X-ray diffraction
3.34Å resolution

Human DNA polymerase kappa extending opposite a cis-syn thymine dimer


Function and Biology Details

Reaction catalysed:
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
Biochemical function:
  • not assigned
Biological process:
  • not assigned
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):
DNA polymerase kappa Chains: A, B
Molecule details ›
Chains: A, B
Length: 517 amino acids
Theoretical weight: 58.9 KDa
Source organism: Homo sapiens
Expression system: Saccharomyces cerevisiae
  • Canonical: Q9UBT6 (Residues: 19-528; Coverage: 59%)
Gene names: DINB1, POLK
Sequence domains:
Structure domains:
5'-D(*GP*GP*GP*GP*GP*AP*AP*GP*GP*AP*CP*CP*A)-3' Chains: P, Q
Molecule details ›
Chains: P, Q
Length: 13 nucleotides
Theoretical weight: 4.09 KDa
Source organism: Homo sapiens
Expression system: Not provided
Molecule details ›
Chains: T, U
Length: 17 nucleotides
Theoretical weight: 5.35 KDa
Source organism: Homo sapiens
Expression system: Not provided

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 17-ID
Spacegroup: C2221
Unit cell:
a: 117.136Å b: 154.476Å c: 217.854Å
α: 90° β: 90° γ: 90°
R R work R free
0.244 0.242 0.288
Expression systems:
  • Saccharomyces cerevisiae
  • Not provided