2MH2

Structural insights into the DNA recognition and protein interaction domains reveal fundamental homologous DNA pairing properties of HOP2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 40000 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Solution Structure and DNA-binding Properties of the Winged Helix Domain of the Meiotic Recombination HOP2 Protein.

Moktan, H.Guiraldelli, M.F.Eyster, C.A.Zhao, W.Lee, C.Y.Mather, T.Camerini-Otero, R.D.Sung, P.Zhou, D.H.Pezza, R.J.

(2014) J Biol Chem 289: 14682-14691

  • DOI: 10.1074/jbc.M114.548180
  • Primary Citation of Related Structures:  
    2MH2

  • PubMed Abstract: 
  • The HOP2 protein is required for efficient double-strand break repair which ensures the proper synapsis of homologous chromosomes and normal meiotic progression. We previously showed that in vitro HOP2 shows two distinctive activities: when it is incorporated into a HOP2-MND1 heterodimer, it stimulates DMC1 and RAD51 recombination activities, and the purified HOP2 alone is proficient in promoting strand invasion ...

    The HOP2 protein is required for efficient double-strand break repair which ensures the proper synapsis of homologous chromosomes and normal meiotic progression. We previously showed that in vitro HOP2 shows two distinctive activities: when it is incorporated into a HOP2-MND1 heterodimer, it stimulates DMC1 and RAD51 recombination activities, and the purified HOP2 alone is proficient in promoting strand invasion. The structural and biochemical basis of HOP2 action in recombination are poorly understood; therefore, they are the focus of this work. Herein, we present the solution structure of the amino-terminal portion of mouse HOP2, which contains a typical winged helix DNA-binding domain. Together with NMR spectral changes in the presence of double-stranded DNA, protein docking on DNA, and mutation analysis to identify the amino acids involved in DNA coordination, our results on the three-dimensional structure of HOP2 provide key information on the fundamental structural and biochemical requirements directing the interaction of HOP2 with DNA. These results, in combination with mutational experiments showing the role of a coiled-coil structural feature involved in HOP2 self-association, allow us to explain important aspects of the function of HOP2 in recombination.


    Organizational Affiliation

    the Cell Cycle and Cancer Biology Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma 73104, the Department of Cell Biology, Oklahoma University Health Science Center, Oklahoma City, Oklahoma 73126 Roberto-Pezza@omrf.org.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Homologous-pairing protein 2 homologA84Mus musculusMutation(s): 0 
Gene Names: Hop2Psmc3ipTbpip
UniProt
Find proteins for O35047 (Mus musculus)
Explore O35047 
Go to UniProtKB:  O35047
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO35047
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 40000 
  • Conformers Submitted: 20 
  • Selection Criteria: back calculated data agree with experimental NOESY spectrum 
  • OLDERADO: 2MH2 Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-04-16
    Type: Initial release
  • Version 1.1: 2014-08-06
    Changes: Database references