5VE6

Crystal structure of Sugen kinase 223


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.222 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of SgK223 pseudokinase reveals novel mechanisms of homotypic and heterotypic association.

Patel, O.Griffin, M.D.W.Panjikar, S.Dai, W.Ma, X.Chan, H.Zheng, C.Kropp, A.Murphy, J.M.Daly, R.J.Lucet, I.S.

(2017) Nat Commun 8: 1157-1157

  • DOI: 10.1038/s41467-017-01279-9
  • Primary Citation of Related Structures:  
    5VE6

  • PubMed Abstract: 
  • The mammalian pseudokinase SgK223, and its structurally related homologue SgK269, are oncogenic scaffolds that nucleate the assembly of specific signalling complexes and regulate tyrosine kinase signalling. Both SgK223 and SgK269 form homo- and hetero-oligomers, a mechanism that underpins a diversity of signalling outputs ...

    The mammalian pseudokinase SgK223, and its structurally related homologue SgK269, are oncogenic scaffolds that nucleate the assembly of specific signalling complexes and regulate tyrosine kinase signalling. Both SgK223 and SgK269 form homo- and hetero-oligomers, a mechanism that underpins a diversity of signalling outputs. However, mechanistic insights into SgK223 and SgK269 homo- and heterotypic association are lacking. Here we present the crystal structure of SgK223 pseudokinase domain and its adjacent N- and C-terminal helices. The structure reveals how the N- and C-regulatory helices engage in a novel fold to mediate the assembly of a high-affinity dimer. In addition, we identified regulatory interfaces on the pseudokinase domain required for the self-assembly of large open-ended oligomers. This study highlights the diversity in how the kinase fold mediates non-catalytic functions and provides mechanistic insights into how the assembly of these two oncogenic scaffolds is achieved in order to regulate signalling output.


    Organizational Affiliation

    Department of Medical Biology, University of Melbourne, Parkville, VIC, 3052, Australia. lucet.i@wehi.edu.au.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein kinase SgK223A492Homo sapiensMutation(s): 0 
Gene Names: SGK223PRAG1
EC: 2.7.10.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q86YV5 (Homo sapiens)
Explore Q86YV5 
Go to UniProtKB:  Q86YV5
PHAROS:  Q86YV5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.95 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.222 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 144.683α = 90
b = 144.683β = 90
c = 47.445γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
Auto-Rickshawphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-18
    Type: Initial release
  • Version 1.1: 2017-11-08
    Changes: Database references