PDBe 2f5o

X-ray diffraction
2.05Å resolution

MutM crosslinked to undamaged DNA sampling G:C base pair IC3


Function and Biology Details

Reaction catalysed:
Hydrolysis of DNA containing ring-opened 7-methylguanine residues, releasing 2,6-diamino-4-hydroxy-5-(N-methyl)formamidopyrimidine. 
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
Formamidopyrimidine-DNA glycosylase Chain: A
Molecule details ›
Chain: A
Length: 274 amino acids
Theoretical weight: 30.71 KDa
Source organism: Geobacillus stearothermophilus
Expression system: Escherichia coli
  • Canonical: P84131 (Residues: 1-274; Coverage: 100%)
Gene names: fpg, mutM
Sequence domains:
Structure domains:
Molecule details ›
Chain: C
Length: 16 nucleotides
Theoretical weight: 4.85 KDa
Source organism: Synthetic construct
Expression system: Not provided
Molecule details ›
Chain: B
Length: 16 nucleotides
Theoretical weight: 4.95 KDa
Source organism: Synthetic construct
Expression system: Not provided

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: CHESS BEAMLINE A1
Spacegroup: P212121
Unit cell:
a: 45.543Å b: 93.253Å c: 105.257Å
α: 90° β: 90° γ: 90°
R R work R free
0.225 0.203 0.24
Expression systems:
  • Escherichia coli
  • Not provided