1SZP

A Crystal Structure of the Rad51 Filament


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.273 

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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of a Rad51 filament.

Conway, A.B.Lynch, T.W.Zhang, Y.Fortin, G.S.Fung, C.W.Symington, L.S.Rice, P.A.

(2004) Nat Struct Mol Biol 11: 791-796

  • DOI: 10.1038/nsmb795
  • Primary Citation of Related Structures:  
    1SZP

  • PubMed Abstract: 
  • Rad51, the major eukaryotic homologous recombinase, is important for the repair of DNA damage and the maintenance of genomic diversity and stability. The active form of this DNA-dependent ATPase is a helical filament within which the search for homol ...

    Rad51, the major eukaryotic homologous recombinase, is important for the repair of DNA damage and the maintenance of genomic diversity and stability. The active form of this DNA-dependent ATPase is a helical filament within which the search for homology and strand exchange occurs. Here we present the crystal structure of a Saccharomyces cerevisiae Rad51 filament formed by a gain-of-function mutant. This filament has a longer pitch than that seen in crystals of Rad51's prokaryotic homolog RecA, and places the ATPase site directly at a new interface between protomers. Although the filament exhibits approximate six-fold symmetry, alternate protein-protein interfaces are slightly different, implying that the functional unit of Rad51 within the filament may be a dimer. Additionally, we show that mutation of His352, which lies at this new interface, markedly disrupts DNA binding.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, The University of Chicago, 920 East 58th Street, Chicago, Illinois 60637, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA repair protein RAD51ABCDEF321Saccharomyces cerevisiaeMutation(s): 1 
Gene Names: RAD51YER095W
Find proteins for P25454 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P25454 
Go to UniProtKB:  P25454
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.273 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 135.262α = 90
b = 135.262β = 90
c = 128.887γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
EPMRphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-07-13
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance