4TZM

C. elegans HTP-2 bound to HTP-3 closure motif 1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.204 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

The Chromosome Axis Controls Meiotic Events through a Hierarchical Assembly of HORMA Domain Proteins.

Kim, Y., Rosenberg, S.C., Kugel, C.L., Kostow, N., Rog, O., Davydov, V., Su, T.Y., Dernburg, A.F., Corbett, K.D.

(2014) Dev Cell 31: 487-502

  • DOI: https://doi.org/10.1016/j.devcel.2014.09.013
  • Primary Citation of Related Structures:  
    4TRK, 4TZJ, 4TZL, 4TZM, 4TZN, 4TZO, 4TZQ, 4TZS

  • PubMed Abstract: 

    • Proteins of the HORMA domain family play central, but poorly understood, roles in chromosome organization and dynamics during meiosis. In Caenorhabditis elegans, four such proteins (HIM-3, HTP-1, HTP-2, and HTP-3) have distinct but overlapping functions. Through combined biochemical, structural, and in vivo analysis, we find that these proteins form hierarchical complexes through binding of their HORMA domains to cognate peptides within their partners' C-terminal tails, analogous to the "safety belt" binding mechanism of Mad2 ...

    Proteins of the HORMA domain family play central, but poorly understood, roles in chromosome organization and dynamics during meiosis. In Caenorhabditis elegans, four such proteins (HIM-3, HTP-1, HTP-2, and HTP-3) have distinct but overlapping functions. Through combined biochemical, structural, and in vivo analysis, we find that these proteins form hierarchical complexes through binding of their HORMA domains to cognate peptides within their partners' C-terminal tails, analogous to the "safety belt" binding mechanism of Mad2. These interactions are critical for recruitment of HIM-3, HTP-1, and HTP-2 to chromosome axes. HTP-3, in addition to recruiting the other HORMA domain proteins to the axis, plays an independent role in sister chromatid cohesion and double-strand break formation. Finally, we find that mammalian HORMAD1 binds a motif found both at its own C terminus and at that of HORMAD2, indicating that this mode of intermolecular association is a conserved feature of meiotic chromosome structure in eukaryotes.

    Organizational Affiliation: 

    Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, CA 92093-0660, USA; Ludwig Institute for Cancer Research, San Diego Branch, San Diego, La Jolla, CA 92093-0660, USA. Electronic address: kcorbett@ucsd.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein HTP-2
A, B
253Caenorhabditis elegansMutation(s): 0 
Gene Names: htp-2, CELE_Y73B6BL.2, Y73B6BL.2
UniProt
Find proteins for Q95XC8 (Caenorhabditis elegans)
Explore Q95XC8 
Go to UniProtKB:  Q95XC8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ95XC8
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
C. elegans HTP-3 closure motif1
C, D
16Caenorhabditis elegansMutation(s): 0 
Gene Names: htp-3, CELE_F57C9.5, F57C9.5
UniProt
Find proteins for O01820 (Caenorhabditis elegans)
Explore O01820 
Go to UniProtKB:  O01820
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO01820
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.676α = 90
b = 66.005β = 90.27
c = 94.649γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM104141

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-19
    Type: Initial release
  • Version 1.1: 2014-12-17
    Changes: Database references
  • Version 1.2: 2017-09-20
    Changes: Author supporting evidence, Derived calculations, Source and taxonomy, Structure summary
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence