6n9v

Electron Microscopy
4Å resolution

Structure of bacteriophage T7 lagging-strand DNA polymerase (D5A/E7A) and gp4 (helicase/primase) bound to DNA including RNA/DNA hybrid, and an incoming dTTP (LagS1)

Released:
Source organism: Escherichia phage T7
Primary publication:
Structures and operating principles of the replisome.
Science 363 (2019)
PMID: 30679383
Related structures: EMD-0380

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero nonamer (preferred)
PDBe Complex ID:
PDB-CPX-120327 (preferred)
Entry contents:
2 distinct polypeptide molecules
1 distinct DNA molecule
1 distinct RNA molecule
Macromolecules (4 distinct):
DNA helicase/primase Chains: A, B, C, D, E, F
Molecule details ›
Chains: A, B, C, D, E, F
Length: 566 amino acids
Theoretical weight: 62.73 KDa
Source organism: Escherichia phage T7
Expression system: Escherichia coli
UniProt:
  • Canonical: P03692 (Residues: 1-566; Coverage: 100%)
Gene name: 4
Sequence domains:
DNA-directed DNA polymerase Chain: H
Molecule details ›
Chain: H
Length: 704 amino acids
Theoretical weight: 79.7 KDa
Source organism: Escherichia phage T7
Expression system: Escherichia coli
UniProt:
  • Canonical: P00581 (Residues: 1-704; Coverage: 100%)
Gene name: 5
Sequence domains: DNA polymerase family A
Template Chain: T
Molecule details ›
Chain: T
Length: 44 nucleotides
Theoretical weight: 13.4 KDa
Primer Chain: P
Molecule details ›
Chain: P
Length: 6 nucleotides
Theoretical weight: 1.84 KDa

Ligands and Environments

3 bound ligands:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
Resolution:
Relevant EMDB volumes: EMD-0380
Expression system: Escherichia coli