3ULY

Crystal Structure of BROX Bro1 Domain in Complex with the C-Terminal Tails of CHMP5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Two Distinct Binding Modes Define the Interaction of Brox with the C-Terminal Tails of CHMP5 and CHMP4B.

Mu, R.Dussupt, V.Jiang, J.Sette, P.Rudd, V.Chuenchor, W.Bello, N.F.Bouamr, F.Xiao, T.S.

(2012) Structure 20: 887-898

  • DOI: 10.1016/j.str.2012.03.001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Interactions of the CHMP protein carboxyl terminal tails with effector proteins play important roles in retroviral budding, cytokinesis, and multivesicular body biogenesis. Here we demonstrate that hydrophobic residues at the CHMP4B C-terminal amphip ...

    Interactions of the CHMP protein carboxyl terminal tails with effector proteins play important roles in retroviral budding, cytokinesis, and multivesicular body biogenesis. Here we demonstrate that hydrophobic residues at the CHMP4B C-terminal amphipathic α helix bind a concave surface of Brox, a mammalian paralog of Alix. Unexpectedly, CHMP5 was also found to bind Brox and specifically recruit endogenous Brox to detergent-resistant membrane fractions through its C-terminal 20 residues. Instead of an α helix, the CHMP5 C-terminal tail adopts a tandem β-hairpin structure that binds Brox at the same site as CHMP4B. Additional Brox:CHMP5 interface is furnished by a unique CHMP5 hydrophobic pocket engaging the Brox residue Y348 that is not conserved among the Bro1 domains. Our studies thus unveil a β-hairpin conformation of the CHMP5 protein C-terminal tail, and provide insights into the overlapping but distinct binding profiles of ESCRT-III and the Bro1 domain proteins.


    Organizational Affiliation

    Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MD 20892, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BRO1 domain-containing protein BROX
A
410Homo sapiensMutation(s): 0 
Gene Names: BROX (BROFTI, C1orf58)
Find proteins for Q5VW32 (Homo sapiens)
Go to Gene View: BROX
Go to UniProtKB:  Q5VW32
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Charged multivesicular body protein 5
B
69Homo sapiensMutation(s): 0 
Gene Names: CHMP5 (C9orf83, SNF7DC2)
Find proteins for Q9NZZ3 (Homo sapiens)
Go to Gene View: CHMP5
Go to UniProtKB:  Q9NZZ3
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.166 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 172.377α = 90.00
b = 46.033β = 104.52
c = 68.557γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
CBASSdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-18
    Type: Initial release
  • Version 1.1: 2012-05-23
    Type: Database references