X-ray diffraction
2.06Å resolution

Ternary complex of Y-family DNA polymerase Dpo4 with (5'S)-8,5'-Cyclo-2'-deoxyguanosine and dCTP


Function and Biology Details

Reaction catalysed:
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
DNA polymerase IV Chains: A, B
Molecule details ›
Chains: A, B
Length: 358 amino acids
Theoretical weight: 41.09 KDa
Source organism: Saccharolobus solfataricus P2
Expression system: Escherichia coli
  • Canonical: Q97W02 (Residues: 1-352; Coverage: 100%)
Gene names: SSO2448, dbh, dpo4
Sequence domains:
Structure domains:
DNA (5'-D(*GP*GP*GP*GP*GP*AP*AP*GP*GP*AP*TP*T)-3') Chains: C, P
Molecule details ›
Chains: C, P
Length: 12 nucleotides
Theoretical weight: 3.81 KDa
Source organism: synthetic construct
Expression system: Not provided
Molecule details ›
Chains: D, T
Length: 18 nucleotides
Theoretical weight: 5.37 KDa
Source organism: synthetic construct
Expression system: Not provided

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 21-ID-F
Spacegroup: P21
Unit cell:
a: 52.12Å b: 184.242Å c: 52.124Å
α: 90° β: 110.09° γ: 90°
R R work R free
0.231 0.228 0.29
Expression systems:
  • Escherichia coli
  • Not provided