ChEMBL ligand: CHEMBL3603923
mGlu5 receptor/Metabotropic glutamate receptor 5 in Human [ChEMBL: CHEMBL3227] [GtoPdb: 293] [UniProtKB: P41594] There should be some charts here, you may need to enable JavaScript!
Kv11.1/Voltage-gated inwardly rectifying potassium channel KCNH2 in Human [ChEMBL: CHEMBL240] [GtoPdb: 572] [UniProtKB: Q12809] There should be some charts here, you may need to enable JavaScript!

DB	Assay description	Assay Type	Standard value	Standard parameter	Original value	Original units	Original parameter	Reference
mGlu5 receptor/Metabotropic glutamate receptor 5 in Human (target type: SINGLE PROTEIN) [ChEMBL: CHEMBL3227] [GtoPdb: 293] [UniProtKB: P41594]
GtoPdb	Determined in a [3H]-M-MPEP competition radioligand binding assay	-	9.27	pKi	0.54	nM	Ki	WO2015008073A1. 4-(3-cyanophenyl)-6-pyridinylpyrimidine mglu5 modulators (2015)
ChEMBL	[3H]-M-MPEP Radioligand Binding Assay: After thawing, membrane homogenates were re-suspended in the binding buffer (50 mM HEPES pH 7.5, 150 mM NaCl) to a final assay concentration of 2.5 μg protein per well. Saturation isotherms were determined by the addition of various concentrations (0-50 nM) of [3H]-M-MPEP (Gasparini et al. Bioorg. Med. Chem Lett. 2002, 12, 407-409) in a total reaction volume of 250 μL for 90 min at rt. At the end of the incubation, membranes were filtered onto a 96-well GF/B filter pre-incubated with 0.1% polyethylenimine, with a Tomtec cell harvester and washed 5 times with 0.5 mL distilled water. Non-specific binding (NSB) was measured in the presence of 0.1 mM MPEP hydrochloride (Tocris bioscience, catalogue number 1212). Radioactivity on the filter was counted (1 min) on a microbeta counter after addition of 50 μL of scintillation fluid. For competition binding experiments, membranes were incubated with [3H]-M-MPEP at a concentration equal to the KD value of the radioligand and 10 concentrations of the inhibitory compound (typically between the ranges of 0.1 mM-3.16 pM). IC50 values were derived from the inhibition curve and the equilibrium dissociation constant (Ki) values were calculated using the Cheng-Prussoff equation. The pKi values (where pKi=−log10 Ki) of certain compounds of the invention are tabulated below.	B	9.27	pKi	0.54	nM	Ki	US-10246432-B2. 4-(3-cyanophenyl)-6-pyridinylpyrimidine mGlu5 modulators (2019)
ChEMBL	[3H]-M-MPEP Radioligand Binding Assay: Membrane PreparationcDNA encoding the human mGlu5 receptor was transfected into HEK293 cells using the transfection reagent Genejuice (Novagen). Forty-eight hours after transfection, cells were harvested and washed twice with ice cold phosphate-buffered saline. The pellet was re-suspended in ice-cold buffer containing 20 mM Tris-HCl, pH 7.4, 1 mM EDTA and homogenised with an Ultraturax for 30 s at maximum speed. The suspension was centrifuged (800×g for 5 min at 4° C.) and supernatant collected. Supernatant was centrifuged (40,000×g for 30 min at 4° C.). The resulting pellet was re-suspended and frozen at −80° C. before use. Protein concentration was determined using the BCA protein assay method (Merck Chemicals Ltd).[3H]-M-MPEP Radioligand Binding AssayAfter thawing, membrane homogenates were re-suspended in the binding buffer (50 mM HEPES pH 7.5, 150 mM NaCl) to a final assay concentration of 2.5 μg protein per well. Saturation isotherms were determined by the addition of various concentrations (0-50 nM) of [3H]-M-MPEP (Gasparini et al. Bioorg. Med Chem. Lett. 2002, 12, 407-409) in a total reaction volume of 250 μL for 90 min at rt. At the end of the incubation, membranes were filtered onto a 96-well GF/B filter pre-incubated with 0.1% polyethylenimine, with a Tomtec cell harvester and washed 5 times with 0.5 mL distilled water. Non-specific binding (NSB) was measured in the presence of 0.1 mM MPEP hydrochloride (Tocris bioscience, catalogue number 1212). Radioactivity on the filter was counted (1 min) on a microbeta counter after addition of 50 μL of scintillation fluid. For competition binding experiments, membranes were incubated with [3H]-M-MPEP at a concentration equal to the KD value of the radioligand and 10 concentrations of the inhibitory compound (typically between the ranges of 0.1 mM-3.16 pM). IC50 values were derived from the inhibition curve and the equilibrium dissociation constant (Ki) values were calculated using the Cheng-Prussoff equation.	B	9.27	pKi	0.54	nM	Ki	US-10584111-B2. 4-(3-cyanophenyl)-6-pyridinylpyrimidine mGlu5 modulators (2020)
ChEMBL	Radioligand Binding Assay: After thawing, membrane homogenates were re-suspended in the binding buffer (50 mM HEPES pH 7.5, 150 mM NaCl) to a final assay concentration of 2.5 μg protein per well. Saturation isotherms were determined by the addition of various concentrations (0-50 nM) of [3H]-M-MPEP in a total reaction volume of 250 μL for 90 min at rt. At the end of the incubation, membranes were filtered onto a 96-well GF/B filter pre-incubated with 0.1% polyethylenimine, with a Tomtec cell harvester and washed 5 times with 0.5 mL distilled water. Non-specific binding (NSB) was measured in the presence of 0.1 mM MPEP hydrochloride (Tocris bioscience, catalogue number 1212). Radioactivity on the filter was counted (1 min) on a microbeta counter after addition of 50 μL of scintillation fluid. For competition binding experiments, membranes were incubated with [3H]-M-MPEP at a concentration equal to the KD value of the radioligand and 10 concentrations of the inhibitory compound (typically between the ranges of 0.1 mM-3.16 pM). IC50 values were derived from the inhibition curve and the equilibrium dissociation constant (Ki) values were calculated using the Cheng-Prussoff equation.	B	9.27	pKi	0.54	nM	Ki	US-11584732-B2. Methods of treatment using 4-(3-cyanophenyl)-6-pyridinylpyrimidine mGlu5 modulators (2023)
ChEMBL	Displacement of [3H]-M-MPEP from human mGlu5 receptor expressed in HEK293 cells after 90 mins by scintillation spectroscopy analysis	B	9.3	pKi	0.5	nM	Ki	J Med Chem (2015) 58: 6653-6664 [PMID:26225459]
ChEMBL	Negative allosteric modulation at human mGlu5 receptor expressed in HEK293 cells assessed as inhibition of L-quisqualic acid-induced inositol phosphate turnover preincubated for 45 mins before L-quisqualic acid challenge measured after 15 mins by IPone assay	F	9.2	pIC50	0.63	nM	IC50	J Med Chem (2015) 58: 6653-6664 [PMID:26225459]
ChEMBL	Inhibition of mGLU5 (unknown origin)	B	9.3	pIC50	0.5	nM	IC50	J Med Chem (2019) 62: 3036-3050 [PMID:30807144]
Kv11.1/Voltage-gated inwardly rectifying potassium channel KCNH2 in Human (target type: SINGLE PROTEIN) [ChEMBL: CHEMBL240] [GtoPdb: 572] [UniProtKB: Q12809]
ChEMBL	Inhibition of human ERG	B	5.5	pIC50	>3162.28	nM	IC50	J Med Chem (2015) 58: 6653-6664 [PMID:26225459]

ChEMBL data shown on this page come from version 36:

Zdrazil B, Felix E, Hunter F, Manners EJ, Blackshaw J, Corbett S, de Veij M, Ioannidis H, Lopez DM, Mosquera JF, Magarinos MP, Bosc N, Arcila R, Kizilören T, Gaulton A, Bento AP, Adasme MF, Monecke P, Landrum GA, Leach AR. (2024). The ChEMBL Database in 2023: a drug discovery platform spanning multiple bioactivity data types and time periods. Nucleic Acids Res., 52(D1). DOI: 10.1093/nar/gkad1004. [EPMCID:10767899] [PMID:37933841]
Davies M, Nowotka M, Papadatos G, Dedman N, Gaulton A, Atkinson F, Bellis L, Overington JP. (2015) 'ChEMBL web services: streamlining access to drug discovery data and utilities.' Nucleic Acids Res., 43(W1). DOI: 10.1093/nar/gkv352. [EPMCID:25883136]