EM127 [Ligand Id: 13979] activity data from GtoPdb and ChEMBL

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ChEMBL ligand: CHEMBL5439323
  • SET and MYND domain containing 3/Histone-lysine N-methyltransferase SMYD3 in Human [ChEMBL: CHEMBL2321643] [GtoPdb: 3313] [UniProtKB: Q9H7B4]
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DB Assay description Assay Type Standard value Standard parameter Original value Original units Original parameter Reference
SET and MYND domain containing 3/Histone-lysine N-methyltransferase SMYD3 in Human (target type: SINGLE PROTEIN) [ChEMBL: CHEMBL2321643] [GtoPdb: 3313] [UniProtKB: Q9H7B4]
ChEMBL Binding affinity to full length recombinant SMYD3 (unknown origin) overexpressed in Escherichia coli Rosetta cells assessed as dissociation constant by SPR analysis B 4.89 pKd 13000 nM Kd Eur J Med Chem (2022) 243: 114683-114683 [PMID:36116234]
GtoPdb - - 5.21 pKi 6110 nM Ki Eur J Med Chem (2022) 243: 114683 [PMID:36116234]
ChEMBL Binding affinity to full length recombinant SMYD3 (unknown origin) overexpressed in Escherichia coli Rosetta cells assessed as inhibition constant measured after 1 hr by LC-MS analysis B 5.21 pKi 6110 nM Ki Eur J Med Chem (2022) 243: 114683-114683 [PMID:36116234]
ChEMBL SMYD3 biochemical assay: The assays were all performed in a buffer consisting of 25 mM Tris-Cl pH 8.0, 1 mM TCEP, 0.005% BSG, and 0.005% Tween 20, prepared on the day of use. Compounds in 100% DMSO (1 ul) were spotted into a 384-well white opaque OptiPlate using a Bravo automated liquid handling platform outfitted with a 384-channel head (Agilent Technologies). DMSO (1 ul) was added to Columns 11, 12, 23, 24, rows A-H for the maximum signal control and 1 ul of SAH, a known product and inhibitor of SMYD3, was added to columns 11, 12, 23, 24, rows I-P for the minimum signal control. A cocktail (40 ul) containing the SMYD3 enzyme was added by Multidrop Combi (Thermo-Fisher). The compounds were allowed to incubate with SMYD3 for 30 min at room temperature, then a cocktail (10 ul) containing SAM and MEKK2 was added to initiate the reaction (final volume=51 ul). The final concentrations of the components were as follows: SMYD3 was 0.4 nM, 3H-SAM was 8 nM, MEKK2 was 12 nM, SAH in the minimum signal control wells was 1 mM, and the DMSO concentration was 2%. The assays were stopped by the addition of non-radiolabeled SAM (10 ul) to a final concentration of 100 uM, which dilutes the 3H-SAM to a level where its incorporation into MEKK2 is no longer detectable. Radiolabeled MEKK2 was detected using a scintillation proximity assay (SPA). 10 uL of a 10 mg/mL solution of SPA beads in 0.5 M citric acid was added and the plates centrifuged at 600 rpm for 1 min to precipitate the radiolabeled MEKK2 onto the SPA beads. The plates were then read in a PerkinElmer TopCount plate reader to measure the quantity of 3H-labeled MEKK2 as disintegrations per minute (dpm) or alternatively, referred to as counts per minute (cpm). B 4.48 pIC50 33495 nM IC50 US-10179773-B2. Isoxazole carboxamides as irreversible SMYD inhibitors (2019)
ChEMBL SMYD3 Enzyme Assays on MEKK2 Protein Substrate : The assays were an performed in a buffer consisting of 25 mM Tris-Cl pH 8.0, 1 mM TCEP, 0.005% BSG, and 0.005% Tween 20, prepared on the day of use. Compounds in 100% DMSO (1 ul) were spotted into a 384-well white opaque OptiPlate using a Bravo automated liquid handling platform outfitted with a 384-channel head (Agilent Technologies), DMSO (1 ul) was added to Columns 11, 12, 23. 24, rows A-H for the maximum signal control and 1 ul of SAH, a known product and inhibitor of SMYD3, was added to columns 11, 12, 23, 24, rows I-P for the minimum signal control. A cocktail (40 ul) containing the SMYD3 enzyme was added by Multidrop Combi (Thermo-Fisher). The compounds were allowed to incubate with SMYD3 for 30 min at room temperature, then a cocktail (10 ul) containing SAM and MEKK2 was added to initiate the reaction (final volume=51 ul). The final concentrations of the components were as follows: SMYD3 was 0.4 nM, 3H-SAM was 8 nM, MEKK2 was 12 nM, SAH in the minimum signal control wells was 1 mM, and the DMSO concentration was 2%. The assays were stopped by the addition of non-radiolabeled SAM (10 ul) to a final concentration of 100 uM, which dilutes the 3H-SAM to a level where its incorporation into MEKK2 is no longer detectable. Radiolabeled MEKK2 was detected using a scintillation proximity assay (SPA). 10 uL of a 10 mg/mL solution of SPA beads in 0.5 M citric acid was added and the plates centrifuged at 600 rpm fort min to precipitate the radiolabeled MEKK2 onto the SPA beads. The plates were then read in a PerkinElmer TopCount plate reader to measure the quantity of 3H-labeled MEKK2 as disintegrations per minute (dpm) or alternatively, referred to as counts per minute (cpm).% ⁢ ⁢ inhibition ⁢ ⁢ calculation % ⁢ ⁢ inh = 100 - ( dpm cmpd - dpm min dpm max - dpm min ) × 100Where dpm=disintegrations per minute, cmpd=signal in assay well, and min and max are the respective minimum and maximum signal controls.Four ⁢ - ⁢ parameter ⁢ ⁢ ⁢ IC ⁢ ⁢ 50 ⁢ ⁢ fit Y = Bottom + ( Top - Bottom ) ( 1 + ( X IC 50 ) ⁢ ⁢ Hill ⁢ ⁢ CoefficientWhere top and bottom are the normally allowed to float, but may be fixed at 100 or 0 respectively in a 3-parameter fit. The Hill Coefficient normally allowed to float but may also be fixed at 1 in a 3-parameter fit. Y is the % inhibition and X is the compound concentration. B 4.48 pIC50 33495 nM IC50 US-10669243-B2. Isoxazole carboxamides as irreversible SMYD inhibitors (2020)
ChEMBL Inhibition of full length recombinant SMYD3 (unknown origin) measured at 24 hrs B 6.43 pIC50 370 nM IC50 Eur J Med Chem (2022) 243: 114683-114683 [PMID:36116234]

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]