4JJY

Alix V domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 6.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The yeast alix homolog bro1 functions as a ubiquitin receptor for protein sorting into multivesicular endosomes.

Pashkova, N.Gakhar, L.Winistorfer, S.C.Sunshine, A.B.Rich, M.Dunham, M.J.Yu, L.Piper, R.C.

(2013) Dev Cell 25: 520-533

  • DOI: 10.1016/j.devcel.2013.04.007
  • Primary Citation of Related Structures:  
    4JIO, 4JJY

  • PubMed Abstract: 
  • Sorting of ubiquitinated membrane proteins into lumenal vesicles of multivesicular bodies is mediated by the Endosomal Sorting Complex Required for Transport (ESCRT) apparatus and accessory proteins such as Bro1, which recruits the deubiquitinating e ...

    Sorting of ubiquitinated membrane proteins into lumenal vesicles of multivesicular bodies is mediated by the Endosomal Sorting Complex Required for Transport (ESCRT) apparatus and accessory proteins such as Bro1, which recruits the deubiquitinating enzyme Doa4 to remove ubiquitin from cargo. Here we propose that Bro1 works as a receptor for the selective sorting of ubiquitinated cargoes. We found synthetic genetic interactions between BRO1 and ESCRT-0, suggesting that Bro1 functions similarly to ESCRT-0. Multiple structural approaches demonstrated that Bro1 binds ubiquitin via the N-terminal trihelical arm of its middle V domain. Mutants of Bro1 that lack the ability to bind Ub were dramatically impaired in their ability to sort Ub-cargo membrane proteins, but only when combined with hypomorphic alleles of ESCRT-0. These data suggest that Bro1 and other Bro1 family members function in parallel with ESCRT-0 to recognize and sort Ub-cargoes.


    Organizational Affiliation

    Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, IA 52242, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Programmed cell death 6-interacting proteinAB360Homo 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
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,BL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 6.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.211 
  • Space Group: I 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 223.77α = 90
b = 223.77β = 90
c = 223.77γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
PHENIXmodel building
PHENIXrefinement
d*TREKdata reduction
d*TREKdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-06-19
    Type: Initial release
  • Version 1.1: 2013-07-10
    Changes: Database references