PDBe 4yr3

X-ray diffraction
2Å resolution

Mutant Human DNA Polymerase Eta R61M Inserting dCTP Opposite Template G


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 eta Chain: A
Molecule details ›
Chain: A
Length: 435 amino acids
Theoretical weight: 48.59 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli 'BL21-Gold(DE3)pLysS AG'
  • Canonical: Q9Y253 (Residues: 1-432; Coverage: 61%)
Gene names: POLH, RAD30, RAD30A, XPV
Sequence domains: impB/mucB/samB family
DNA (5'-D(*AP*GP*CP*GP*TP*CP*AP*T)-3') Chain: P
Molecule details ›
Chain: P
Length: 8 nucleotides
Theoretical weight: 2.43 KDa
Source organism: synthetic construct
Expression system: Not provided
DNA (5'-D(P*TP*GP*AP*TP*GP*AP*CP*GP*CP*T)-3') Chain: T
Molecule details ›
Chain: T
Length: 12 nucleotides
Theoretical weight: 3.66 KDa
Source organism: synthetic construct
Expression system: Not provided

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 21-ID-G
Spacegroup: P61
Unit cell:
a: 98.71Å b: 98.71Å c: 81.953Å
α: 90° β: 90° γ: 120°
R R work R free
0.178 0.176 0.219
Expression systems:
  • Escherichia coli 'BL21-Gold(DE3)pLysS AG'
  • Not provided