4HYY

Filament of octameric rings of DMC1 recombinase from Homo sapiens


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.182 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of a filament of stacked octamers of human DMC1 recombinase.

Du, L.Luo, Y.

(2013) Acta Crystallogr Sect F Struct Biol Cryst Commun 69: 382-386

  • DOI: https://doi.org/10.1107/S1744309113005678
  • Primary Citation of Related Structures:  
    4HYY

  • PubMed Abstract: 

    Eukaryal DMC1 proteins play a central role in homologous recombination in meiosis by assembling at the sites of programmed DNA double-strand breaks and carrying out a search for allelic DNA sequences located on homologous chromatids. They are close homologs of eukaryal Rad51 and archaeal RadA proteins and are remote homologs of bacterial RecA proteins. These recombinases (also called DNA strand-exchange proteins) promote a pivotal strand-exchange reaction between homologous single-stranded and double-stranded DNA substrates. An octameric form of a truncated human DMC1 devoid of its small N-terminal domain (residues 1-83) has been crystallized. The structure of the truncated DMC1 octamer is similar to that of the previously reported full-length DMC1 octamer, which has disordered N-terminal domains. In each protomer, only the ATP cap regions (Asp317-Glu323) show a noticeable conformational difference. The truncated DMC1 octamers further stack with alternate polarity into a filament. Similar filamentous assemblies of DMC1 have been observed to form on DNA by electron microscopy.


  • Organizational Affiliation

    Department of Biochemistry, University of Saskatchewan, 107 Wiggins Road Suite A3, Saskatoon, Sasktchewan S7N 5E5, Canada.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Meiotic recombination protein DMC1/LIM15 homolog
A, B, C, D
265Homo sapiensMutation(s): 0 
Gene Names: DMC1DMC1HLIM15
UniProt & NIH Common Fund Data Resources
Find proteins for Q14565 (Homo sapiens)
Explore Q14565 
Go to UniProtKB:  Q14565
PHAROS:  Q14565
GTEx:  ENSG00000100206 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14565
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.182 
  • Space Group: P 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.997α = 90
b = 123.997β = 90
c = 91.713γ = 90
Software Package:
Software NamePurpose
MxDCdata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 2013-04-10 
  • Deposition Author(s): Du, L., Luo, Y.

Revision History  (Full details and data files)

  • Version 1.0: 2013-04-10
    Type: Initial release
  • Version 1.1: 2023-09-20
    Changes: Data collection, Database references, Refinement description