4cis

X-ray diffraction
2.05Å resolution

Structure of MutM in complex with carbocyclic 8-oxo-G containing DNA

Released:

Function and Biology Details

Reactions catalysed:
Hydrolysis of DNA containing ring-opened 7-methylguanine residues, releasing 2,6-diamino-4-hydroxy-5-(N-methyl)formamidopyrimidine
The C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
PDBe Complex ID:
PDB-CPX-117291 (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
Formamidopyrimidine-DNA glycosylase Chains: A, B
Molecule details ›
Chains: A, B
Length: 283 amino acids
Theoretical weight: 32.56 KDa
Source organism: Lactococcus cremoris
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: Q031W6 (Residues: 1-272; Coverage: 100%)
Gene names: LACR_0399, fpg, mutM
Sequence domains:
Structure domains:
DNA Chain: C
Molecule details ›
Chain: C
Length: 14 nucleotides
Theoretical weight: 4.36 KDa
Source organism: synthetic construct
Expression system: Not provided
DNA Chain: D
Molecule details ›
Chain: D
Length: 14 nucleotides
Theoretical weight: 4.22 KDa
Source organism: synthetic construct
Expression system: Not provided

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06SA
Spacegroup: P212121
Unit cell:
a: 43.063Å b: 112.692Å c: 132.882Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.215 0.214 0.239
Expression systems:
  • Escherichia coli BL21
  • Not provided