1W36

RecBCD:DNA complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of Recbcd Enzyme Reveals a Machine for Processing DNA Breaks

Singleton, M.R.Dillingham, M.S.Gaudier, M.Kowalczykowski, S.C.Wigley, D.B.

(2004) Nature 432: 187

  • DOI: 10.1038/nature02988
  • Also Cited By: 3K70

  • PubMed Abstract: 
  • RecBCD is a multi-functional enzyme complex that processes DNA ends resulting from a double-strand break. RecBCD is a bipolar helicase that splits the duplex into its component strands and digests them until encountering a recombinational hotspot (Ch ...

    RecBCD is a multi-functional enzyme complex that processes DNA ends resulting from a double-strand break. RecBCD is a bipolar helicase that splits the duplex into its component strands and digests them until encountering a recombinational hotspot (Chi site). The nuclease activity is then attenuated and RecBCD loads RecA onto the 3' tail of the DNA. Here we present the crystal structure of RecBCD bound to a DNA substrate. In this initiation complex, the DNA duplex has been split across the RecC subunit to create a fork with the separated strands each heading towards different helicase motor subunits. The strands pass along tunnels within the complex, both emerging adjacent to the nuclease domain of RecB. Passage of the 3' tail through one of these tunnels provides a mechanism for the recognition of a Chi sequence by RecC within the context of double-stranded DNA. Gating of this tunnel suggests how nuclease activity might be regulated.


    Organizational Affiliation

    Cancer Research UK Clare Hall Laboratories, The London Research Institute, Blanche Lane, South Mimms, Potters Bar, Herts. EN6 3LD, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
EXODEOXYRIBONUCLEASE V BETA CHAIN
B, E
1180Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: recB (ior, rorA)
EC: 3.1.11.5
Find proteins for P08394 (Escherichia coli (strain K12))
Go to UniProtKB:  P08394
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
EXODEOXYRIBONUCLEASE V GAMMA CHAIN
C, F
1122Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: recC
EC: 3.1.11.5
Find proteins for P07648 (Escherichia coli (strain K12))
Go to UniProtKB:  P07648
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
EXODEOXYRIBONUCLEASE V ALPHA CHAIN
D, G
608Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: recD (hopE)
EC: 3.1.11.5
Find proteins for P04993 (Escherichia coli (strain K12))
Go to UniProtKB:  P04993
Entity ID: 4
MoleculeChainsLengthOrganism
DNA HAIRPINY,Z43N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
B, E
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.296 
  • R-Value Work: 0.242 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 132.602α = 90.00
b = 187.234β = 90.00
c = 335.369γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
CNSrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-11-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance