PDBe 3uob

X-ray diffraction
3.01Å resolution

Crystal structure of Human Thymine DNA Glycosylase Bound to Substrate Analog 2'-deoxy-2'-beta-fluoro-cytidine


Function and Biology Details

Reaction catalysed:
Hydrolyzes mismatched double-stranded DNA and polynucleotides, releasing free thymine. 
Biochemical function:
Biological process:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
G/T mismatch-specific thymine DNA glycosylase Chains: A, B
Molecule details ›
Chains: A, B
Length: 201 amino acids
Theoretical weight: 22.77 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: Q13569 (Residues: 111-308; Coverage: 48%)
Gene name: TDG
Sequence domains: Uracil DNA glycosylase superfamily
Structure domains: Uracil-DNA Glycosylase, subunit E
Molecule details ›
Chain: C
Length: 23 nucleotides
Theoretical weight: 7.12 KDa
Source organism: Synthetic construct
Expression system: Not provided
Molecule details ›
Chain: D
Length: 23 nucleotides
Theoretical weight: 7.06 KDa
Source organism: Synthetic construct
Expression system: Not provided

Ligands and Environments

No bound ligands

1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 24-ID-E
Spacegroup: P65
Unit cell:
a: 163.418Å b: 163.418Å c: 54.701Å
α: 90° β: 90° γ: 120°
R R work R free
0.225 0.219 0.276
Expression systems:
  • Escherichia coli
  • Not provided