4HYY

Filament of octameric rings of DMC1 recombinase from Homo sapiens


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.603 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.0 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 69: 382-386

  • DOI: 10.1107/S1744309113005678

  • 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 h ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Meiotic recombination protein DMC1/LIM15 homolog
A, B, C, D
265Homo sapiensMutation(s): 0 
Gene Names: DMC1 (DMC1H, LIM15)
Find proteins for Q14565 (Homo sapiens)
Go to Gene View: DMC1
Go to UniProtKB:  Q14565
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.603 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.179 
  • Space Group: P 4
Unit Cell:
Length (Å)Angle (°)
a = 123.997α = 90.00
b = 123.997β = 90.00
c = 91.713γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
MxDCdata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-11-14 
  • Released Date: 2013-04-10 
  • Deposition Author(s): Du, L., Luo, Y.

Revision History 

  • Version 1.0: 2013-04-10
    Type: Initial release