3ZHP

Human MST3 (STK24) in complex with MO25beta


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.227 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural Insights Into the Activation of Mst3 by Mo25.

Mehellou, Y.Alessi, D.R.Macartney, T.J.Szklarz, M.Knapp, S.Elkins, J.M.

(2013) Biochem.Biophys.Res.Commun. 431: 604

  • DOI: 10.1016/j.bbrc.2012.12.113

  • PubMed Abstract: 
  • The MO25 scaffolding protein operates as critical regulator of a number of STE20 family protein kinases (e.g. MST and SPAK isoforms) as well as pseudokinases (e.g. STRAD isoforms that play a critical role in activating the LKB1 tumour suppressor). To ...

    The MO25 scaffolding protein operates as critical regulator of a number of STE20 family protein kinases (e.g. MST and SPAK isoforms) as well as pseudokinases (e.g. STRAD isoforms that play a critical role in activating the LKB1 tumour suppressor). To better understand how MO25 interacts and stimulates the activity of STE20 protein kinases, we determined the crystal structure of MST3 catalytic domain (residues 19-289) in complex with full length MO25β. The structure reveals an intricate web of interactions between MST3 and MO25β that function to stabilise the kinase domain in a closed, active, conformation even in the absence of ATP or an ATP-mimetic inhibitor. The binding mode of MO25β is reminiscent of the mechanism by which MO25α interacts with the pseudokinase STRADα. In particular we identified interface residues Tyr223 of MO25β and Glu58 and Ile71 of MST3 that when mutated prevent activation of MST3 by MO25β. These data provide molecular understanding of the mechanism by which MO25 isoforms regulates the activity of STE20 family protein kinases.


    Organizational Affiliation

    MRC Protein Phosphorylation Unit, College of Life Sciences, University of Dundee, Dow Street, Dundee, DD1 5EH Scotland, UK. y.mehellou@dundee.ac.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CALCIUM-BINDING PROTEIN 39-LIKE
A, B
340Homo sapiensMutation(s): 0 
Gene Names: CAB39L
Find proteins for Q9H9S4 (Homo sapiens)
Go to Gene View: CAB39L
Go to UniProtKB:  Q9H9S4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SERINE/THREONINE-PROTEIN KINASE 24
C, D
294Homo sapiensMutation(s): 0 
Gene Names: STK24 (MST3, STK3)
EC: 2.7.11.1
Find proteins for Q9Y6E0 (Homo sapiens)
Go to Gene View: STK24
Go to UniProtKB:  Q9Y6E0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.227 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 64.800α = 90.00
b = 120.340β = 99.69
c = 98.910γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHASERphasing
SCALAdata scaling
BUSTERrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-16
    Type: Initial release
  • Version 1.1: 2013-04-17
    Type: Database references
  • Version 1.2: 2014-07-16
    Type: Structure summary
  • Version 1.3: 2018-01-24
    Type: Structure summary