4b9v

X-ray diffraction
2Å resolution

Structure of the high fidelity DNA polymerase I with extending from an oxidative formamidopyrimidine-dG DNA lesion -dA basepair.

Released:

Function and Biology Details

Reaction catalysed:
Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1)
Biochemical function:
Biological process:
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 I Chain: A
Molecule details ›
Chain: A
Length: 619 amino acids
Theoretical weight: 70.45 KDa
Source organism: Geobacillus stearothermophilus
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: E1C9K5 (Residues: 1-580; Coverage: 100%)
Gene name: polA
Sequence domains: DNA polymerase family A
Structure domains:
5'-D(*CP*CP*TP*GP*AP*CP*TP*CP*TP*AP*AP)-3' Chain: B
Molecule details ›
Chain: B
Length: 11 nucleotides
Theoretical weight: 3.29 KDa
Source organism: Geobacillus stearothermophilus
Expression system: Not provided
5'-D(*CP*AP*TP*FOXP*AP*GP*AP*GP*TP*CP*AP*GP*GP*CP*TP)-3' Chain: C
Molecule details ›
Chain: C
Length: 15 nucleotides
Theoretical weight: 4.65 KDa
Source organism: Geobacillus stearothermophilus
Expression system: Not provided

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06SA
Spacegroup: P212121
Unit cell:
a: 87.901Å b: 94.035Å c: 105.341Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.188 0.187 0.215
Expression systems:
  • Escherichia coli BL21
  • Not provided