2Y0J

Triazoloquinazolines as a novel class of phosphodiesterase 10A (PDE10A) inhibitors, part 2, Lead-optimisation.

• PDB DOI:  https://doi.org/10.2210/pdb2Y0J/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2010-12-03 Released: 2011-06-15 
• Deposition Author(s): Kehler, J., Ritzen, A., Langgard, M., Petersen, S.L., Christoffersen, C.T., Nielsen, J., Kilburn, J.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 0.284 
• R-Value Work: 0.221 
• R-Value Observed: 0.224 

Literature

Triazoloquinazolines as a Novel Class of Phosphodiesterase 10A (Pde10A) Inhibitors.

Kehler, J., Ritzen, A., Langgard, M., Petersen, S.L., Farah, M.M., Bundgaard, C., Christoffersen, C.T., Nielsen, J., Kilburn, J.P.

(2011) Bioorg Med Chem Lett 21: 3738

• PubMed: 21602043 
• DOI: https://doi.org/10.1016/j.bmcl.2011.04.067
• Primary Citation of Related Structures:  
  2Y0J


• PubMed Abstract: 
  

Novel triazoloquinazolines have been found as phosphodiesterase 10A (PDE10A) inhibitors. Structure-activity studies improved the initial micromolar potency which was found in the lead compound by a 100-fold identifying 5-(1H-benzoimidazol-2-ylmethylsulfanyl)-2-methyl-[1,2,4]triazolo[1,5-c]quinazoline, 42 (PDE10A IC(50)=12 nM) as the most potent compound from the series. Two X-ray structures revealed novel binding modes to the catalytic site of the PDE10A enzyme.

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Organizational Affiliation: 

H. Lundbeck A/S, Department of Discovery Chemistry & DMPK, Valby, Denmark. [e-mail]

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 80.13 kDa 
• Atom Count: 5,315 
• Modelled Residue Count: 628 
• Deposited Residue Count: 680 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CAMP AND CAMP-INHIBITED CGMP 3', 5'-CYCLIC PHOSPHODIESTERASE 10A	A, B	340	Homo sapiens	Mutation(s): 0  Gene Names: PDE10A EC: 3.1.4.17
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y233 (Homo sapiens) Explore Q9Y233  Go to UniProtKB:  Q9Y233
PHAROS:  Q9Y233

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
AXC	C [auth A], F [auth B]	5-(1H-BENZIMIDAZOL-2-YLMETHYLSULFANYL)-2-METHYL-[1,2,4]TRIAZOLO[1,5-C]QUINAZOLINE C18 H14 N6 S VVYNKZKNFFKZDW-UHFFFAOYSA-N
ZN	D [auth A], G [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG	E [auth A], H [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
AXC	PDBBind:  2Y0J	IC50: 12 (nM) from 1 assay(s)
	BindingDB:  2Y0J	IC50: 12 (nM) from 1 assay(s)
	Binding MOAD:  2Y0J	IC50: 12 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 0.284 
• R-Value Work: 0.221 
• R-Value Observed: 0.224 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.38	α = 90
b = 81.69	β = 90
c = 160.62	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-06-15 
Deposition Author(s): Kehler, J., Ritzen, A., Langgard, M., Petersen, S.L., Christoffersen, C.T., Nielsen, J., Kilburn, J.P.

Revision History  

• Version 1.0: 2011-06-15
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance