5V3R

CHMP4C in complex with ALIX BRO1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 

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:  
    5V3R, 5WA1

  • 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 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.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Programmed cell death 6-interacting proteinA380Homo sapiensMutation(s): 0 
Gene Names: PDCD6IPAIP1ALIXKIAA1375
Find proteins for Q8WUM4 (Homo sapiens)
Explore Q8WUM4 
Go to UniProtKB:  Q8WUM4
NIH Common Fund Data Resources
PHAROS  Q8WUM4
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Charged multivesicular body protein 4cB18Homo sapiensMutation(s): 0 
Gene Names: CHMP4CSHAX3
Find proteins for Q96CF2 (Homo sapiens)
Explore Q96CF2 
Go to UniProtKB:  Q96CF2
NIH Common Fund Data Resources
PHAROS  Q96CF2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.194 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 120.59α = 90
b = 60.775β = 121.56
c = 75.654γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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