6H0U

Glycogen synthase kinase-3 beta (GSK3) complex with a covalent [1,2,4]triazolo[1,5-a][1,3,5]triazine inhibitor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.195 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

A Triazolotriazine-Based Dual GSK-3 beta /CK-1 delta Ligand as a Potential Neuroprotective Agent Presenting Two Different Mechanisms of Enzymatic Inhibition.

Redenti, S.Marcovich, I.De Vita, T.Perez, C.De Zorzi, R.Demitri, N.Perez, D.I.Bottegoni, G.Bisignano, P.Bissaro, M.Moro, S.Martinez, A.Storici, P.Spalluto, G.Cavalli, A.Federico, S.

(2019) ChemMedChem 14: 310-314

  • DOI: https://doi.org/10.1002/cmdc.201800778
  • Primary Citation of Related Structures:  
    6H0U

  • PubMed Abstract: 

    Glycogen synthase kinase 3β (GSK-3β) and casein kinase 1δ (CK-1δ) are emerging targets for the treatment of neuroinflammatory disorders, including Parkinson's disease. An inhibitor able to target these two kinases was developed by docking-based design. Compound 12, 3-(7-amino-5-(cyclohexylamino)-[1,2,4]triazolo[1,5-a][1,3,5]triazin-2-yl)-2-cyanoacrylamide, showed combined inhibitory activity against GSK-3β and CK-1δ [IC 50 (GSK-3β)=0.17 μm; IC 50 (CK-1δ)=0.68 μm]. In particular, classical ATP competition was observed against CK-1δ, and a co-crystal of compound 12 inside GSK-3β confirmed a covalent interaction between the cyanoacrylamide warhead and Cys199, which could help in the development of more potent covalent inhibitors of GSK-3β. Preliminary studies on in vitro models of Parkinson's disease revealed that compound 12 is not cytotoxic and shows neuroprotective activity. These results encourage further investigations to validate GSK-3β/CK-1δ inhibition as a possible new strategy to treat neuroinflammatory/degenerative diseases.


  • Organizational Affiliation

    Department of Chemical and Pharmaceutical Sciences, University of Trieste, Via Licio Giorgeri 1, 34127, Trieste, Italy.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycogen synthase kinase-3 beta
A, B
420Homo sapiensMutation(s): 0 
Gene Names: GSK3B
EC: 2.7.11.26 (PDB Primary Data), 2.7.11.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P49841 (Homo sapiens)
Explore P49841 
Go to UniProtKB:  P49841
PHAROS:  P49841
GTEx:  ENSG00000082701 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP49841
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FKB (Subject of Investigation/LOI)
Query on FKB

Download Ideal Coordinates CCD File 
C [auth A],
F [auth B]
(2~{R})-3-[7-azanyl-5-(cyclohexylamino)-[1,2,4]triazolo[1,5-a][1,3,5]triazin-2-yl]-2-cyano-propanamide
C14 H19 N9 O
PQPBZNWOHODPRV-MRVPVSSYSA-N
MLI
Query on MLI

Download Ideal Coordinates CCD File 
D [auth A]MALONATE ION
C3 H2 O4
OFOBLEOULBTSOW-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
E [auth A],
G [auth B],
H [auth B]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
CL
Query on CL

Download Ideal Coordinates CCD File 
I [auth B],
J [auth B]
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
NA
Query on NA

Download Ideal Coordinates CCD File 
K [auth B]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
CL BindingDB:  6H0U EC50: 3.00e+6 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.803α = 90
b = 94.542β = 90
c = 106.579γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Aimlessdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-05-15
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Data collection, Database references, Refinement description