal structure of orotidine monophosphate decarboxylase mutant deltaR203A complexed with 6-azaUMP
Structural highlights
Function[PYRF_METTH] Catalyzes the decarboxylation of orotidine 5'-monophosphate (OMP) to uridine 5'-monophosphate (UMP).[HAMAP-Rule:MF_01200_A] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe crystal structures of the enzyme orotidine-5'-monophosphate decarboxylase from Methanobacterium thermoautotrophicum complexed with its product UMP and the inhibitors 6-hydroxyuridine 5'-phosphate (BMP), XMP, and CMP are reported. A mutant version of the protein, in which four residues of the flexible phosphate-binding loop (180)Gly-Gly(190) were removed and Arg(203) was replaced by alanine, was also analyzed. The XMP and CMP complexes reveal a ligand-binding mode that is distinct from the one identified previously with the aromatic rings located outside the binding pocket. A potential pathway for ligand binding is discussed. Crystal structures of inhibitor complexes reveal an alternate binding mode in orotidine-5'-monophosphate decarboxylase.,Wu N, Pai EF J Biol Chem. 2002 Aug 2;277(31):28080-7. Epub 2002 May 13. PMID:12011084[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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