PDBe 1mmi

X-ray diffraction
1.85Å resolution

E. COLI DNA POLYMERASE BETA SUBUNIT

Released:

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:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Beta sliding clamp Chains: A, B
Molecule details ›
Chains: A, B
Length: 366 amino acids
Theoretical weight: 40.63 KDa
Source organism: Escherichia coli
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A988 (Residues: 1-366; Coverage: 100%)
Gene names: JW3678, b3701, dnaN
Sequence domains:
Structure domains: DNA Polymerase III, subunit A, domain 2

Ligands and Environments

No bound ligands

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 14-BM-C
Spacegroup: P21
Unit cell:
a: 80.012Å b: 66.595Å c: 80.779Å
α: 90° β: 114.02° γ: 90°
R-values:
R R work R free
0.191 0.188 0.245
Expression system: Escherichia coli