4LGM

Crystal Structure of Sulfolobus solfataricus Vps4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.711 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The Oligomeric State of the Active Vps4 AAA ATPase.

Monroe, N.Han, H.Gonciarz, M.D.Eckert, D.M.Karren, M.A.Whitby, F.G.Sundquist, W.I.Hill, C.P.

(2014) J.Mol.Biol. 426: 510-525

  • DOI: 10.1016/j.jmb.2013.09.043
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The cellular ESCRT (endosomal sorting complexes required for transport) pathway drives membrane constriction toward the cytosol and effects membrane fission during cytokinesis, endosomal sorting, and the release of many enveloped viruses, including t ...

    The cellular ESCRT (endosomal sorting complexes required for transport) pathway drives membrane constriction toward the cytosol and effects membrane fission during cytokinesis, endosomal sorting, and the release of many enveloped viruses, including the human immunodeficiency virus. A component of this pathway, the AAA ATPase Vps4, provides energy for pathway progression. Although it is established that Vps4 functions as an oligomer, subunit stoichiometry and other fundamental features of the functional enzyme are unclear. Here, we report that although some mutant Vps4 proteins form dodecameric assemblies, active wild-type Saccharomyces cerevisiae and Sulfolobus solfataricus Vps4 enzymes can form hexamers in the presence of ATP and ADP, as assayed by size-exclusion chromatography and equilibrium analytical ultracentrifugation. The Vta1p activator binds hexameric yeast Vps4p without changing the oligomeric state of Vps4p, implying that the active Vta1p-Vps4p complex also contains a single hexameric ring. Additionally, we report crystal structures of two different archaeal Vps4 homologs, whose structures and lattice interactions suggest a conserved mode of oligomerization. Disruption of the proposed hexamerization interface by mutagenesis abolished the ATPase activity of archaeal Vps4 proteins and blocked Vps4p function in S. cerevisiae. These data challenge the prevailing model that active Vps4 is a double-ring dodecamer, and argue that, like other type I AAA ATPases, Vps4 functions as a single ring with six subunits.


    Organizational Affiliation

    Department of Biochemistry, University of Utah School of Medicine, 15 North Medical Drive East RM 4100, Salt Lake City, UT 84112-5650, USA.,Department of Biochemistry, University of Utah School of Medicine, 15 North Medical Drive East RM 4100, Salt Lake City, UT 84112-5650, USA. Electronic address: wes@biochem.utah.edu.,Department of Biochemistry, University of Utah School of Medicine, 15 North Medical Drive East RM 4100, Salt Lake City, UT 84112-5650, USA. Electronic address: chris@biochem.utah.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Vps4 AAA ATPase
A
295Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)Mutation(s): 1 
Find proteins for Q97ZJ7 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Go to UniProtKB:  Q97ZJ7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.711 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.217 
  • Space Group: P 64
Unit Cell:
Length (Å)Angle (°)
a = 101.321α = 90.00
b = 101.321β = 90.00
c = 64.743γ = 120.00
Software Package:
Software NamePurpose
ADSCdata collection
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
SOLVEphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-06
    Type: Initial release
  • Version 1.1: 2013-11-13
    Type: Database references
  • Version 1.2: 2014-02-05
    Type: Database references
  • Version 1.3: 2015-04-22
    Type: Structure summary