2VSZ

Crystal Structure of the ELMO1 PH domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

An Alpha-Helical Extension of the Elmo1 Pleckstrin Homology Domain Mediates Direct Interaction to Dock180 and is Critical in Rac Signaling.

Komander, D.Patel, M.Laurin, M.Fradet, N.Pelletier, A.Barford, D.Cote, J.-F.

(2008) Molecular Biology of the Cell 19: 4837

  • DOI: 10.1091/mbc.E08-04-0345

  • PubMed Abstract: 
  • The mammalian DOCK180 protein belongs to an evolutionarily conserved protein family, which together with ELMO proteins, is essential for activation of Rac GTPase-dependent biological processes. Here, we have analyzed the DOCK180-ELMO1 interaction, an ...

    The mammalian DOCK180 protein belongs to an evolutionarily conserved protein family, which together with ELMO proteins, is essential for activation of Rac GTPase-dependent biological processes. Here, we have analyzed the DOCK180-ELMO1 interaction, and map direct interaction interfaces to the N-terminal 200 amino acids of DOCK180, and to the C-terminal 200 amino acids of ELMO1, comprising the ELMO1 PH domain. Structural and biochemical analysis of this PH domain reveals that it is incapable of phospholipid binding, but instead structurally resembles FERM domains. Moreover, the structure revealed an N-terminal amphiphatic alpha-helix, and point mutants of invariant hydrophobic residues in this helix disrupt ELMO1-DOCK180 complex formation. A secondary interaction between ELMO1 and DOCK180 is conferred by the DOCK180 SH3 domain and proline-rich motifs at the ELMO1 C-terminus. Mutation of both DOCK180-interaction sites on ELMO1 is required to disrupt the DOCK180-ELMO1 complex. Significantly, although this does not affect DOCK180 GEF activity toward Rac in vivo, Rac signaling is impaired, implying additional roles for ELMO in mediating intracellular Rac signaling.


    Organizational Affiliation

    Section of Structural Biology, Chester Beatty Laboratories, Institute of Cancer Research, London SW3 6JB, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ENGULFMENT AND CELL MOTILITY PROTEIN 1
A, B
149Homo sapiensMutation(s): 0 
Gene Names: ELMO1 (KIAA0281)
Find proteins for Q92556 (Homo sapiens)
Go to Gene View: ELMO1
Go to UniProtKB:  Q92556
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 166.016α = 90.00
b = 166.016β = 90.00
c = 81.704γ = 120.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SHARPphasing
SHELXCDEphasing
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-03-10
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Refinement description, Version format compliance