5J45

Crystal structure of Shrub, fly ortholog of SNF7/CHMP4B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.758 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Electrostatic Interactions between Elongated Monomers Drive Filamentation of Drosophila Shrub, a Metazoan ESCRT-III Protein.

McMillan, B.J.Tibbe, C.Jeon, H.Drabek, A.A.Klein, T.Blacklow, S.C.

(2016) Cell Rep 16: 1211-1217

  • DOI: 10.1016/j.celrep.2016.06.093

  • PubMed Abstract: 
  • The endosomal sorting complex required for transport (ESCRT) is a conserved protein complex that facilitates budding and fission of membranes. It executes a key step in many cellular events, including cytokinesis and multi-vesicular body formation. T ...

    The endosomal sorting complex required for transport (ESCRT) is a conserved protein complex that facilitates budding and fission of membranes. It executes a key step in many cellular events, including cytokinesis and multi-vesicular body formation. The ESCRT-III protein Shrub in flies, or its homologs in yeast (Snf7) or humans (CHMP4B), is a critical polymerizing component of ESCRT-III needed to effect membrane fission. We report the structural basis for polymerization of Shrub and define a minimal region required for filament formation. The X-ray structure of the Shrub core shows that individual monomers in the lattice interact in a staggered arrangement using complementary electrostatic surfaces. Mutations that disrupt interface salt bridges interfere with Shrub polymerization and function. Despite substantial sequence divergence and differences in packing interactions, the arrangement of Shrub subunits in the polymer resembles that of Snf7 and other family homologs, suggesting that this intermolecular packing mechanism is shared among ESCRT-III proteins.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GH13992p
A
127Drosophila melanogasterMutation(s): 0 
Gene Names: shrb (anon-WO0118547.180, Dmel\CG8055, DmSNF2, Dvps32, ESCRT, ESCRT-III, Shrb, Shrub, Snf7, snf7, Vps32, vps32)
Find proteins for Q8T0Q4 (Drosophila melanogaster)
Go to UniProtKB:  Q8T0Q4
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.758 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.216 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 29.767α = 90.00
b = 29.767β = 90.00
c = 174.311γ = 90.00
Software Package:
Software NamePurpose
PHENIXphasing
XDSdata reduction
PHENIXrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-07-20
    Type: Initial release
  • Version 1.1: 2016-08-10
    Type: Database references
  • Version 1.2: 2016-08-17
    Type: Database references