Experimental Data Snapshot

  • Resolution: 1.86 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

Starting Model: experimental
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Crystal structures of apo and inhibitor-bound TGF beta R2 kinase domain: insights into TGF beta R isoform selectivity.

Tebben, A.J.Ruzanov, M.Gao, M.Xie, D.Kiefer, S.E.Yan, C.Newitt, J.A.Zhang, L.Kim, K.Lu, H.Kopcho, L.M.Sheriff, S.

(2016) Acta Crystallogr D Struct Biol 72: 658-674

  • DOI: https://doi.org/10.1107/S2059798316003624
  • Primary Citation of Related Structures:  
    5E8S, 5E8T, 5E8U, 5E8V, 5E8W, 5E8X, 5E8Y, 5E8Z, 5E90, 5E91, 5E92

  • PubMed Abstract: 

    The cytokine TGF-β modulates a number of cellular activities and plays a critical role in development, hemostasis and physiology, as well as in diseases including cancer and fibrosis. TGF-β signals through two transmembrane serine/threonine kinase receptors: TGFβR1 and TGFβR2. Multiple structures of the TGFβR1 kinase domain are known, but the structure of TGFβR2 remains unreported. Wild-type TGFβR2 kinase domain was refractory to crystallization, leading to the design of two mutated constructs: firstly, a TGFβR1 chimeric protein with seven ATP-site residues mutated to their counterparts in TGFβR2, and secondly, a reduction of surface entropy through mutation of six charged residues on the surface of the TGFβR2 kinase domain to alanines. These yielded apo and inhibitor-bound crystals that diffracted to high resolution (<2 Å). Comparison of these structures with those of TGFβR1 reveal shared ligand contacts as well as differences in the ATP-binding sites, suggesting strategies for the design of pan and selective TGFβR inhibitors.

  • Organizational Affiliation

    Molecular Structure and Design, Bristol-Myers Squibb R & D, PO Box 4000, Princeton, NJ 08543-4000, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TGF-beta receptor type-1307Homo sapiensMutation(s): 1 
Gene Names: TGFBR1ALK5SKR4
UniProt & NIH Common Fund Data Resources
Find proteins for P36897 (Homo sapiens)
Explore P36897 
Go to UniProtKB:  P36897
GTEx:  ENSG00000106799 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP36897
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.86 Å
  • R-Value Free: 0.186 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.71α = 90
b = 78.11β = 90
c = 88.77γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2016-05-11 
  • Deposition Author(s): Sheriff, S.

Revision History  (Full details and data files)

  • Version 1.0: 2016-05-11
    Type: Initial release
  • Version 1.1: 2018-04-18
    Changes: Data collection, Database references, Derived calculations
  • Version 1.2: 2023-09-27
    Changes: Data collection, Database references, Refinement description