PDBe 2zvj

X-ray diffraction
2.3Å resolution

Crystal structures of rat Catechol-O-Methyltransferase complexed with coumarine-based inhibitor

Source organism: Rattus norvegicus
Primary publication:
Crystal structures of rat catechol-O-methyltransferase complexed with coumarine-based inhibitor.
Biochem. Biophys. Res. Commun. 378 494-7 (2009)
PMID: 19056347

Function and Biology Details

Reaction catalysed:
S-adenosyl-L-methionine + a catechol = S-adenosyl-L-homocysteine + a guaiacol. 
Biochemical function:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Catechol O-methyltransferase Chain: A
Molecule details ›
Chain: A
Length: 223 amino acids
Theoretical weight: 24.92 KDa
Source organism: Rattus norvegicus
Expression system: Escherichia coli
  • Canonical: P22734 (Residues: 44-264; Coverage: 84%)
  • Best match: P22734-2 (Residues: 1-221)
Gene name: Comt
Sequence domains:
Structure domains: Vaccinia Virus protein VP39

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL32B2
Spacegroup: P3221
Unit cell:
a: 50.448Å b: 50.448Å c: 167.626Å
α: 90° β: 90° γ: 120°
R R work R free
0.219 0.211 0.286
Expression system: Escherichia coli