6rnr

X-ray diffraction
2Å resolution

The crystal structure of a complex between the LlFpg protein, a THF-DNA and an inhibitor

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
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
PDBe Complex ID:
PDB-CPX-120558 (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
Formamidopyrimidine-DNA glycosylase Chain: A
Molecule details ›
Chain: A
Length: 272 amino acids
Theoretical weight: 31.23 KDa
Source organism: Lactococcus cremoris
Expression system: Escherichia coli
UniProt:
  • Canonical: P42371 (Residues: 2-138, 140-273; Coverage: 99%)
Gene names: fpg, mutM
Sequence domains:
DNA (5'-D(*CP*TP*CP*TP*TP*TP*(3DR)P*TP*TP*TP*CP*TP*CP*G)-3') Chain: D
Molecule details ›
Chain: D
Length: 14 nucleotides
Theoretical weight: 4.05 KDa
DNA (5'-D(*GP*CP*GP*AP*GP*AP*AP*AP*CP*AP*AP*AP*GP*A)-3') Chain: E
Molecule details ›
Chain: E
Length: 14 nucleotides
Theoretical weight: 4.36 KDa

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE MASSIF-3
Spacegroup: P41212
Unit cell:
a: 91.813Å b: 91.813Å c: 141.617Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.175 0.174 0.195
Expression system: Escherichia coli