Crystal Structure of TACE with Tryptophan Sulfonamide Derivative Inhibitor

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.218 

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This is version 1.4 of the entry. See complete history


Synthesis and activity of tryptophan sulfonamide derivatives as novel non-hydroxamate TNF-alpha converting enzyme (TACE) inhibitors.

Park, K.Gopalsamy, A.Aplasca, A.Ellingboe, J.W.Xu, W.Zhang, Y.Levin, J.I.

(2009) Bioorg Med Chem 17: 3857-3865

  • DOI: https://doi.org/10.1016/j.bmc.2009.04.033
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    A novel series of non-hydroxamate tryptophan sulfonamide derivatives containing a butynyloxy P1' moiety was identified as inhibitors of TNF-alpha converting enzyme (TACE). The structure-activity relationship of the series was examined via substitution on the tryptophan indole ring. Of the compounds investigated, 2-(4-(but-2-ynyloxy)phenylsulfonamido)-3-(1-(4-methoxybenzyl)-1H-indol-3-yl)propanoic acid (12p) has the best in vitro potency against isolated TACE enzyme with an IC(50) of 80 nM. Compound 12p also shows good selectivity over MMP-1, -13, -14.

  • Organizational Affiliation

    Chemical Sciences, Wyeth Research, 401 N. Middletown Road, Pearl River, NY 10965, USA. ParkK3@wyeth.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
288Homo sapiensMutation(s): 2 
UniProt & NIH Common Fund Data Resources
Find proteins for P78536 (Homo sapiens)
Explore P78536 
Go to UniProtKB:  P78536
PHAROS:  P78536
GTEx:  ENSG00000151694 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP78536
Sequence Annotations
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
792 PDBBind:  3G42 IC50: 140 (nM) from 1 assay(s)
BindingDB:  3G42 IC50: min: 140, max: 7800 (nM) from 3 assay(s)
Binding MOAD:  3G42 IC50: 140 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.218 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 163.846α = 90
b = 51.33β = 102.64
c = 132.741γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
DENZOdata reduction
SCALEPACKdata 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: 2009-05-19
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2018-01-24
    Changes: Structure summary
  • Version 1.3: 2021-10-20
    Changes: Database references, Derived calculations
  • Version 1.4: 2023-09-06
    Changes: Data collection, Refinement description