bRaf complexed with an inhibitor

Experimental Data Snapshot

  • Resolution: 3.05 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.200 

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Ligand Structure Quality Assessment 

This is version 1.3 of the entry. See complete history


GSK114: A selective inhibitor for elucidating the biological role of TNNI3K.

Lawhorn, B.G.Philp, J.Graves, A.P.Shewchuk, L.Holt, D.A.Gatto, G.J.Kallander, L.S.

(2016) Bioorg Med Chem Lett 26: 3355-3358

  • DOI: https://doi.org/10.1016/j.bmcl.2016.05.033
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A series of selective TNNI3K inhibitors were developed by modifying the hinge-binding heterocycle of a previously reported dual TNNI3K/B-Raf inhibitor. The resulting quinazoline-containing compounds exhibit a large preference (up to 250-fold) for binding to TNNI3K versus B-Raf, are useful probes for elucidating the biological pathways associated with TNNI3K, and are leads for discovering novel cardiac medicines. GSK114 emerged as a leading inhibitor, displaying significant bias (40-fold) for TNNI3K over B-Raf, exceptional broad spectrum kinase selectivity, and adequate oral exposure to enable its use in cellular and in vivo studies.

  • Organizational Affiliation

    Heart Failure DPU, GlaxoSmithKline, 709 Swedeland Road, King of Prussia, PA 19406, USA. Electronic address: brian.2.lawhorn@gsk.com.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase B-raf
A, B
272Homo sapiensMutation(s): 5 
UniProt & NIH Common Fund Data Resources
Find proteins for P15056 (Homo sapiens)
Explore P15056 
Go to UniProtKB:  P15056
GTEx:  ENSG00000157764 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15056
Sequence Annotations
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
4EF BindingDB:  4YHT IC50: 0.6 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 3.05 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.200 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.783α = 90
b = 99.783β = 90
c = 161.504γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-16
    Type: Initial release
  • Version 1.1: 2016-06-15
    Changes: Database references
  • Version 1.2: 2016-06-22
    Changes: Database references
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references, Derived calculations