6MBW

Structure of Transcription Factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.29 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.266 
  • R-Value Observed: 0.268 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and functional consequences of the STAT5BN642H driver mutation.

de Araujo, E.D.Erdogan, F.Neubauer, H.A.Meneksedag-Erol, D.Manaswiyoungkul, P.Eram, M.S.Seo, H.S.Qadree, A.K.Israelian, J.Orlova, A.Suske, T.Pham, H.T.T.Boersma, A.Tangermann, S.Kenner, L.Rulicke, T.Dong, A.Ravichandran, M.Brown, P.J.Audette, G.F.Rauscher, S.Dhe-Paganon, S.Moriggl, R.Gunning, P.T.

(2019) Nat Commun 10: 2517-2517

  • DOI: 10.1038/s41467-019-10422-7
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Hyper-activated STAT5B variants are high value oncology targets for pharmacologic intervention. STAT5B N642H , a frequently-occurring oncogenic driver mutation, promotes aggressive T-cell leukemia/lymphoma in patient carriers, although the ...

    Hyper-activated STAT5B variants are high value oncology targets for pharmacologic intervention. STAT5B N642H , a frequently-occurring oncogenic driver mutation, promotes aggressive T-cell leukemia/lymphoma in patient carriers, although the molecular origins remain unclear. Herein, we emphasize the aggressive nature of STAT5B N642H in driving T-cell neoplasia upon hematopoietic expression in transgenic mice, revealing evidence of multiple T-cell subset organ infiltration. Notably, we demonstrate STAT5B N642H -driven transformation of γδ T-cells in in vivo syngeneic transplant models, comparable to STAT5B N642H patient γδ T-cell entities. Importantly, we present human STAT5B and STAT5B N642H crystal structures, which propose alternative mutation-mediated SH2 domain conformations. Our biophysical data suggests STAT5B N642H can adopt a hyper-activated and hyper-inactivated state with resistance to dephosphorylation. MD simulations support sustained interchain cross-domain interactions in STAT5B N642H , conferring kinetic stability to the mutant anti-parallel dimer. This study provides a molecular explanation for the STAT5B N642H activating potential, and insights into pre-clinical models for targeted intervention of hyper-activated STAT5B.


    Organizational Affiliation

    Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, M5S 3H6, Canada. patrick.gunning@utoronto.ca.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Signal transducer and activator of transcription 5B
A, B
572Homo sapiensMutation(s): 0 
Gene Names: STAT5B
Find proteins for P51692 (Homo sapiens)
Go to UniProtKB:  P51692
NIH Common Fund Data Resources
PHAROS  P51692
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.29 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.266 
  • R-Value Observed: 0.268 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 134.6α = 90
b = 138.62β = 90
c = 76.5γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data scaling
PHASERphasing
PDB_EXTRACTdata extraction
xia2data reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)Canada--

Revision History 

  • Version 1.0: 2019-06-19
    Type: Initial release
  • Version 1.1: 2020-01-08
    Changes: Author supporting evidence