6MBZ

Structure of Transcription Factor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.266 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and functional consequences of the STAT5BN642Hdriver 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: https://doi.org/10.1038/s41467-019-10422-7
  • Primary Citation of Related Structures:  
    6MBW, 6MBZ

  • 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 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 Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, ON, L5L 1C6, Canada.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Signal transducer and activator of transcription 5B
A, B
572Homo sapiensMutation(s): 1 
Gene Names: STAT5B
UniProt & NIH Common Fund Data Resources
Find proteins for P51692 (Homo sapiens)
Explore P51692 
Go to UniProtKB:  P51692
PHAROS:  P51692
GTEx:  ENSG00000173757 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51692
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.21 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.265 
  • R-Value Observed: 0.266 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 132.38α = 90
b = 141.4β = 90
c = 72.85γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data scaling
PHASERphasing
PDB_EXTRACTdata extraction
xia2data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-19
    Type: Initial release
  • Version 1.1: 2023-10-11
    Changes: Data collection, Database references, Refinement description