4FZD

Crystal structure of MST4-MO25 complex with WSF motif


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of the MST4 in Complex with MO25 Provides Insights into Its Activation Mechanism

Shi, Z.Jiao, S.Zhang, Z.Ma, M.Zhang, Z.Chen, C.Wang, K.Wang, H.Wang, W.Zhang, L.Zhao, Y.Zhou, Z.

(2013) Structure 21: 449-461

  • DOI: 10.1016/j.str.2013.01.007
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Mammalian STE20-like kinase MST4 regulates multiple cellular aspects such as cell polarity and proliferation. MST4 acts downstream of LKB1/MO25/STRAD complex to induce brush border formation. MO25 directly interacts with MST4 to promote its kinase ac ...

    Mammalian STE20-like kinase MST4 regulates multiple cellular aspects such as cell polarity and proliferation. MST4 acts downstream of LKB1/MO25/STRAD complex to induce brush border formation. MO25 directly interacts with MST4 to promote its kinase activity. Here, we report the crystal structure of MST4 in complex with MO25. Association of MO25 rotates the αC helix of MST4 toward its catalytic core, stabilizing the αC helix in an active position. The kinase domain of MST4 forms a specific homodimer that is required for trans-autophosphorylation. MO25-stimulated activation of MST4 promotes apoptosis in HEK293T cells. Atomic resolution permitted the study of interface mutations capable of disrupting the MST4-MO25 interaction or the kinase-domain-mediated homodimerization. These mutations impaired MST4 kinase activation and function within the cell. Collectively, our study identifies the activation mechanism of MST4 and provides a structural basis for further functional study.


    Organizational Affiliation

    State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Calcium-binding protein 39
A
328Homo sapiensMutation(s): 0 
Gene Names: CAB39 (MO25)
Find proteins for Q9Y376 (Homo sapiens)
Go to Gene View: CAB39
Go to UniProtKB:  Q9Y376
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase MST4
B
283Homo sapiensMutation(s): 1 
Gene Names: STK26 (MASK, MST4)
EC: 2.7.11.1
Find proteins for Q9P289 (Homo sapiens)
Go to Gene View: STK26
Go to UniProtKB:  Q9P289
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
C-terminal peptide from Serine/threonine-protein kinase MST4
C
5Homo sapiensMutation(s): 0 
Gene Names: STK26 (MASK, MST4)
EC: 2.7.11.1
Find proteins for Q9P289 (Homo sapiens)
Go to Gene View: STK26
Go to UniProtKB:  Q9P289
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
B
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.25 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.220 
  • Space Group: I 4 3 2
Unit Cell:
Length (Å)Angle (°)
a = 239.259α = 90.00
b = 239.259β = 90.00
c = 239.259γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
HKL-2000data collection
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2012-07-06 
  • Released Date: 2013-03-06 
  • Deposition Author(s): Shi, Z.B., Zhou, Z.C.

Revision History 

  • Version 1.0: 2013-03-06
    Type: Initial release
  • Version 1.1: 2013-04-17
    Type: Database references