3MHV

Crystal Structure of Vps4 and Vta1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.298 
  • R-Value Observed: 0.311 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural role of the Vps4-Vta1 interface in ESCRT-III recycling

Yang, D.Hurley, J.H.

(2010) Structure 18: 976-984

  • DOI: 10.1016/j.str.2010.04.014
  • Primary Citation of Related Structures:  
    3MHV

  • PubMed Abstract: 
  • The ESCRT complexes are required for multivesicular body biogenesis, macroautophagy, cytokinesis, and the budding of HIV-1. The final step in the ESCRT cycle is the disassembly of the ESCRT-III lattice by the AAA+ ATPase Vps4. Vps4 assembles on its membrane-bound ESCRT-III substrate with its cofactor, Vta1 ...

    The ESCRT complexes are required for multivesicular body biogenesis, macroautophagy, cytokinesis, and the budding of HIV-1. The final step in the ESCRT cycle is the disassembly of the ESCRT-III lattice by the AAA+ ATPase Vps4. Vps4 assembles on its membrane-bound ESCRT-III substrate with its cofactor, Vta1. The crystal structure of the dimeric VSL domain of yeast Vta1 with the small ATPase and the betadomains of Vps4 was determined. Residues involved in structural interactions are conserved and are required for binding in vitro and for Cps1 sorting in vivo. Modeling of the Vta1 complex in complex with the lower hexameric ring of Vps4 indicates that the two-fold axis of the Vta1 VSL domain is parallel to within approximately 20 degrees of the six-fold axis of the hexamer. This suggests that Vta1 might not crosslink the two hexameric rings of Vps4, but rather stabilizes an array of Vps4-Vta1 complexes for ESCRT-III disassembly.


    Organizational Affiliation

    Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, MD 20892, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Vacuolar protein sorting-associated protein 4A [auth C]117Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: VPS4
UniProt
Find proteins for P52917 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P52917 
Go to UniProtKB:  P52917
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP52917
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Vacuolar protein sorting-associated protein VTA1B [auth A]42Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: VTA1
UniProt
Find proteins for Q06263 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q06263 
Go to UniProtKB:  Q06263
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ06263
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.317 
  • R-Value Work: 0.298 
  • R-Value Observed: 0.311 
  • Space Group: P 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.979α = 90
b = 70.322β = 90
c = 88.839γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
PHASERphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-10-06
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance