1REA

STRUCTURE OF THE RECA PROTEIN-ADP COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the recA protein-ADP complex.

Story, R.M.Steitz, T.A.

(1992) Nature 355: 374-376

  • DOI: 10.1038/355374a0

  • PubMed Abstract: 
  • The recA protein catalyses the ATP-driven homologous pairing and strand exchange of DNA molecules. It is an allosteric enzyme: the ATPase activity is DNA-dependent, and ATP-bound recA protein has a high affinity for DNA, whereas the ADP-bound form ha ...

    The recA protein catalyses the ATP-driven homologous pairing and strand exchange of DNA molecules. It is an allosteric enzyme: the ATPase activity is DNA-dependent, and ATP-bound recA protein has a high affinity for DNA, whereas the ADP-bound form has a low affinity. In the absence of ATP hydrolysis, recA protein can still promote homologous pairing, apparently through the formation of a triple-stranded intermediate. The exact role of ATP hydrolysis is not clear, but it presumably drives the triplex intermediate towards products. Here we determine the position of bound ADP diffused into the recA crystal. We show that only the phosphates are bound in the same way as in other NTPases containing the G/AXXXXGKT/S motif. We propose that recA protein may change its conformation upon ATP hydrolysis in a manner analogous to one such protein, the p21 protein from the ras oncogene. A model is presented to account for the allosteric stimulation of DNA binding by ATP. The mechanism by which nucleoside triphosphate hydrolysis is coupled to the binding of another ligand in recA protein and p21 may be typical of the large class of NTPases containing this conserved motif.


    Related Citations: 
    • The Structure of the E. Coli Reca Protein Monomer and Polymer
      Story, R.M.,Weber, I.T.,Steitz, T.A.
      (1992) Nature 355: 318
    • The Structure of the E. Coli Reca Protein Monomer and Polymer: Erratum
      Story, R.M.,Weber, I.T.,Steitz, T.A.
      (1992) Nature 355: 567


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06511.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
REC A
A
352Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: recA (lexB, recH, rnmB, tif, umuB, zab)
Find proteins for P0A7G6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7G6
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Work: 0.223 
  • Space Group: P 61
Unit Cell:
Length (Å)Angle (°)
a = 102.200α = 90.00
b = 102.200β = 90.00
c = 83.100γ = 120.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-05-09
    Type: Other