PDBe 3m8r

X-ray diffraction
2Å resolution

Crystal structure of the large fragment of DNA polymerase I from Thermus aquaticus in a closed ternary complex with trapped 4'-ethylated dTTP

Released:
Source organism: Thermus aquaticus

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
1 distinct polypeptide molecule
2 distinct DNA molecules
Macromolecules (3 distinct):
DNA polymerase I, thermostable Chain: A
Molecule details ›
Chain: A
Length: 540 amino acids
Theoretical weight: 60.94 KDa
Source organism: Thermus aquaticus
Expression system: Escherichia coli
UniProt:
  • Canonical: P19821 (Residues: 293-832; Coverage: 65%)
Gene names: pol1, polA
Sequence domains:
Structure domains:
DNA (5'-D(*GP*AP*CP*CP*AP*CP*GP*GP*CP*GP*CP*(DOC))-3') Chain: B
Molecule details ›
Chain: B
Length: 12 nucleotides
Theoretical weight: 3.62 KDa
Source organism: Thermus aquaticus
Expression system: Not provided
DNA (5'-D(*AP*AP*AP*AP*GP*GP*CP*GP*CP*CP*GP*TP*GP*GP*TP*C)-3') Chain: C
Molecule details ›
Chain: C
Length: 16 nucleotides
Theoretical weight: 4.95 KDa
Source organism: Thermus aquaticus
Expression system: Not provided

Ligands and Environments


1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: SLS BEAMLINE X06SA
Spacegroup: P3121
Unit cell:
a: 108.789Å b: 108.789Å c: 90.52Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.182 0.18 0.221
Expression systems:
  • Escherichia coli
  • Not provided