Oxalyl-aryl-Amino Benzoic acid Inhibitors of PTP1B, compound 8b

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.226 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Discovery and Structure-Activity Relationship of Oxalylarylaminobenzoic Acids as Inhibitors of Protein Tyrosine Phosphatase 1B

Liu, G.Szczepankiewicz, B.G.Pei, Z.Janowich, D.A.Xin, Z.Hadjuk, P.J.Abad-Zapatero, C.Liang, H.Hutchins, C.W.Fesik, S.W.Ballaron, S.J.Stashko, M.A.Lubben, T.Mika, A.K.Zinker, B.A.Trevillyan, J.M.Jirousek, M.R.

(2003) J Med Chem 46: 2093-2103

  • DOI: https://doi.org/10.1021/jm0205696
  • Primary Citation of Related Structures:  
    1ONY, 1ONZ

  • PubMed Abstract: 

    Protein Tyrosine phosphatase 1B (PTP1B) has been implicated as a key negative regulator of both insulin and leptin signaling pathways. Using an NMR-based screening approach with 15N- and 13C-labeled PTP1B, we have identified 2,3-dimethylphenyloxalylaminobenzoic acid (1) as a general, reversible, and competitive PTPase inhibitor. Structure-based approach guided by X-ray crystallography facilitated the development of 1 into a novel series of potent and selective PTP1B inhibitors occupying both the catalytic site and a portion of the noncatalytic, second phosphotyrosine binding site. Interestingly, oral biovailability has been observed in rats for some compounds. Furthermore, we demonstrated in vivo plasma glucose lowering effects with compound 12d in ob/ob mice.

  • Organizational Affiliation

    Metabolic Disease Research and Advanced Technology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064-6098, USA. gang.liu@abbott.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein-tyrosine phosphatase, non-receptor type 1321Homo sapiensMutation(s): 0 
Gene Names: PTPN1 OR PTP1B
UniProt & NIH Common Fund Data Resources
Find proteins for P18031 (Homo sapiens)
Explore P18031 
Go to UniProtKB:  P18031
GTEx:  ENSG00000196396 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP18031
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 968

Download Ideal Coordinates CCD File 
C19 H13 N O6
Binding Affinity Annotations 
IDSourceBinding Affinity
968 BindingDB:  1ONZ Ki: min: 1.70e+4, max: 2.51e+4 (nM) from 2 assay(s)
Kd: 8000 (nM) from 1 assay(s)
PDBBind:  1ONZ Kd: 8000 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.226 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.614α = 90
b = 88.614β = 90
c = 105.167γ = 120
Software Package:
Software NamePurpose
MAR345data collection
HKL-2000data scaling

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2003-05-20
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2023-08-16
    Changes: Data collection, Database references, Derived calculations, Refinement description