Crystal structure of orotidine monophosphate decarboxylase complexed with CMP

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 

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Crystal structures of inhibitor complexes reveal an alternate binding mode in orotidine-5'-monophosphate decarboxylase.

Wu, N.Pai, E.F.

(2002) J Biol Chem 277: 28080-28087

  • DOI: https://doi.org/10.1074/jbc.M202362200
  • Primary Citation of Related Structures:  
    1LOL, 1LOQ, 1LOR, 1LOS, 1LP6

  • PubMed Abstract: 

    The 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.

  • Organizational Affiliation

    Department of Biochemistry, University of Toronto, Ontario M5S 1A8, Canada.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
orotidine monophosphate decarboxylase
A, B
229ArchaeaMutation(s): 0 
Find proteins for O26232 (Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H))
Explore O26232 
Go to UniProtKB:  O26232
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO26232
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.13α = 90
b = 55.663β = 94.77
c = 65.838γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-08-07
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-31
    Changes: Experimental preparation
  • Version 1.4: 2024-02-14
    Changes: Data collection, Database references, Derived calculations