5V3R

CHMP4C in complex with ALIX BRO1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.906 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A cancer-associated polymorphism in ESCRT-III disrupts the abscission checkpoint and promotes genome instability.

Sadler, J.B.A.Wenzel, D.M.Williams, L.K.Guindo-Martinez, M.Alam, S.L.Mercader, J.M.Torrents, D.Ullman, K.S.Sundquist, W.I.Martin-Serrano, J.

(2018) Proc. Natl. Acad. Sci. U.S.A. 115: E8900-E8908

  • DOI: 10.1073/pnas.1805504115
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cytokinetic abscission facilitates the irreversible separation of daughter cells. This process requires the endosomal-sorting complexes required for transport (ESCRT) machinery and is tightly regulated by charged multivesicular body protein 4C (CHMP4 ...

    Cytokinetic abscission facilitates the irreversible separation of daughter cells. This process requires the endosomal-sorting complexes required for transport (ESCRT) machinery and is tightly regulated by charged multivesicular body protein 4C (CHMP4C), an ESCRT-III subunit that engages the abscission checkpoint (NoCut) in response to mitotic problems such as persisting chromatin bridges within the midbody. Importantly, a human polymorphism in CHMP4C (rs35094336, CHMP4C T232 ) increases cancer susceptibility. Here, we explain the structural and functional basis for this cancer association: The CHMP4C T232 allele unwinds the C-terminal helix of CHMP4C, impairs binding to the early-acting ESCRT factor ALIX, and disrupts the abscission checkpoint. Cells expressing CHMP4C T232 exhibit increased levels of DNA damage and are sensitized to several conditions that increase chromosome missegregation, including DNA replication stress, inhibition of the mitotic checkpoint, and loss of p53. Our data demonstrate the biological importance of the abscission checkpoint and suggest that dysregulation of abscission by CHMP4C T232 may synergize with oncogene-induced mitotic stress to promote genomic instability and tumorigenesis.


    Organizational Affiliation

    Department of Oncological Sciences, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT 84112.,Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112.,Department of Infectious Diseases, Faculty of Life Sciences and Medicine, King's College London, SE1 9RT London, United Kingdom; wes@biochem.utah.edu juan.martin_serrano@kcl.ac.uk.,Program in Medical and Population Genetics, Broad Institute of Harvard and MIT, Cambridge, MA 02142.,Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114.,Instituci├│ Catalana de Recerca i Estudis Avan├žats, 08010 Barcelona, Spain.,Diabetes Unit, Massachusetts General Hospital, Boston, MA 02114.,Joint Barcelona Supercomputing Center-Centre for Genomic Regulation-Institute for Research in Biomedicine Research Program in Computational Biology, Barcelona Supercomputing Center, 08034 Barcelona, Spain.,Department of Infectious Diseases, Faculty of Life Sciences and Medicine, King's College London, SE1 9RT London, United Kingdom.,Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112; wes@biochem.utah.edu juan.martin_serrano@kcl.ac.uk.,Program in Metabolism, Broad Institute of Harvard and MIT, Cambridge, MA 02142.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Programmed cell death 6-interacting protein
A
380Homo sapiensMutation(s): 0 
Gene Names: PDCD6IP (AIP1, ALIX, KIAA1375)
Find proteins for Q8WUM4 (Homo sapiens)
Go to Gene View: PDCD6IP
Go to UniProtKB:  Q8WUM4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Charged multivesicular body protein 4c
B
18Homo sapiensMutation(s): 0 
Gene Names: CHMP4C (SHAX3)
Find proteins for Q96CF2 (Homo sapiens)
Go to Gene View: CHMP4C
Go to UniProtKB:  Q96CF2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.906 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.193 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 120.590α = 90.00
b = 60.775β = 121.56
c = 75.654γ = 90.00
Software Package:
Software NamePurpose
PHENIXphasing
XSCALEdata scaling
XDSdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-09-12
    Type: Initial release
  • Version 1.1: 2018-09-19
    Type: Data collection, Database references
  • Version 1.2: 2018-10-03
    Type: Data collection, Database references