Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 13.90 kDa 
• Atom Count: 928 
• Residue Count: 106 
• Unique protein chains: 2

4YL6

Crystal structure of truncated cerebral cavernous malformation 2 C-terminal adaptor domain in complex with an internal helix of mitogen-activated protein kinase kinase kinase 3

• DOI: 10.2210/pdb4YL6/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-03-05 Released: 2015-06-03 
• Deposition Author(s): Ding, J., Wang, X., Wang, D.C.
• Funding Organization(s): Chinese Ministry of Science and Technology 973 program, Strategic Priority Research Program of the Chinese Academy of Sciences

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.237 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 

Literature

Structural Insights into the Molecular Recognition between Cerebral Cavernous Malformation 2 and Mitogen-Activated Protein Kinase Kinase Kinase 3

Wang, X., Hou, Y., Deng, K., Zhang, Y., Wang, D.C., Ding, J.

(2015) Structure 23: 1087-1096

• PubMed: 25982527 
• DOI: 10.1016/j.str.2015.04.003
• Primary Citation of Related Structures:  
  4YKC, 4YKD, 4YL6


• PubMed Abstract: 
  

Cerebral cavernous malformation 2 (CCM2) functions as an adaptor protein implicated in various biological processes. By interacting with the mitogen-activated protein kinase MEKK3, CCM2 either mediates the activation of MEKK3 signaling in response to osmotic stress or negatively regulates MEKK3 signaling, which is important for normal cardiovascular development. However, the molecular basis governing CCM2-MEKK3 interaction is largely unknown. Here we report the crystal structure of the CCM2 C-terminal part (CCM2ct) containing both the five-helix domain (CCM2cts) and the following C-terminal tail. The end of the C-terminal tail forms an isolated helix, which interacts intramolecularly with CCM2cts. By biochemical studies we identified the N-terminal amphiphilic helix of MEKK3 (MEKK3-nhelix) as the essential structural element for CCM2ct binding. We further determined the crystal structure of CCM2cts-MEKK3-nhelix complex, in which MEKK3-nhelix binds to the same site of CCM2cts for CCM2ct intramolecular interaction. These findings build a structural framework for understanding CCM2ct-MEKK3 molecular recognition.

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Organizational Affiliation: 

National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, People's Republic of China. Electronic address: [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Malcavernin	A	96	Homo sapiens	Mutation(s): 0  Gene Names: CCM2, C7orf22, PP10187
Find proteins for Q9BSQ5 (Homo sapiens) Explore Q9BSQ5  Go to UniProtKB:  Q9BSQ5
NIH Common Fund Data Resources
PHAROS  Q9BSQ5 GTEx  ENSG00000136280

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Mitogen-activated protein kinase kinase kinase 3	B	22	Homo sapiens	Mutation(s): 0  Gene Names: MAP3K3, MAPKKK3, MEKK3 EC: 2.7.11.25
Find proteins for Q99759 (Homo sapiens) Explore Q99759  Go to UniProtKB:  Q99759
NIH Common Fund Data Resources
PHAROS  Q99759 GTEx  ENSG00000198909

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.237 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 61.21	α = 90
b = 61.21	β = 90
c = 68.98	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2015-03-05 
• Released Date: 2015-06-03 
Deposition Author(s): Ding, J., Wang, X., Wang, D.C.

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Funding Organization	Location	Grant Number
Chinese Ministry of Science and Technology 973 program	China	2011CB910304
Strategic Priority Research Program of the Chinese Academy of Sciences	China	XDB08020200

Revision History 

• Version 1.0: 2015-06-03
  Type: Initial release
  
• Version 1.1: 2015-06-17
  Changes: Database references