4Y5O

CCM2 HHD in complex with MEKK3 NPB1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and vascular function of MEKK3-cerebral cavernous malformations 2 complex.

Fisher, O.S.Deng, H.Liu, D.Zhang, Y.Wei, R.Deng, Y.Zhang, F.Louvi, A.Turk, B.E.Boggon, T.J.Su, B.

(2015) Nat Commun 6: 7937-7937

  • DOI: 10.1038/ncomms8937

  • PubMed Abstract: 
  • Cerebral cavernous malformations 2 (CCM2) loss is associated with the familial form of CCM disease. The protein kinase MEKK3 (MAP3K3) is essential for embryonic angiogenesis in mice and interacts physically with CCM2, but how this interaction is medi ...

    Cerebral cavernous malformations 2 (CCM2) loss is associated with the familial form of CCM disease. The protein kinase MEKK3 (MAP3K3) is essential for embryonic angiogenesis in mice and interacts physically with CCM2, but how this interaction is mediated and its relevance to cerebral vasculature are unknown. Here we report that Mekk3 plays an intrinsic role in embryonic vascular development. Inducible endothelial Mekk3 knockout in neonatal mice is lethal due to multiple intracranial haemorrhages and brain blood vessels leakage. We discover direct interaction between CCM2 harmonin homology domain (HHD) and the N terminus of MEKK3, and determine a 2.35 Å cocrystal structure. We find Mekk3 deficiency impairs neurovascular integrity, which is partially dependent on Rho-ROCK signalling, and that disruption of MEKK3:CCM2 interaction leads to similar neurovascular leakage. We conclude that CCM2:MEKK3-mediated regulation of Rho signalling is required for maintenance of neurovascular integrity, unravelling a mechanism by which CCM2 loss leads to disease.


    Organizational Affiliation

    Department of Pharmacology, Yale University School of Medicine, 333 Cedar Street, New Haven, Connecticut 06520, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Malcavernin
A
98Homo sapiensMutation(s): 0 
Gene Names: CCM2 (C7orf22)
Find proteins for Q9BSQ5 (Homo sapiens)
Go to Gene View: CCM2
Go to UniProtKB:  Q9BSQ5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Mitogen-activated protein kinase kinase kinase 3
B
126Homo sapiensMutation(s): 0 
Gene Names: MAP3K3 (MAPKKK3, MEKK3)
EC: 2.7.11.25
Find proteins for Q99759 (Homo sapiens)
Go to Gene View: MAP3K3
Go to UniProtKB:  Q99759
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 43.310α = 90.00
b = 45.349β = 94.95
c = 61.533γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
PHENIXrefinement
Cootmodel building
HKL-2000data reduction
PHASERphasing
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 General Medical SciencesUnited StatesGM007324
National Science Foundation (United States)United States--

Revision History 

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2015-08-12
    Type: Refinement description
  • Version 1.2: 2017-09-06
    Type: Author supporting evidence, Derived calculations