7mr4

Electron Microscopy
4.5Å resolution

Cryo-EM structure of RecBCD-DNA complex with undocked RecBNuc and flexible RecD

Released:
Source organism: Escherichia coli K-12
Primary publication:
Heterogeneity in E. coli RecBCD Helicase-DNA Binding and Base Pair Melting.
J Mol Biol 433 167147 (2021)
PMID: 34246654
Related structures: EMD-23956

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero pentamer (preferred)
PDBe Complex ID:
PDB-CPX-121656 (preferred)
Entry contents:
3 distinct polypeptide molecules
2 distinct DNA molecules
Macromolecules (5 distinct):
RecBCD enzyme subunit RecB Chain: B
Molecule details ›
Chain: B
Length: 1180 amino acids
Theoretical weight: 134.11 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P08394 (Residues: 1-1180; Coverage: 100%)
Gene names: JW2788, b2820, ior, recB, rorA
Sequence domains:
RecBCD enzyme subunit RecC Chain: C
Molecule details ›
Chain: C
Length: 1122 amino acids
Theoretical weight: 128.97 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P07648 (Residues: 1-1122; Coverage: 100%)
Gene names: JW2790, b2822, recC
Sequence domains:
RecBCD enzyme subunit RecD Chain: D
Molecule details ›
Chain: D
Length: 608 amino acids
Theoretical weight: 66.99 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli
UniProt:
  • Canonical: P04993 (Residues: 1-608; Coverage: 100%)
Gene names: JW2787, b2819, hopE, recD
Sequence domains:
DNA (60-MER) Chain: X
Molecule details ›
Chain: X
Length: 60 nucleotides
Theoretical weight: 18.48 KDa
DNA (60-MER) Chain: A
Molecule details ›
Chain: A
Length: 60 nucleotides
Theoretical weight: 18.5 KDa

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
Resolution: 4.5Å
Relevant EMDB volumes: EMD-23956
Expression system: Escherichia coli