5ULM

Structure of the ASK1 central regulatory region


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural basis of autoregulatory scaffolding by apoptosis signal-regulating kinase 1.

Weijman, J.F.Kumar, A.Jamieson, S.A.King, C.M.Caradoc-Davies, T.T.Ledgerwood, E.C.Murphy, J.M.Mace, P.D.

(2017) Proc. Natl. Acad. Sci. U.S.A. 114: E2096-E2105

  • DOI: 10.1073/pnas.1620813114

  • PubMed Abstract: 
  • Apoptosis signal-regulating kinases (ASK1-3) are apical kinases of the p38 and JNK MAP kinase pathways. They are activated by diverse stress stimuli, including reactive oxygen species, cytokines, and osmotic stress; however, a molecular understanding ...

    Apoptosis signal-regulating kinases (ASK1-3) are apical kinases of the p38 and JNK MAP kinase pathways. They are activated by diverse stress stimuli, including reactive oxygen species, cytokines, and osmotic stress; however, a molecular understanding of how ASK proteins are controlled remains obscure. Here, we report a biochemical analysis of the ASK1 kinase domain in conjunction with its N-terminal thioredoxin-binding domain, along with a central regulatory region that links the two. We show that in solution the central regulatory region mediates a compact arrangement of the kinase and thioredoxin-binding domains and the central regulatory region actively primes MKK6, a key ASK1 substrate, for phosphorylation. The crystal structure of the central regulatory region reveals an unusually compact tetratricopeptide repeat (TPR) region capped by a cryptic pleckstrin homology domain. Biochemical assays show that both a conserved surface on the pleckstrin homology domain and an intact TPR region are required for ASK1 activity. We propose a model in which the central regulatory region promotes ASK1 activity via its pleckstrin homology domain but also facilitates ASK1 autoinhibition by bringing the thioredoxin-binding and kinase domains into close proximity. Such an architecture provides a mechanism for control of ASK-type kinases by diverse activators and inhibitors and demonstrates an unexpected level of autoregulatory scaffolding in mammalian stress-activated MAP kinase signaling.


    Organizational Affiliation

    Biochemistry Department, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mitogen-activated protein kinase kinase kinase 5
A, B
393Homo sapiensMutation(s): 0 
Gene Names: MAP3K5 (ASK1, MAPKKK5, MEKK5)
EC: 2.7.11.25
Find proteins for Q99683 (Homo sapiens)
Go to Gene View: MAP3K5
Go to UniProtKB:  Q99683
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: 2.1 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.233 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 74.234α = 90.00
b = 57.117β = 104.87
c = 103.575γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHENIXphasing
XDSdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-03-01
    Type: Initial release
  • Version 1.1: 2017-03-15
    Type: Database references
  • Version 1.2: 2017-03-29
    Type: Database references
  • Version 1.3: 2017-09-27
    Type: Author supporting evidence, Data collection
  • Version 1.4: 2017-11-01
    Type: Author supporting evidence