3HTU

Crystal structure of the human VPS25-VPS20 subcomplex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and function of the ESCRT-II-III interface in multivesicular body biogenesis.

Im, Y.J.Wollert, T.Boura, E.Hurley, J.H.

(2009) Dev.Cell 17: 234-243

  • DOI: 10.1016/j.devcel.2009.07.008

  • PubMed Abstract: 
  • The ESCRT-II-ESCRT-III interaction coordinates the sorting of ubiquitinated cargo with the budding and scission of intralumenal vesicles into multivesicular bodies. The interacting regions of these complexes were mapped to the second winged helix dom ...

    The ESCRT-II-ESCRT-III interaction coordinates the sorting of ubiquitinated cargo with the budding and scission of intralumenal vesicles into multivesicular bodies. The interacting regions of these complexes were mapped to the second winged helix domain of human ESCRT-II subunit VPS25 and the first helix of ESCRT-III subunit VPS20. The crystal structure of this complex was determined at 2.0 A resolution. Residues involved in structural interactions explain the specificity of ESCRT-II for Vps20, and are critical for cargo sorting in vivo. ESCRT-II directly activates ESCRT-III-driven vesicle budding and scission in vitro via these structural interactions. VPS20 and ESCRT-II bind membranes with nanomolar affinity, explaining why binding to ESCRT-II is dispensable for the recruitment of Vps20 to membranes. Docking of the ESCRT-II-VPS20(2) supercomplex reveals a convex membrane-binding surface, suggesting a hypothesis for negative membrane curvature induction in the nascent intralumenal vesicle.


    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Vacuolar protein-sorting-associated protein 25
A, C, E, G
79Homo sapiensMutation(s): 0 
Gene Names: VPS25 (DERP9, EAP20)
Find proteins for Q9BRG1 (Homo sapiens)
Go to Gene View: VPS25
Go to UniProtKB:  Q9BRG1
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Vacuolar protein-sorting-associated protein 20
B, D, F, H
39Homo sapiensMutation(s): 0 
Gene Names: CHMP6 (VPS20)
Find proteins for Q96FZ7 (Homo sapiens)
Go to Gene View: CHMP6
Go to UniProtKB:  Q96FZ7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.239 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 58.562α = 90.00
b = 51.043β = 90.39
c = 76.987γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
REFMACrefinement
HKL-2000data scaling
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2009-06-12 
  • Released Date: 2009-08-25 
  • Deposition Author(s): Im, Y.J., Hurley, J.H.

Revision History 

  • Version 1.0: 2009-08-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance