3RQF

Cerebral cavernous malformation 3 (CCM3) in complex with paxillin LD2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular Recognition of Leucine-Aspartate Repeat (LD) Motifs by the Focal Adhesion Targeting Homology Domain of Cerebral Cavernous Malformation 3 (CCM3).

Li, X.Ji, W.Zhang, R.Folta-Stogniew, E.Min, W.Boggon, T.J.

(2011) J.Biol.Chem. 286: 26138-26147

  • DOI: 10.1074/jbc.M110.211250
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cerebral cavernous malformation (CCM) is a disease that affects between 0.1 and 0.5% of the human population, with mutations in CCM3 accounting for ~ 15% of the autosomal dominant form of the disease. We recently reported that CCM3 contains an N-term ...

    Cerebral cavernous malformation (CCM) is a disease that affects between 0.1 and 0.5% of the human population, with mutations in CCM3 accounting for ~ 15% of the autosomal dominant form of the disease. We recently reported that CCM3 contains an N-terminal dimerization domain (CCM3D) and a C-terminal focal adhesion targeting (FAT) homology domain. Intermolecular protein-protein interactions of CCM3 are mediated by a highly conserved surface on the FAT homology domain and are affected by CCM3 truncations in the human disease. Here we report the crystal structures of CCM3 in complex with three different leucine-aspartate repeat (LD) motifs (LD1, LD2, and LD4) from the scaffolding protein paxillin, at 2.8, 2.7, and 2.5 Å resolution. We show that CCM3 binds LD motifs using the highly conserved hydrophobic patch 1 (HP1) and that this binding is similar to the binding of focal adhesion kinase and Pyk2 FAT domains to paxillin LD motifs. We further show by surface plasmon resonance that CCM3 binds paxillin LD motifs with affinities in the micromolar range, similar to FAK family FAT domains. Finally, we show that endogenous CCM3 and paxillin co-localize in mouse cerebral pericytes. These studies provide a molecular-level framework to investigate the protein-protein interactions of CCM3.


    Organizational Affiliation

    Department of Pharmacology, Yale University School ofMedicine, New Haven, Connecticut 06520, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Programmed cell death protein 10
A, B, C, D
214Homo sapiensMutation(s): 0 
Gene Names: PDCD10 (CCM3, TFAR15)
Find proteins for Q9BUL8 (Homo sapiens)
Go to Gene View: PDCD10
Go to UniProtKB:  Q9BUL8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Paxillin LD2 peptide
E
13Homo sapiensMutation(s): 0 
Gene Names: PXN
Find proteins for P49023 (Homo sapiens)
Go to Gene View: PXN
Go to UniProtKB:  P49023
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.7 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.237 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.862α = 90.00
b = 115.469β = 90.00
c = 124.379γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2011-08-24
    Type: Database references