5HLN

X-RAY CRYSTAL STRUCTURE OF GSK3B IN COMPLEX WITH CHIR99021

• PDB DOI:  https://doi.org/10.2210/pdb5HLN/pdb

• Classification: TRANSFERASE/TRANSFERASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2016-01-15 Released: 2016-05-25 
• Deposition Author(s): White, A., Lakshminarasimhan, D., Nadupalli, A., Suto, R.K.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.10 Å
• R-Value Free: 0.236 
• R-Value Work: 0.170 
• R-Value Observed: 0.173 

Literature

Inhibitors of Glycogen Synthase Kinase 3 with Exquisite Kinome-Wide Selectivity and Their Functional Effects.

Wagner, F.F., Bishop, J.A., Gale, J.P., Shi, X., Walk, M., Ketterman, J., Patnaik, D., Barker, D., Walpita, D., Campbell, A.J., Nguyen, S., Lewis, M., Ross, L., Weiwer, M., An, W.F., Germain, A.R., Nag, P.P., Metkar, S., Kaya, T., Dandapani, S., Olson, D.E., Barbe, A.L., Lazzaro, F., Sacher, J.R., Cheah, J.H., Fei, D., Perez, J., Munoz, B., Palmer, M., Stegmaier, K., Schreiber, S.L., Scolnick, E., Zhang, Y.L., Haggarty, S.J., Holson, E.B., Pan, J.Q.

(2016) ACS Chem Biol 11: 1952-1963

• PubMed: 27128528 
• DOI: https://doi.org/10.1021/acschembio.6b00306
• Primary Citation of Related Structures:  
  5HLN, 5HLP


• PubMed Abstract: 
  

The mood stabilizer lithium, the first-line treatment for bipolar disorder, is hypothesized to exert its effects through direct inhibition of glycogen synthase kinase 3 (GSK3) and indirectly by increasing GSK3's inhibitory serine phosphorylation. GSK3 comprises two highly similar paralogs, GSK3α and GSK3β, which are key regulatory kinases in the canonical Wnt pathway. GSK3 stands as a nodal target within this pathway and is an attractive therapeutic target for multiple indications. Despite being an active field of research for the past 20 years, many GSK3 inhibitors demonstrate either poor to moderate selectivity versus the broader human kinome or physicochemical properties unsuitable for use in in vitro systems or in vivo models. A nonconventional analysis of data from a GSK3β inhibitor high-throughput screening campaign, which excluded known GSK3 inhibitor chemotypes, led to the discovery of a novel pyrazolo-tetrahydroquinolinone scaffold with unparalleled kinome-wide selectivity for the GSK3 kinases. Taking advantage of an uncommon tridentate interaction with the hinge region of GSK3, we developed highly selective and potent GSK3 inhibitors, BRD1652 and BRD0209, which demonstrated in vivo efficacy in a dopaminergic signaling paradigm modeling mood-related disorders. These new chemical probes open the way for exclusive analyses of the function of GSK3 kinases in multiple signaling pathways involved in many prevalent disorders.

---

Organizational Affiliation: 

Chemical Neurobiology Laboratory, Departments of Neurology & Psychiatry, Massachusetts General Hospital, Harvard Medical School , Boston, Massachusetts 02215, United States.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 95.73 kDa 
• Atom Count: 5,652 
• Modelled Residue Count: 694 
• Deposited Residue Count: 848 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glycogen synthase kinase-3 beta	A, B	424	Homo sapiens	Mutation(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

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
65C	C [auth A], F [auth B]	CHIR99021 C22 H18 Cl2 N8 AQGNHMOJWBZFQQ-UHFFFAOYSA-N
MES	E [auth A], H [auth B]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
MG	D [auth A], G [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PTR	A, B	L-PEPTIDE LINKING	C9 H12 N O6 P		TYR

Binding Affinity Annotations
ID	Source	Binding Affinity
65C	BindingDB:  5HLN	IC50: min: 2, max: 30 (nM) from 5 assay(s)
		EC50: 1500 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.10 Å
• R-Value Free: 0.236 
• R-Value Work: 0.170 
• R-Value Observed: 0.173 
• Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 163.521	α = 90
b = 163.521	β = 90
c = 84.93	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-05-25 
Deposition Author(s): White, A., Lakshminarasimhan, D., Nadupalli, A., Suto, R.K.

Revision History  

• Version 1.0: 2016-05-25
  Type: Initial release
  
• Version 1.1: 2016-07-27
  Changes: Database references