4FIJ

Catalytic domain of human PAK4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Type II p21-activated kinases (PAKs) are regulated by an autoinhibitory pseudosubstrate.

Ha, B.H.Davis, M.J.Chen, C.Lou, H.J.Gao, J.Zhang, R.Krauthammer, M.Halaban, R.Schlessinger, J.Turk, B.E.Boggon, T.J.

(2012) Proc Natl Acad Sci U S A 109: 16107-16112

  • DOI: 10.1073/pnas.1214447109
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The type II p21-activated kinases (PAKs) are key effectors of RHO-family GTPases involved in cell motility, survival, and proliferation. Using a structure-guided approach, we discovered that type II PAKs are regulated by an N-terminal autoinhibitory ...

    The type II p21-activated kinases (PAKs) are key effectors of RHO-family GTPases involved in cell motility, survival, and proliferation. Using a structure-guided approach, we discovered that type II PAKs are regulated by an N-terminal autoinhibitory pseudosubstrate motif centered on a critical proline residue, and that this regulation occurs independently of activation loop phosphorylation. We determined six X-ray crystal structures of either full-length PAK4 or its catalytic domain, that demonstrate the molecular basis for pseudosubstrate binding to the active state with phosphorylated activation loop. We show that full-length PAK4 is constitutively autoinhibited, but mutation of the pseudosubstrate releases this inhibition and causes increased phosphorylation of the apoptotic regulation protein Bcl-2/Bcl-X(L) antagonist causing cell death and cellular morphological changes. We also find that PAK6 is regulated by the pseudosubstrate region, indicating a common type II PAK autoregulatory mechanism. Finally, we find Src SH3, but not β-PIX SH3, can activate PAK4. We provide a unique understanding for type II PAK regulation.


    Organizational Affiliation

    Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase PAK 4A346Homo sapiensMutation(s): 0 
Gene Names: KIAA1142PAK4
EC: 2.7.11.1
Find proteins for O96013 (Homo sapiens)
Explore O96013 
Go to UniProtKB:  O96013
NIH Common Fund Data Resources
PHAROS  O96013
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
AL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.271 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.210 
  • Space Group: P 41 21 2
  • Diffraction Data DOI: 10.15785/SBGRID/432 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.44α = 90
b = 61.44β = 90
c = 177.258γ = 90
Software Package:
Software NamePurpose
Excutordata collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2012-06-08 
  • Released Date: 2012-09-12 
  • Deposition Author(s): Ha, B.H., Boggon, T.J.

Revision History 

  • Version 1.0: 2012-09-12
    Type: Initial release
  • Version 1.1: 2012-09-26
    Changes: Database references
  • Version 1.2: 2012-10-31
    Changes: Database references