2ZJB

Crystal structure of the human Dmc1-M200V polymorphic variant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.351 
  • R-Value Work: 0.294 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural and functional analyses of the DMC1-M200V polymorphism found in the human population

Hikiba, J.Hirota, K.Kagawa, W.Ikawa, S.Kinebuchi, T.Sakane, I.Takizawa, Y.Yokoyama, S.Mandon-Pepin, B.Nicolas, A.Shibata, T.Ohta, K.Kurumizaka, H.

(2008) Nucleic Acids Res. 36: 4181-4190

  • DOI: 10.1093/nar/gkn362

  • PubMed Abstract: 
  • The M200V polymorphism of the human DMC1 protein, which is an essential, meiosis-specific DNA recombinase, was found in an infertile patient, raising the question of whether this homozygous human DMC1-M200V polymorphism may cause infertility by affec ...

    The M200V polymorphism of the human DMC1 protein, which is an essential, meiosis-specific DNA recombinase, was found in an infertile patient, raising the question of whether this homozygous human DMC1-M200V polymorphism may cause infertility by affecting the function of the human DMC1 protein. In the present study, we determined the crystal structure of the human DMC1-M200V variant in the octameric-ring form. Biochemical analyses revealed that the human DMC1-M200V variant had reduced stability, and was moderately defective in catalyzing in vitro recombination reactions. The corresponding M194V mutation introduced in the Schizosaccharomyces pombe dmc1 gene caused a significant decrease in the meiotic homologous recombination frequency. Together, these structural, biochemical and genetic results provide extensive evidence that the human DMC1-M200V mutation impairs its function, supporting the previous interpretation that this single-nucleotide polymorphism is a source of human infertility.


    Organizational Affiliation

    Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Meiotic recombination protein DMC1/LIM15 homolog
A, B
343Homo 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: 3.5 Å
  • R-Value Free: 0.351 
  • R-Value Work: 0.294 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 124.089α = 90.00
b = 124.089β = 90.00
c = 217.870γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
MOLREPphasing
HKL-2000data scaling
HKL-2000data collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance