4ztu

X-ray diffraction
3.3Å resolution

Structural basis for processivity and antiviral drug toxicity in human mitochondrial DNA replicase

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero pentamer (preferred)
PDBe Complex ID:
PDB-CPX-118382 (preferred)
Entry contents:
2 distinct polypeptide molecules
2 distinct DNA molecules
Macromolecules (4 distinct):
DNA polymerase subunit gamma-1 Chain: A
Molecule details ›
Chain: A
Length: 1222 amino acids
Theoretical weight: 138.04 KDa
Source organism: Homo sapiens
Expression system: Insect cell expression vector pTIE1
UniProt:
  • Canonical: P54098 (Residues: 30-1239; Coverage: 98%)
Gene names: MDP1, POLG, POLG1, POLGA
Sequence domains: DNA mitochondrial polymerase exonuclease domain
DNA polymerase subunit gamma-2 Chains: B, C
Molecule details ›
Chains: B, C
Length: 472 amino acids
Theoretical weight: 53.66 KDa
Source organism: Homo sapiens
Expression system: Insect cell expression vector pTIE1
UniProt:
  • Canonical: Q9UHN1 (Residues: 26-485; Coverage: 95%)
Gene names: MTPOLB, POLG2
Sequence domains: Anticodon binding domain
Structure domains:
DNA (25-MER) Chain: T
Molecule details ›
Chain: T
Length: 27 nucleotides
Theoretical weight: 8.24 KDa
DNA (5'-D(P*AP*AP*GP*AP*CP*GP*AP*GP*GP*GP*CP*CP*AP*GP*TP*GP*CP*CP*GP*TP*AP*C)-3') Chain: P
Molecule details ›
Chain: P
Length: 24 nucleotides
Theoretical weight: 7.42 KDa

Ligands and Environments

2 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: ALS BEAMLINE 8.2.1
Spacegroup: P41212
Unit cell:
a: 217.575Å b: 217.575Å c: 168.277Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.316 0.316 0.316
Expression system: Insect cell expression vector pTIE1