4TVQ

CCM3 in complex with CCM2 LD-like motif


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.239 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

CCM2-CCM3 interaction stabilizes their protein expression and permits endothelial network formation.

Draheim, K.M.Li, X.Zhang, R.Fisher, O.S.Villari, G.Boggon, T.J.Calderwood, D.A.

(2015) J.Cell Biol. 208: 987-1001

  • DOI: 10.1083/jcb.201407129

  • PubMed Abstract: 
  • Mutations in the essential adaptor proteins CCM2 or CCM3 lead to cerebral cavernous malformations (CCM), vascular lesions that most frequently occur in the brain and are strongly associated with hemorrhagic stroke, seizures, and other neurological di ...

    Mutations in the essential adaptor proteins CCM2 or CCM3 lead to cerebral cavernous malformations (CCM), vascular lesions that most frequently occur in the brain and are strongly associated with hemorrhagic stroke, seizures, and other neurological disorders. CCM2 binds CCM3, but the molecular basis of this interaction, and its functional significance, have not been elucidated. Here, we used x-ray crystallography and structure-guided mutagenesis to show that an α-helical LD-like motif within CCM2 binds the highly conserved "HP1" pocket of the CCM3 focal adhesion targeting (FAT) homology domain. By knocking down CCM2 or CCM3 and rescuing with binding-deficient mutants, we establish that CCM2-CCM3 interactions protect CCM2 and CCM3 proteins from proteasomal degradation and show that both CCM2 and CCM3 are required for normal endothelial cell network formation. However, CCM3 expression in the absence of CCM2 is sufficient to support normal cell growth, revealing complex-independent roles for CCM3.


    Organizational Affiliation

    Department of Pharmacology and Department of Cell Biology, Yale University, New Haven, CT 06520.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cerebral cavernous malformations 3 protein
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
Cerebral cavernous malformations 2 protein
E
16Homo sapiensMutation(s): 0 
Gene Names: CCM2 (C7orf22)
Find proteins for Q9BSQ5 (Homo sapiens)
Go to Gene View: CCM2
Go to UniProtKB:  Q9BSQ5
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 61.855α = 90.00
b = 113.552β = 90.00
c = 120.034γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHASERphasing
Cootmodel building
PHENIXrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Neurological Disorders and StrokeUnited StatesR01NS085078
American Heart AssociationUnited States11POST7630017

Revision History 

  • Version 1.0: 2015-03-25
    Type: Initial release
  • Version 1.1: 2015-10-21
    Type: Data collection, Database references
  • Version 1.2: 2017-09-20
    Type: Author supporting evidence, Derived calculations