Function and Biology

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

Source organism: Escherichia coli K-12
Biochemical function: exodeoxyribonuclease V activity
Biological process: DNA duplex unwinding
Cellular component: exodeoxyribonuclease V complex

EC 3.1.11.5: Exodeoxyribonuclease V

Reaction catalysed:
Exonucleolytic cleavage (in the presence of ATP) in either 5'- to 3'- or 3'- to 5'-direction to yield 5'-phosphooligonucleotides
Alternative Name(s):
  • E. coli exonuclease V
  • E.coli exonuclease V
  • Escherichia coli exonuclease V
  • Exonuclease V
  • Gene recBC DNase
  • Gene recBC endoenzyme
  • Gene recBCD enzymes
  • RecBC deoxyribonuclease

Sequence families

Pfam Protein families (Pfam)
PF13538
Domain description: UvrD-like helicase C-terminal domain
Occurring in:
  1. RecBCD enzyme subunit RecD
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF13538 (UvrD-like helicase C-terminal domain) in RecBCD enzyme subunit RecD. Showing 1 copy in chain C [auth D] (this domain is out of the observed residue ranges!).

PF13245
Domain description: AAA domain
Occurring in:
  1. RecBCD enzyme subunit RecD
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF13245 (AAA domain) in RecBCD enzyme subunit RecD. Showing 1 copy in chain C [auth D] (this domain is out of the observed residue ranges!).

PF21185
Domain description: RecBCD enzyme subunit RecD, N-terminal domain
Occurring in:
  1. RecBCD enzyme subunit RecD
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF21185 (RecBCD enzyme subunit RecD, N-terminal domain) in RecBCD enzyme subunit RecD. Showing 1 copy in chain C [auth D].

PF17946
Domain description: RecC C-terminal domain
Occurring in:
  1. RecBCD enzyme subunit RecC
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF17946 (RecC C-terminal domain) in RecBCD enzyme subunit RecC. Showing 1 copy in chain B [auth C].

PF04257
Domain description: Exodeoxyribonuclease V, gamma subunit
Occurring in:
  1. RecBCD enzyme subunit RecC
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF04257 (Exodeoxyribonuclease V, gamma subunit ) in RecBCD enzyme subunit RecC. Showing 1 copy in chain B [auth C].

PF12705
Domain description: PD-(D/E)XK nuclease superfamily
Occurring in:
  1. RecBCD enzyme subunit RecB
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF12705 (PD-(D/E)XK nuclease superfamily) in RecBCD enzyme subunit RecB. Showing 1 copy in chain A [auth B] (this domain is out of the observed residue ranges!).

PF13361
Domain description: UvrD-like helicase C-terminal domain
Occurring in:
  1. RecBCD enzyme subunit RecB
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF13361 (UvrD-like helicase C-terminal domain) in RecBCD enzyme subunit RecB. Showing 1 copy in chain A [auth B].

PF00580
Domain description: UvrD/REP helicase N-terminal domain
Occurring in:
  1. RecBCD enzyme subunit RecB
The deposited structure of PDB entry 7mr2 contains 1 copy of Pfam domain PF00580 (UvrD/REP helicase N-terminal domain) in RecBCD enzyme subunit RecB. Showing 1 copy in chain A [auth B].

InterPro InterPro annotations
IPR027417
Domain description: P-loop containing nucleoside triphosphate hydrolase
Occurring in:
  1. RecBCD enzyme subunit RecB
  2. RecBCD enzyme subunit RecC
  3. RecBCD enzyme subunit RecD
IPR014017
Domain description: UvrD-like DNA helicase, C-terminal
Occurring in:
  1. RecBCD enzyme subunit RecB
IPR006344
Domain description: RecBCD enzyme subunit RecD
Occurring in:
  1. RecBCD enzyme subunit RecD
IPR006697
Domain description: RecBCD enzyme subunit RecC
Occurring in:
  1. RecBCD enzyme subunit RecC
IPR011335
Domain description: Restriction endonuclease type II-like
Occurring in:
  1. RecBCD enzyme subunit RecB
  2. RecBCD enzyme subunit RecC
IPR004586
Domain description: RecBCD enzyme subunit RecB
Occurring in:
  1. RecBCD enzyme subunit RecB
IPR014016
Domain description: UvrD-like helicase, ATP-binding domain
Occurring in:
  1. RecBCD enzyme subunit RecB
IPR027785
Domain description: UvrD-like helicase C-terminal domain
Occurring in:
  1. RecBCD enzyme subunit RecD
IPR003593
Domain description: AAA+ ATPase domain
Occurring in:
  1. RecBCD enzyme subunit RecD
IPR041851
Domain description: RecBCD enzyme subunit RecD, N-terminal domain superfamily
Occurring in:
  1. RecBCD enzyme subunit RecD
IPR041500
Domain description: RecC, C-terminal
Occurring in:
  1. RecBCD enzyme subunit RecC
IPR013986
Domain description: DExx box DNA helicase domain superfamily
Occurring in:
  1. RecBCD enzyme subunit RecC
IPR038726
Domain description: PD-(D/E)XK endonuclease-like domain, AddAB-type
Occurring in:
  1. RecBCD enzyme subunit RecB
IPR011604
Domain description: PD-(D/E)XK endonuclease-like domain superfamily
Occurring in:
  1. RecBCD enzyme subunit RecB
IPR000212
Domain description: DNA helicase, UvrD/REP type
Occurring in:
  1. RecBCD enzyme subunit RecB