Crystal Structure of 1-(4-{4-[7-amino-2-(1,2,3-benzothiadiazol-7-yl)furo[2,3-c]pyridin-4-yl]-1H-pyrazol-1-yl}piperidin-1-yl)ethan-1-one bound to TAK1-TAB1

Experimental Data Snapshot

  • Resolution: 2.54 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.196 

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This is version 1.4 of the entry. See complete history


Discovery and optimization of 7-aminofuro[2,3-c]pyridine inhibitors of TAK1.

Hornberger, K.R.Berger, D.M.Crew, A.P.Dong, H.Kleinberg, A.Li, A.H.Medeiros, M.R.Mulvihill, M.J.Siu, K.Tarrant, J.Wang, J.Weng, F.Wilde, V.L.Albertella, M.Bittner, M.Cooke, A.Gray, M.J.Maresca, P.May, E.Meyn, P.Peick, W.Romashko, D.Tanowitz, M.Tokar, B.

(2013) Bioorg Med Chem Lett 23: 4517-4522

  • DOI: https://doi.org/10.1016/j.bmcl.2013.06.053
  • Primary Citation of Related Structures:  
    4L3P, 4L52

  • PubMed Abstract: 

    The discovery and potency optimization of a series of 7-aminofuro[2,3-c]pyridine inhibitors of TAK1 is described. Micromolar hits taken from high-throughput screening were optimized for biochemical and cellular mechanistic potency to ~10nM, as exemplified by compound 12az. Application of structure-based drug design aided by co-crystal structures of TAK1 with inhibitors significantly shortened the number of iterations required for the optimization.

  • Organizational Affiliation

    OSI Pharmaceuticals LLC, 1 Bioscience Park Drive, Farmingdale, NY 11735, USA. keith.hornberger@boehringer-ingelheim.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase kinase kinase 7, TGF-beta-activated kinase 1 and MAP3K7-binding protein 1 chimera307Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q15750 (Homo sapiens)
Explore Q15750 
Go to UniProtKB:  Q15750
PHAROS:  Q15750
GTEx:  ENSG00000100324 
Find proteins for O43318 (Homo sapiens)
Explore O43318 
Go to UniProtKB:  O43318
PHAROS:  O43318
GTEx:  ENSG00000135341 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsO43318Q15750
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 1UL

Download Ideal Coordinates CCD File 
B [auth A]1-(4-{4-[7-amino-2-(1,2,3-benzothiadiazol-7-yl)furo[2,3-c]pyridin-4-yl]-1H-pyrazol-1-yl}piperidin-1-yl)ethanone
C23 H21 N7 O2 S
Binding Affinity Annotations 
IDSourceBinding Affinity
1UL BindingDB:  4L52 IC50: min: 4, max: 12 (nM) from 2 assay(s)
PDBBind:  4L52 IC50: 4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.54 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.196 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.16α = 90
b = 133.784β = 90
c = 142.237γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-07-03
    Type: Initial release
  • Version 1.1: 2013-07-31
    Changes: Database references
  • Version 1.2: 2013-08-07
    Changes: Database references
  • Version 1.3: 2017-07-26
    Changes: Advisory, Refinement description, Source and taxonomy
  • Version 1.4: 2017-11-15
    Changes: Refinement description