6V6L

Co-structure of human glycogen synthase kinase beta with 1-(6-((2-((6-amino-5-nitropyridin-2-yl)amino)ethyl)amino)-2-(2,4-dichlorophenyl)pyridin-3-yl)-4-methylpiperazin-2-one


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.204 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 2.3 of the entry. See complete history


Literature

Discovery and optimization of novel pyridines as highly potent and selective glycogen synthase kinase 3 inhibitors.

Ramurthy, S.Pfister, K.B.Boyce, R.S.Brown, S.P.Costales, A.Q.Desai, M.C.Fang, E.Levine, B.H.Ng, S.C.Nuss, J.M.Ring, D.B.Shafer, C.M.Shu, W.Subramanian, S.Wagman, A.S.Wang, H.Bussiere, D.E.

(2020) Bioorg Med Chem Lett 30: 126930-126930

  • DOI: https://doi.org/10.1016/j.bmcl.2019.126930
  • Primary Citation of Related Structures:  
    6V6L

  • PubMed Abstract: 

    Glycogen synthase kinase-3 plays an essential role in multiple biochemical pathways in the cell, particularly in regards to energy regulation. As such, Glycogen synthase kinase-3 is an attractive target for pharmacological intervention in a variety of disease states, particularly non-insulin dependent diabetes mellitus. However, due to homology with other crucial kinases, such as the cyclin-dependent protein kinase CDC2, developing compounds that are both potent and selective is challenging. A novel series of derivatives of 5-nitro-N2-(2-(pyridine-2ylamino)ethyl)pyridine-2,6-diamine were synthesized and have been shown to potently inhibit glycogen synthase kinase-3 (GSK3). Potency in the low nanomolar range was obtained along with remarkable selectivity. The compounds activate glycogen synthase in insulin receptor-expressing CHO-IR cells and in primary rat hepatocytes, and have acceptable pharmacokinetics and pharmacodynamics to allow for oral dosing. The X-ray co-crystal structure of human GSK3-β in complex with compound 2 is reported and provides insights into the structural determinants of the series responsible for its potency and selectivity.


  • Organizational Affiliation

    HiberCell, Inc., 619 West 54th Street, New York, NY 10019, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycogen synthase kinase-3 beta420Homo 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 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
QQA (Subject of Investigation/LOI)
Query on QQA

Download Ideal Coordinates CCD File 
B [auth A]1-(6-((2-((6-amino-5-nitropyridin-2-yl)amino)ethyl)amino)-2-(2,4-dichlorophenyl)pyridin-3-yl)-4-methylpiperazin-2-one
C23 H24 Cl2 N8 O3
KLSRELDSEJWOAS-UHFFFAOYSA-N
PO4
Query on PO4

Download Ideal Coordinates CCD File 
C [auth A]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
PTR
Query on PTR
A
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.204 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.08α = 90
b = 64.76β = 100.13
c = 58.25γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
PDB_EXTRACTdata extraction
xia2data reduction
xia2data scaling
CrystalCleardata collection
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-15
    Type: Initial release
  • Version 1.1: 2020-01-29
    Changes: Database references
  • Version 1.2: 2020-02-05
    Changes: Database references
  • Version 2.0: 2022-06-29
    Changes: Database references, Non-polymer description, Structure summary
  • Version 2.1: 2023-10-11
    Changes: Data collection, Refinement description
  • Version 2.2: 2023-11-15
    Changes: Data collection
  • Version 2.3: 2024-11-20
    Changes: Structure summary