Crystal structure of GSK3b in complex with Compound 15: 2-[(cyclopropylcarbonyl)amino]-N-(4-methoxypyridin-3-yl)pyridine-4-carboxamide

Experimental Data Snapshot

  • Resolution: 2.51 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report

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Discovery of Isonicotinamides as Highly Selective, Brain Penetrable, and Orally Active Glycogen Synthase Kinase-3 Inhibitors.

Luo, G.Chen, L.Burton, C.R.Xiao, H.Sivaprakasam, P.Krause, C.M.Cao, Y.Liu, N.Lippy, J.Clarke, W.J.Snow, K.Raybon, J.Arora, V.Pokross, M.Kish, K.Lewis, H.A.Langley, D.R.Macor, J.E.Dubowchik, G.M.

(2016) J Med Chem 59: 1041-1051

  • DOI: https://doi.org/10.1021/acs.jmedchem.5b01550
  • Primary Citation of Related Structures:  
    5F94, 5F95

  • PubMed Abstract: 

    GSK-3 is a serine/threonine kinase that has numerous substrates. Many of these proteins are involved in the regulation of diverse cellular functions, including metabolism, differentiation, proliferation, and apoptosis. Inhibition of GSK-3 may be useful in treating a number of diseases including Alzheimer's disease (AD), type II diabetes, mood disorders, and some cancers, but the approach poses significant challenges. Here, we present a class of isonicotinamides that are potent, highly kinase-selective GSK-3 inhibitors, the members of which demonstrated oral activity in a triple-transgenic mouse model of AD. The remarkably high kinase selectivity and straightforward synthesis of these compounds bode well for their further exploration as tool compounds and therapeutics.

  • Organizational Affiliation

    Bristol-Myers Squibb Research & Development, Bristol-Myers Squibb Company , 5 Research Parkway, Wallingford, Connecticut 06492, United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycogen synthase kinase-3 beta
A, B
350Homo sapiensMutation(s): 0 
Gene Names: GSK3B
EC: (PDB Primary Data), (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P49841 (Homo sapiens)
Explore P49841 
Go to UniProtKB:  P49841
PHAROS:  P49841
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP49841
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 3UO

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
C16 H16 N4 O3
Binding Affinity Annotations 
IDSourceBinding Affinity
3UO BindingDB:  5F94 IC50: 3.4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.51 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83α = 90
b = 82.91β = 90
c = 177.348γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-03
    Type: Initial release
  • Version 1.1: 2016-02-24
    Changes: Database references