X-ray diffraction
2.3Å resolution

Crystal structure of a salicylic aldehyde basepair in complex with fragment DNA polymerase I from Bacillus stearothermophilus


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: 581 amino acids
Theoretical weight: 66.32 KDa
Source organism: Geobacillus stearothermophilus
Expression system: Escherichia coli BL21(DE3)
  • Canonical: E1C9K5 (Residues: 1-580; Coverage: 100%)
Gene name: polA
Sequence domains: DNA polymerase family A
Structure domains:
5'-D(*GP*AP*CP*CP*SAYP*TP*CP*CP*CP*TP)-3' Chain: B
Molecule details ›
Chain: B
Length: 10 nucleotides
Theoretical weight: 2.95 KDa
Source organism: synthetic construct
Expression system: Not provided
5'-D(*AP*GP*GP*GP*AP*SAYP*GP*GP*TP*CP)-3' Chain: C
Molecule details ›
Chain: C
Length: 10 nucleotides
Theoretical weight: 3.12 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: SLS BEAMLINE X10SA
Spacegroup: P212121
Unit cell:
a: 88.235Å b: 93.127Å c: 105.505Å
α: 90° β: 90° γ: 90°
R R work R free
0.215 0.213 0.254
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided