1B22

RAD51 (N-TERMINAL DOMAIN)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 140 
  • Conformers Submitted: 30 
  • Selection Criteria: LEAST TARGET FUNCTION VALUES 

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This is version 1.2 of the entry. See complete history

Literature

The N-terminal domain of the human Rad51 protein binds DNA: structure and a DNA binding surface as revealed by NMR.

Aihara, H.Ito, Y.Kurumizaka, H.Yokoyama, S.Shibata, T.

(1999) J.Mol.Biol. 290: 495-504

  • DOI: 10.1006/jmbi.1999.2904

  • PubMed Abstract: 
  • Human Rad51 protein (HsRad51) is a homolog of Escherichia coli RecA protein, and functions in DNA repair and recombination. In higher eukaryotes, Rad51 protein is essential for cell viability. The N-terminal region of HsRad51 is highly conserved amon ...

    Human Rad51 protein (HsRad51) is a homolog of Escherichia coli RecA protein, and functions in DNA repair and recombination. In higher eukaryotes, Rad51 protein is essential for cell viability. The N-terminal region of HsRad51 is highly conserved among eukaryotic Rad51 proteins but is absent from RecA, suggesting a Rad51-specific function for this region. Here, we have determined the structure of the N-terminal part of HsRad51 by NMR spectroscopy. The N-terminal region forms a compact domain consisting of five short helices, which shares structural similarity with a domain of endonuclease III, a DNA repair enzyme of E. coli. NMR experiments did not support the involvement of the N-terminal domain in HsRad51-HsBrca2 interaction or the self-association of HsRad51 as proposed by previous studies. However, NMR tiration experiments demonstrated a physical interaction of the domain with DNA, and allowed mapping of the DNA binding surface. Mutation analysis showed that the DNA binding surface is essential for double-stranded and single-stranded DNA binding of HsRad51. Our results suggest the presence of a DNA binding site on the outside surface of the HsRad51 filament and provide a possible explanation for the regulation of DNA binding by phosphorylation within the N-terminal domain.


    Organizational Affiliation

    Cellular & Molecular Biology Laboratory, The Institute of Physical and Chemical Research (RIKEN), 2-1 Hirosawa, Wako-shi, Saitama, 351-0198, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA REPAIR PROTEIN RAD51
A
114Homo sapiensGene Names: RAD51 (RAD51A, RECA)
Find proteins for Q06609 (Homo sapiens)
Go to Gene View: RAD51
Go to UniProtKB:  Q06609
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 140 
  • Conformers Submitted: 30 
  • Selection Criteria: LEAST TARGET FUNCTION VALUES 
  • Olderado: 1B22 Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-12-03
    Type: Initial release
  • Version 1.1: 2008-04-26
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance