2XZE

Structural basis for AMSH-ESCRT-III CHMP3 interaction


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural Basis for Escrt-III Chmp3 Recruitment of Amsh.

Solomons, J.Sabin, C.Poudevigne, E.Usami, Y.Hulsik, D.L.Macheboeuf, P.Hartlieb, B.Gottlinger, H.Weissenhorn, W.

(2011) Structure 19: 1149

  • DOI: 10.1016/j.str.2011.05.011

  • PubMed Abstract: 
  • Endosomal sorting complexes required for transport (ESCRT) recognize ubiquitinated cargo and catalyze diverse budding processes including multivesicular body biogenesis, enveloped virus egress, and cytokinesis. We present the crystal structure of an ...

    Endosomal sorting complexes required for transport (ESCRT) recognize ubiquitinated cargo and catalyze diverse budding processes including multivesicular body biogenesis, enveloped virus egress, and cytokinesis. We present the crystal structure of an N-terminal fragment of the deubiquitinating enzyme AMSH (AMSHΔC) in complex with the C-terminal region of ESCRT-III CHMP3 (CHMP3ΔN). AMSHΔC folds into an elongated 90 Å long helical assembly that includes an unusual MIT domain. CHMP3ΔN is unstructured in solution and helical in complex with AMSHΔC, revealing a novel MIT domain interacting motif (MIM) that does not overlap with the CHMP1-AMSH binding site. ITC and SPR measurements demonstrate an unusual high-affinity MIM-MIT interaction. Structural analysis suggests a regulatory role for the N-terminal helical segment of AMSHΔC and its destabilization leads to a loss of function during HIV-1 budding. Our results indicate a tight coupling of ESCRT-III CHMP3 and AMSH functions and provide insight into the regulation of ESCRT-III.


    Related Citations: 
    • Structural Basis for Autoinhibition of Escrt-III Chmp3.
      Lata, S.,Roessle, M.,Solomons, J.,Jamin, M.,Gottlinger, H.G.,Svergun, D.I.,Weissenhorn, W.
      (2008) J.Mol.Biol. 378: 818


    Organizational Affiliation

    Unit of Virus Host Cell Interactions (UVHCI) UMI 3265 Université Joseph Fourier-EMBL-CNRS, 6 rue Jules Horowitz 38042 Grenoble Cedex 9, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
STAM-BINDING PROTEIN
A, B
146Homo sapiensMutation(s): 0 
Gene Names: STAMBP (AMSH)
EC: 3.4.19.-
Find proteins for O95630 (Homo sapiens)
Go to Gene View: STAMBP
Go to UniProtKB:  O95630
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CHARGED MULTIVESICULAR BODY PROTEIN 3
Q, R
40Homo sapiensMutation(s): 0 
Gene Names: CHMP3 (CGI149, NEDF, VPS24)
Find proteins for Q9Y3E7 (Homo sapiens)
Go to Gene View: CHMP3
Go to UniProtKB:  Q9Y3E7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.192 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 45.970α = 90.00
b = 45.970β = 90.00
c = 206.910γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
REFMACrefinement
SCALAdata scaling
Auto-Rickshawphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-24
    Type: Initial release