Crystal Structure of S.cerevisiae Vta1 C-terminal domain

Experimental Data Snapshot

  • Resolution: 1.50 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 

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This is version 1.3 of the entry. See complete history


Structural basis of vta1 function in the multivesicular body sorting pathway.

Xiao, J.Xia, H.Zhou, J.Azmi, I.F.Davies, B.A.Katzmann, D.J.Xu, Z.

(2008) Dev Cell 14: 37-49

  • DOI: https://doi.org/10.1016/j.devcel.2007.10.013
  • Primary Citation of Related Structures:  
    2RKK, 2RKL

  • PubMed Abstract: 

    The MVB pathway plays essential roles in several eukaryotic cellular processes. Proper function of the MVB pathway requires reversible membrane association of the ESCRTs, a process catalyzed by Vps4 ATPase. Vta1 regulates the Vps4 activity, but its mechanism of action was poorly understood. We report the high-resolution crystal structures of the Did2- and Vps60-binding N-terminal domain and the Vps4-binding C-terminal domain of S. cerevisiae Vta1. The C-terminal domain also mediates Vta1 dimerization and both subunits are required for its function as a Vps4 regulator. Emerging from our analysis is a mechanism of regulation by Vta1 in which the C-terminal domain stabilizes the ATP-dependent double ring assembly of Vps4. In addition, the MIT motif-containing N-terminal domain, projected by a long disordered linker, allows contact between the Vps4 disassembly machinery and the accessory ESCRT-III proteins. This provides an additional level of regulation and coordination for ESCRT-III assembly and disassembly.

  • Organizational Affiliation

    Life Sciences Institute and Department of Biological Chemistry, Medical School, University of Michigan, Ann Arbor, MI 48109, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Vacuolar protein sorting-associated protein VTA1
A, B, C, D, E
A, B, C, D, E, F
53Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: VTA1
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
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on MPD

Download Ideal Coordinates CCD File 
C6 H14 O2
Experimental Data & Validation

Experimental Data

  • Resolution: 1.50 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.42α = 90
b = 50.707β = 90
c = 74.353γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-01-22
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2024-02-21
    Changes: Data collection, Database references, Derived calculations