1fn7

X-ray diffraction
2.6Å resolution

COUPLING OF DAMAGE RECOGNITION AND CATALYSIS BY A HUMAN BASE-EXCISION DNA REPAIR PROTEIN

Released:
Source organism: Homo sapiens

Function and Biology Details

Reaction catalysed:
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

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-113818 (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
N-glycosylase/DNA lyase Chain: A
Molecule details ›
Chain: A
Length: 317 amino acids
Theoretical weight: 35.65 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: O15527 (Residues: 9-325; Coverage: 92%)
Gene names: MMH, MUTM, OGG1, OGH1
Sequence domains:
Structure domains:
DNA (5'-D(*GP*GP*TP*AP*GP*AP*CP*CP*TP*GP*GP*AP*CP*GP*C)-3') Chain: C
Molecule details ›
Chain: C
Length: 15 nucleotides
Theoretical weight: 4.64 KDa
Source organism: Homo sapiens
Expression system: Not provided
DNA (5'-D(*GP*CP*GP*TP*CP*CP*AP*(3DR)P*GP*TP*CP*TP*AP*CP*C)-3') Chain: D
Molecule details ›
Chain: D
Length: 15 nucleotides
Theoretical weight: 4.4 KDa
Source organism: Homo sapiens
Expression system: Not provided

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 19-ID
Spacegroup: P6522
Unit cell:
a: 92.113Å b: 92.113Å c: 211.014Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.221 0.221 0.27
Expression systems:
  • Escherichia coli
  • Not provided