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 

Starting Model: experimental
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This is version 1.4 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: https://doi.org/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 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)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA repair protein RAD51
A, B, C, D, E
A, B, C, D, E, F
321Saccharomyces cerevisiaeMutation(s): 1 
Gene Names: RAD51YER095W
UniProt
Find proteins for P25454 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P25454 
Go to UniProtKB:  P25454
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP25454
Sequence Annotations
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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  (Full details and data files)

  • 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
  • Version 1.3: 2021-10-27
    Changes: Database references, Derived calculations
  • Version 1.4: 2023-08-23
    Changes: Data collection, Refinement description