lovingscience/chembl-v37-raw-activities huggingface dataset:
Compound (SMILES): CC[C@@H](NC(=O)c1cc(C(=O)N2CCC[C@@H]2C)c2n1CCOC2)c1ccccc1Cl
InChIKey: CHNZTBOCAMRXQQ-HNAYVOBHSA-N
Target: Potassium channel subfamily K member 3 (SINGLE PROTEIN), Homo sapiens
UniProt: O14649
Assay: TASK-1 Inhibiition Assay: Human TASK-1 channels were expressed in Xenopus oocytes. For this purpose, oocytes were isolated from Xenopus laevis and defoliculated. Subsequently, TASK-1-encoding RNA synthesized in vitro was injected into the oocytes. After two days of TASK-1 protein expression, TASK-1 currents were measured by two-microelectrode voltage clamp. Data were acquired and analyzed using a TEC-10cx amplifier (NPI Electronic, Tamm, Germany) connected to an ITC-16 interface (Instrutech Corp., Long Island, USA) and Pulse software (HEKA Elektronik, Lambrecht, Germany). Oocytes were clamped to -90 mV and TASK-1 mediated currents were measured during 500 ms voltage pulses to 40 mV. Oocytes were continuously superfused with ND96 buffer containing 96 mM sodium chloride, 2 mM potassium chloride, 1.8 mM calcium chloride, 1 mM magnesium chloride, 5 mM 4-(2-hydroxyethyl)-piperazine-1-ethanesulfonic acid (HEPES; pH adjusted to 7.4 with sodium hydroxide). All experiments were performed at room temperature.
Measurement: IC50 = 90 nM (pChEMBL 7.050000190734863)
Descriptors: MW 429.95, ALogP 4.18, HBA 4, HBD 1, PSA 63.57, QED 0.78
Compound (SMILES): Fc1ccc(-c2n[nH]c3ccc(NCc4cccnc4)cc23)cc1
InChIKey: DXERUGZTFNPWGA-UHFFFAOYSA-N
Target: Mitogen-activated protein kinase 9 (SINGLE PROTEIN), Homo sapiens
UniProt: P45984
Assay: Inhibition of His6-tagged JNK2 (unknown origin) assessed as reduction in c-Jun phosphorylation using GST-c-Jun (1 to 79 residues) and [gamma32P]ATP incubated for 1 hr by scintillation counting assay
Measurement: IC50 <= 10000 nM (pChEMBL 5)
Descriptors: MW 318.36, ALogP 4.38, HBA 3, HBD 2, PSA 53.6, QED 0.59
Compound (SMILES): O=C(c1ccc2cc(Oc3ccc(C(F)(F)F)cn3)ccc2n1)N1CC(Oc2ccc(Br)cc2)C1
InChIKey: ATBZVMOOFLIUIT-UHFFFAOYSA-N
Target: Sodium channel protein type 9 subunit alpha (SINGLE PROTEIN), Homo sapiens
UniProt: Q15858
Assay: FRET-Based Membrane Potential Assay: Two days prior to the experiment, frozen HEK293 cells stably expressing recombinant human Nav1.7 were quickly thawed and plated at 25,000 cells/well in growth medium [DMEM (Invitrogen #11965) with 10% HI FBS (Invitrogen #10082), 2 mM glutamine, 100 units/mL penicillin, 0.1 mg/mL streptomycin (PSG, Sigma #G1146), and 500 ug/mL Geneticin (Invitrogen #10131)] in black-walled, clear-bottom 384-well poly-D-lysine-coated assay plates (Greiner Bio-One, Frickenhausen, Germany) and incubated in a humidified 5% CO2 incubator at 37° C. On the day of the assay, medium was removed by aspiration, and cells were washed with assay buffer [HBSS (Invitrogen, Carlsbad, Calif.) containing 20 mM HEPES (Invitrogen, Carlsbad, Calif.)]. After washing, 30 uL assay buffer containing the fluorescent voltage-sensor probe CC2-DMPE (Invitrogen, Carlsbad, Calif.) at 20 uM and 0.01% pluronic F-127 (Invitrogen, Carlsbad, Calif.) was added to the cells. Cells were incubated for 40 minutes at room temperature in the dark. Following the incubation, the cells were washed and 30 uL assay buffer containing 2.5 uM DiSBAC2(3) substrate (Invitrogen, Carlsbad, Calif.) and 0.5 mM VABSC-1 (Invitrogen, Carlsbad, Calif.) was added to the cells. The cells were incubated for 90 minutes at room temperature in the dark. Fluorescence readings were made using a FLIPR TETRA (Molecular Devices, Sunnyvale Calif.) equipped with voltage-sensor probe optics. At the start of each experiment the optimal (EC80) concentration of depolarizing agent (veratridine) was determined by testing a dilution curve of assay buffer containing veratridine (Sigma-Aldrich, St. Louis, Mo.) and 1 mg/mL scorpion venom (SVqq, from Leiurus quinquestriatus; Sigma-Aldrich, St. Louis, Mo.). Compounds were dissolved in dimethyl sulfoxide, and 8-point, 1:3 dilution concentration-response curves were prepared in duplicate in dimethyl sulfoxide, followed by preparation of 0.8 uL/well daughter plates of the dilutions. Test compounds in the daughter plate were diluted to (Ë¿3x) solutions in assay buffer immediately before assaying. Using the FLIPR TETRA, 20 uL of the (3x) compound solutions were first added to the cells, then 20 uL of depolarizing solution (3xEC80 veratridine+SVqq) were added 3 minutes later to activate the channel. Changes in fluorescence were measured at wavelengths of 440-480 nm and 565-625 nm over the course of the experimental run. Membrane depolarization was expressed as a ratio of the maximum F440-480 nm/F565-625 nm reading above average baseline F440-480 nm/F565-625 nm reading. IC50 values were calculated from curve fits of the ratio data using a four-parameter logistic Hill equation (Accelrys Assay Explorer 3.3 Client, Accelrys, San Diego, Calif.) with percent inhibition plotted against compound concentration.
Measurement: IC50 > 20000 nM (pChEMBL 4.698999881744385)
Descriptors: MW 544.33, ALogP 6.11, HBA 5, HBD 0, PSA 64.55, QED 0.3
Compound (SMILES): C[C@H](n1cnnc1-c1nc(NC(=O)c2cc(-n3cnc(C4CC4)c3)c(N3CC(C)(C#N)C3)cn2)cs1)C(F)(F)F
InChIKey: IXEYSARKPAVONO-AWEZNQCLSA-N
Target: Mitogen-activated protein kinase kinase kinase 5 (SINGLE PROTEIN), Homo sapiens
UniProt: Q99683
Assay: Apoptosis Signal-Regulating Kinase Assay: The assay measures the phosphorylation level of a biotinylated peptide substrate by the ASK1 kinase using HTRF detection. This is a competitive, time-resolved fluorescence resonance energy transfer (TR-FRET) immunoassay, based on HTRF® KinEASE™-STK manual from Cisbio. Test compound, 1 μM STK3 peptide substrate, 4 nM of ASK1 kinase were incubated with 10 mM MOP buffer, pH. 7.0 containing 10 mM Mg-acetate, 0.025% NP-40, 1 mM DTT, 0.05% BSA and 1.5% glycerol for 30 minutes then 100 μM ATP was added to start the kinase reaction and incubated for 3 hr. Peptide antibody labeled with 1× Eu3+ Cryptate buffer containing 10 mM EDTA and 125 nM Streptavidin XL665 were added to stop the reaction and phosphorylated peptide substrate was detected using Envision 2103 Multilabeled reader from PerkinElmer. The fluorescence was measured at 615 nm (Cryptate) and 665 nm (XL665) and a ratio of 665 nm/615 nm was calculated for each well. The resulting TR-FRET level (a ratio of 665 nm/615 nm) was proportional to the phosphorylation level. Under these assay conditions, the degree of phosphorylation of peptide substrate was linear with time and concentration for the enzyme.
Measurement: IC50 = 1.4 nM (pChEMBL 8.850000381469727)
Descriptors: MW 568.59, ALogP 4.59, HBA 11, HBD 1, PSA 130.44, QED 0.34
Compound (SMILES): O=C(O)C1CCN(CCOc2ccc3cc2COC/C=C/COCc2cccc(c2)-c2ccnc(n2)N3)CC1
InChIKey: DZDRGJBVJNAMIH-OWOJBTEDSA-N
Target: Tyrosine-protein kinase JAK2 (SINGLE PROTEIN), Homo sapiens
UniProt: O60674
Assay: Inhibition of JAK2 (unknown origin)
Measurement: IC50 < 39 nM (pChEMBL 7.408999919891357)
Descriptors: MW 530.63, ALogP 4.67, HBA 8, HBD 2, PSA 106.04, QED 0.46
Compound (SMILES): O=C(Nc1ccc(C2CCNC2)cc1)Nc1cccc(Cl)c1
InChIKey: FQMAUQKCONRWCT-UHFFFAOYSA-N
Target: Trace amine-associated receptor 1 (SINGLE PROTEIN), Mus musculus
UniProt: Q923Y8
Assay: Radioligand Binding Assay: HEK-293 cells stably expressing mouse TAAR1 were maintained at 37° C. and 5% CO2 in DMEM high glucose medium, containing fetal calf serum (10%, heat inactivated for 30 min at 56° C.), penicillin/streptomycin (1%), and 375 ug/ml geneticin (Gibco). Cells were released from culture flasks using trypsin/EDTA, harvested, washed twice with ice-cold PBS (without Ca2+ and Mg2+), pelleted at 1,000 rpm for 5 min at 4° C., frozen and stored at -80° C. Frozen pellets were suspended in 20 ml HEPES-NaOH (20 mM, pH 7.4) containing 10 mM EDTA and homogenized with a Polytron (PT 6000, Kinematica) at 14,000 rpm for 20 s. The homogenate was centrifuged at 48,000Ã¿g for 30 min at 4° C. Subsequently, the supernatant was removed and discarded, and the pellet resuspended in 20 ml HEPES-NaOH (20 mM, pH 7.4) containing 0.1 mM EDTA using the Polytron (20 s at 14,000 rpm). This procedure was repeated and the final pellet resuspended in HEPES-NaOH containing 0.1 mM EDTA and homogenized using the Polytron. Typically, aliquots of 2 ml membrane portions were stored at -80° C. With each new membrane batch the dissociation constant (Kd) was determined via a saturation curve. The TAAR1 radioligand 3[H]â¿¿(S)-4-[(ethyl-phenyl-amino)-methyl]-4,5-dihydro-oxazol-2-ylamine (described in WO 2008/098857) was used at a concentration equal to the calculated Kd value, that was usually around 2.3 nM, resulting in the binding of approximately 0.2% of the radioligand and a specific binding representing approximately 85% of the total binding. Nonspecific binding was defined as the amount of 3[H]â¿¿(S)-4-[(ethyl-phenyl-amino)-methyl]-4,5-dihydro-oxazol-2-ylamine bound in the presence of 10 uM unlabeled ligand. All compounds were tested at a broad range of concentrations (10 pM to 10 uM) in duplicates. The test compounds (20 ul/well) were transferred into a 96 deep well plate (TreffLab), and 180 ul of HEPES-NaOH (20 mM, pH 7.4) containing MgCl2 (10 mM) and CaCl2 (2 mM) (binding buffer), 300 ul of the radioligand 3[H]â¿¿(S)-4-[(ethyl-phenyl-amino)-methyl]-4,5-dihydro-oxazol-2-ylamine at a concentration of 3.3xKd in nM and 500 ul of the membranes (resuspended at 50 ug protein per ml) added. The 96 deep well plates were incubated for 1 hr at 4° C. Incubations were terminated by rapid filtration through Unifilter-96 plates (Packard Instrument Company) and glass filters GF/C (Perkin Elmer) presoaked for 1 hr in polyethylenimine (0.3%) and washed 3 times with 1 ml of cold binding buffer. After addition of 45 ul of Microscint 40 (PerkinElmer) the Unifilter-96 plate was sealed and after 1 hr the ratioactivity counted using a TopCount Microplate Scintillation Counter (Packard Instrument Company).
Measurement: Ki = 1.5 nM (pChEMBL 8.819999694824219)
Descriptors: MW 315.8, ALogP 4.06, HBA 2, HBD 3, PSA 53.16, QED 0.8
Compound (SMILES): CCCCN(CCCC)C(=O)c1nn(-c2ccc(C(=O)NS(=O)(=O)c3ccc4ccccc4c3)cc2C(=O)N2Cc3ccccc3C[C@@H]2C(=O)O)c(C)c1Cl
InChIKey: JBKWHXIFPNSLTD-PGUFJCEWSA-N
Target: Apoptosis regulator Bcl-2 (SINGLE PROTEIN), Homo sapiens
UniProt: P10415
Assay: Fluorescence Polarization Assay (FPA): The assays were performed in black flat-bottom 384-well plates. The final assay volume was 50 μl prepared from additions of Gst-Bcl-2 (Bcl-2: GENBANK® Accession No. P10415), fluoresceinated 18-mer BIM peptide (NH2-YYANFEDGIRRLEQAIWI-[FAM]) (SEQ ID NO: 1), and test compounds in assay buffer consisting of 20 mM Sodium Phosphate, 1 mM EDTA, 50 mM NaCl, and 0.05% Pluronic Acid. The reaction was incubated at room temperature for 60 minutes and fluorescence polarization of the reaction was detected on the LJL Plate Reader. Inhibition data were calculated from mP values generated by the no protein control reactions for 100% inhibition and vehicle-only reactions for 0% inhibition. The final concentrations of reagents in the assay were 4.9 nM BCL-2, 5 nM fluoresceinated 18-mer BIM peptide and 1% DMSO.
Measurement: IC50 = 1650 nM (pChEMBL 5.78000020980835)
Descriptors: MW 784.34, ALogP 6.8, HBA 8, HBD 2, PSA 158.98, QED 0.13
Compound (SMILES): NCCOc1c(-c2cccc(C(F)(F)F)c2)[nH]c(=O)c2cc(F)ccc12
InChIKey: XIAODRJBQHVZIE-UHFFFAOYSA-N
Target: Poly [ADP-ribose] polymerase 1 (SINGLE PROTEIN), Homo sapiens
UniProt: P09874
Assay: Biochemical Assay: The identification of compounds capable of binding several PARP proteins is carried out through a screening method including the steps of  a) providing a reaction mixture containing:  b) comparing the polarization signal generated in the absence of the test compound with the one generated in the presence of different concentrations of the test compound, and  c) evaluating the ability of the test compound to displace the compound of formula (IP) as defined above indicated from a decreased fluorescence polarization level.The polarization signal can be measured, e.g., by a plate reader such as the Saphire2 (Tecan).
Measurement: Kd = 30 nM (pChEMBL 7.519999980926514)
Descriptors: MW 366.31, ALogP 3.69, HBA 3, HBD 2, PSA 68.11, QED 0.69
Compound (SMILES): COc1cc(Br)c(F)cc1-n1c(=O)ccc2cc(S(=O)(=O)Nc3cc(OCC4CCCC4)ncn3)ccc21
InChIKey: OVEKFYPGPWWFFP-UHFFFAOYSA-N
Target: Sodium channel protein type 9 subunit alpha (SINGLE PROTEIN), Homo sapiens
UniProt: Q15858
Assay: Nav1.7 In Vitro PX Assay: HEK 293 cells stably transfected with human Nav1.7 were recorded in whole cell voltage clamp mode with the PatchXpress automated electrophysiology system (Molecular Devices, LLC, Sunnyvale, Calif.). Compound effects were measured on a partially inactivated state of the sodium channel. Cells were clamped to a holding potential yielding 20 to 50% inactivation. To elicit sodium current, channels were activated by pulsing to -10 mV for 20 msec. This voltage protocol was repeated at a rate of 0.1 Hz throughout the experiment. A single concentration of test compound was applied to cells for a duration of 3 minutes.
Measurement: IC50 = 6643 nM (pChEMBL 5.179999828338623)
Descriptors: MW 603.47, ALogP 5.06, HBA 8, HBD 1, PSA 112.41, QED 0.3
Compound (SMILES): C[C@@H]1NC(c2ccc(-c3ccccc3)cc2)=Nc2nc3ccccn3c2C1=O
InChIKey: ITCGLYYPBCIZBL-HNNXBMFYSA-N
Target: Mitogen-activated protein kinase kinase kinase kinase 4 (SINGLE PROTEIN), Homo sapiens
UniProt: O95819
Assay: Inhibition of recombinant human HGK using Ulight-FLGFTYVAP as substrate after 90 mins by LANCE assay
Measurement: IC50 > 100000 nM (pChEMBL 4)
Descriptors: MW 366.42, ALogP 4.25, HBA 5, HBD 1, PSA 58.76, QED 0.58
Compound (SMILES): CSc1cccc(NC(=O)Nc2ccc(C3CN=C4c5ccccc5NC(=O)N4C3)cc2)c1
InChIKey: XDESGYKFSCSQEU-UHFFFAOYSA-N
Target: Vascular endothelial growth factor receptor 2 (SINGLE PROTEIN), Homo sapiens
UniProt: P35968
Assay: Kinase Assay: Biochemical KDR kinase assays were performed in 96 well microtiter plates that were coated overnight with 75 μg/well of poly-Glu-Tyr (4:1) in 10 mM Phosphate Buffered Saline (PBS), pH 7.4. The coated plates were washed with 2 mLs per well PBS+0.05% Tween-20 (PBS-T), blocked by incubation with PBS containing 1% BSA, then washed with 2 mLs per well PBS-T prior to starting the reaction. Reactions were carried out in 100 μL reaction volumes containing 2.7 μM ATP in kinase buffer (50 mM Hepes buffer pH 7.4, 20 mM MgCl2, 0.1 mM MnCl2 and 0.2 mM Na3VO4). Test compounds were reconstituted in 100% DMSO and added to the reaction to give a final DMSO concentration of 5%. Reactions were initiated by the addition 20 μl per well of kinase buffer containing 200-300 ng purified cytoplasmic domain KDR protein (BPS Bioscience, San Diego, Calif.). Following a 15 minute incubation at 30° C., the reactions were washed 2 mLs per well PBS-T. 100 μl of a monoclonal anti-phosphotyrosine antibody-peroxidase conjugate diluted 1:10,000 in PBS-T was added to the wells for 30 minutes. Following a 2 mLs per well wash with PBS-Tween-20, 100 μl of O-Phenylenediamine Dihydrochloride in phosphate-citrate buffer, containing urea hydrogen peroxide, was added to the wells for 7-10 minutes as a colorimetric substrate for the peroxidase. The reaction was terminated by the addition of 100 μl of 2.5N H2SO4 to each well and read using a microplate ELISA reader set at 492 nm.
Measurement: IC50 = 1800 nM (pChEMBL 5.75)
Descriptors: MW 457.56, ALogP 5.44, HBA 4, HBD 3, PSA 85.83, QED 0.46
Compound (SMILES): CCOC(Cc1ccc(OC(=O)Cc2ccc(NC(=O)OC(C)(C)C)cc2)c(Cc2ccccc2)c1)C(=O)O
InChIKey: OLLBNGURVSULIC-UHFFFAOYSA-N
Target: Peroxisome proliferator-activated receptor gamma (SINGLE PROTEIN), Homo sapiens
UniProt: P37231
Assay: Reporter Gene Assay: Transactivation Assay Expression vectors were prepared by inserting the ligand binding domain cDNA (complementary DNA) of human PPARalpha (amino acid 168-468) and human PPARgamma (amino acid 205-505), 3′ to and in frame with, the yeast GAL4 transcription factor DNA binding domain and the nuclear localization signal from the T-antigen of Polyoma Virus into the mammalian expression vector pSGS (Stratagene). The resulting expression vectors pSGGAL-PPARalpha and pSGGAL-PPARgamma were used in co-transfection experiments together with a modified pGL3 promoter plasmid (Promega) containing five copies of the UAS GAL4 recognition site. 2.5 μg pSGGAL-PPARalpha or pSGGAL-PPARgamma were mixed with 25 μg pGL3p 1×UAS and 22.5 μg pBluescript (Stratagene) in 0.95 mL ice cold PBS containing between 9-12 million U-2 OS (human osteosarcoma) cells. The cell/DNA mixture was incubated on ice for 5 minutes and then divided between two 0.4 cm cuvettes and electroporated at 960 μF, 2
Measurement: EC50 = 5.2 nM (pChEMBL 8.279999732971191)
Descriptors: MW 533.62, ALogP 5.8, HBA 6, HBD 2, PSA 111.16, QED 0.24
Compound (SMILES): CCN(c1cc(C(C)C)cc(C(=O)NCc2c(C)cc(C)[nH]c2=O)c1C)[C@H]1CC[C@H](N(C)C)CC1
InChIKey: CUFXPEFDJBMHAF-RQNOJGIXSA-N
Target: Histone-lysine N-methyltransferase EZH2 (SINGLE PROTEIN), Homo sapiens
UniProt: Q15910
Assay: Inhibition Assay: Test compounds were serially diluted 3-fold in DMSO in a 10 point-curve and 1 uL was spotted into a 384-well microplate in duplicate using a Platemate Plus equipped with 384-channel head (Thermo Scientific). The final top concentration of test compounds in the assay was 10 uM. Positive control (100% inhibition standard) was 1 mM final concentration of SAH and negative control (0% inhibition standard) contained 1 uL of DMSO. Test compounds were then incubated for 30 minutes with 40 uL per well of wild-type EZH2 (final concentration was 4 nM), Y641F EZH2 (final concentration was 0.1 nM) and A677G and A687V EZH2 (for each, final concentration was 2nM) and peptide in 1x assay buffer (20 mM BICINE pH =7.6, 1 mM DTT, 0.002% TWEEN 20 (generic: polysorbate 20), 0.005% BSG). For the wild-type EZH2 and A677G EZH2 assays, biotinylated peptide H3:21-44 with unmethylated K27 was present at a final concentration of 200 nM, while in the A687V EZH2 assay, biotinylated peptide H3.
Measurement: IC50 = 16.9 nM (pChEMBL 7.769999980926514)
Descriptors: MW 480.7, ALogP 5.05, HBA 4, HBD 2, PSA 68.44, QED 0.55
Compound (SMILES): CCc1nnc(NCCSCc2ccc(CN(C)C)o2)c([N+](=O)[O-])c1CC
InChIKey: ORVJJVVWQZKXFQ-UHFFFAOYSA-N
Target: Acetylcholinesterase (SINGLE PROTEIN), Electrophorus electricus
UniProt: O42275
Assay: Inhibition of electric eel AChE using acetylthiocholine as substrate preincubated for 8 mins followed by substrate addition by Ellman's method
Measurement: IC50 = 2540 nM (pChEMBL 5.590000152587891)
Descriptors: MW 393.51, ALogP 3.51, HBA 8, HBD 1, PSA 97.33, QED 0.35
Compound (SMILES): Cc1nc(C)c(-c2cc(C(=O)N3CCC(c4ccc(C#N)cc4)CC3)c(C)cc2C)[nH]1
InChIKey: BXYZXSKFUJTISP-UHFFFAOYSA-N
Target: Fatty acid synthase (SINGLE PROTEIN), Homo sapiens
UniProt: P49327
Assay: Biochemical Assay: The FASN enzyme was isolated from SKBr3 cells. SKBr3 is a human breast cancer cell-line with high levels of FASN expression. It is estimated that FASN comprises about 25% of the cytosolic proteins in this cell line. SKBr3 cells were homogenized in a dounce homogenizer then centrifuged for 15 minutes at 4° C. to remove particulate matter. The supernatant was then analyzed for protein content, diluted to the appropriate concentration, and used to measure FASN activity. The presence of FASN was confirmed by western blot analysis. A similar method for isolation of FASN from SKBr3 cells is described in Teresa, P. et al. (Clin. Cancer Res. 2009; 15(24), 7608-7615). FASN activity of the SKBr3 cell extract was determined by measuring either NADPH oxidation or the amount of thiol-containing coenzyme A (CoA) released during the fatty acid synthase reaction. The dye CPM (7-diethylamino-3-(4'-maleimidyl-phenyl)-4-methylcoumarin) contains a thiol reactive group that increases its fluorescence emission on reaction with the sulfhydryl group of CoA.
Measurement: IC50 = 24 nM (pChEMBL 7.619999885559082)
Descriptors: MW 412.54, ALogP 5.2, HBA 3, HBD 1, PSA 72.78, QED 0.64
Compound (SMILES): CC(=O)N1CCc2c(cccc2OCC(=O)NCC(O)CN2CCc3ccccc3C2)C1
InChIKey: ABHARIAOKQVJFQ-UHFFFAOYSA-N
Target: PRMT5/MEP50 complex (PROTEIN COMPLEX), Homo sapiens
UniProt: Q9BQA1
Assay: Inhibition of recombinant human fetal brain FLAG-tagged PRMT5/full length human testis 6His-tagged MEP50 expressed in baculovirus infected insect Sf9 cells using human histone H4 (1 to 15 residues) as substrate preincubated for 30 mins followed by [3H]-SAM addition
Measurement: IC50 < 100 nM (pChEMBL 7)
Descriptors: MW 437.54, ALogP 1.51, HBA 5, HBD 2, PSA 82.11, QED 0.69
Compound (SMILES): COC(=O)N[C@@H](C)CNc1nccc(-c2c[nH]nc2-c2cc(Cl)cc(NS(C)(=O)=O)c2F)n1
InChIKey: WOXRHSRZAMPSON-JTQLQIEISA-N
Target: Serine/threonine-protein kinase B-raf (SINGLE PROTEIN), Homo sapiens
UniProt: P15056
Assay: Inhibition of B-Raf V600E mutant in human A375 cells harboring B-Raf V600E mutant assessed as reduction in cell proliferation incubated for 2 days by Bright-Glo luminescence assay
Measurement: IC50 = 180 nM (pChEMBL 6.75)
Descriptors: MW 497.94, ALogP 2.85, HBA 8, HBD 4, PSA 150.99, QED 0.37
Compound (SMILES): CC(=O)NC1CCC(Nc2ccc(S(=O)(=O)NC(=O)c3ccc(N4CCN(CC5=C(c6ccc(Cl)cc6)CC(C)(C)CC5)CC4)cc3Oc3cnc4[nH]ccc4c3)cc2[N+](=O)[O-])CC1
InChIKey: LIZHBRQNCSPNPN-UHFFFAOYSA-N
Target: Apoptosis regulator Bcl-2 (SINGLE PROTEIN), Homo sapiens
UniProt: P10415
Assay: Time Resolved-Fluorescence Resonance Energy Transfer (TR-FRET) Assay: Representative compounds were serially diluted in dimethyl sulfoxide (DMSO) starting at 50 uM (2x starting concentration; 10% DMSO) and 10 uL were transferred into a 384-well plate. Then 10 uL of a protein/probe/antibody mix was added to each well at final concentrations listed in TABLE 1. Protein:GST-Bcl-2, Probe: F-Bak Peptide Probe Acetyl-GQVGRQLAIIGDK(6-FAM)INR-amide(SEQ ID NO: 1), Protein(nM): 1, Probe (nM): 100, Antibody: Tb-anit-GST, Antibody (nm): 1.  The samples are then mixed on a shaker for 1 minute and incubated for an additional 3 hours at room temperature. For each assay, the probe/antibody and protein/probe/antibody were included on each assay plate as negative and positive controls, respectively. Fluorescence was measured on the ENVISION plate reader (Perkin Elmer) using a 340/35 nm excitation filter and 520/525 (F-Bak peptide) and 495/510 nm (Tb-labeled anti-Histidine antibody) emission filters.
Measurement: Ki < 0.01 nM (pChEMBL 11)
Descriptors: MW 909.51, ALogP 8.68, HBA 11, HBD 4, PSA 191.9, QED 0.07
Compound (SMILES): C[C@@H](O)Cc1cnc(N)c(-c2ccc(C(=O)NCc3ccccc3)c(F)c2)n1
InChIKey: KEDNYIUWWVFLPM-CYBMUJFWSA-N
Target: Mitogen-activated protein kinase 1 (SINGLE PROTEIN), Homo sapiens
UniProt: P28482
Assay: Kinase Assay (New): Compound potency against activated ERK2 is determined using a kinase assay that measures ERK2-catalyzed phosphorylation of biotinylated ERKtide peptide substrate ([Biotin]-AHA-K-R-E-L-V-E-P-L-T-P-S-G-E-A-P-N-Q-A-L-L-R-[NH2], the peptide sequence derived from EGF receptor: SEQ ID NO:1). The assay is carried out in 50 mM HEPES [pH 7.5], 5 mM MgCl2, 1 mM DTT, 0.01% Tween-20, 0.05% BSA using 0.25 nM ERK2, 200 nM ERKtide peptide and 35 uM ATP (all concentrations are final in the reaction) in a total volume of 10.25 uL. A 16-point, half-log dilution series of compounds at 41x final concentration is used for generating IC50 curves. Compound dilution series are prepared in 100% DMSO. ERK2 is preincubated with compounds for 30 minutes at ambient temperature. Reaction is initiated by addition of a substrate cocktail of ERKtide peptide and ATP and is allowed to proceed for 2-3 hours at ambient temperature. Reaction is terminated by addition of 10 uL of a 2x stop buffer consisting of 100 mM Tris-Cl [pH 7.5], 25 mM EDTA, 0.01% Tween 20, 10 ug/mL of AlphaScreen Protein A Acceptor Beads, 10 ug/mL of Streptavidin Donor Beads (PerkinElmer, Waltham, Mass.), and 1.4 ug/mL phospho-EGF Receptor (Thr669) antibody (Cat #3056, Cell Signaling Technology, Danvers, Mass.). Terminated reactions are read, after overnight incubation in the dark, on an EnVision Multilabel Plate Reader (PerkinElmer, Waltham, Mass.), with excitation and emission wavelengths set to 680 nm and 570 nm, respectively. IC50 values are determined using a four-parameter fit.
Measurement: IC50 = 393 nM (pChEMBL 6.409999847412109)
Descriptors: MW 380.42, ALogP 2.72, HBA 5, HBD 3, PSA 101.13, QED 0.61
Compound (SMILES): O=C(O)c1ccc(CN(CCC2CC2)C(=O)c2ccc(Oc3c(F)cccc3F)cc2)cc1
InChIKey: GUCWMYPGSTXNQO-UHFFFAOYSA-N
Target: Lysophosphatidic acid receptor 5 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9H1C0
Assay: Receptor Assay: Engagement of the LPA5 receptor by its ligand, oleoyl-L-Î±-lysophosphatidic acid (LPA), leads to the release of intracellular stores of calcium into the cytoplasm mediated through a Gq-driven increase in inositol triphosphate (IP3) levels. Gq is a heterotrimeric G protein subunit that activates phospholipase C.The ability of test compounds to prevent LPA-driven intracellular release of stored calcium from RH7777 cells expressing human LPA5 receptors was assayed by stimulating the cells with LPA in the presence of various test compounds to measure the test compounds' antagonism, i.e. activity in vitro. Approximately 10,000 cells in normal culture medium (Minimal Essential Media, 10% Foetal Calf Serum) were dispensed per assay well in a black clear bottom poly-D-lysine coated 384 well plate (Corning). Cells were allowed to settle for thirty minutes at room temperature before being incubated overnight at 37° C., 5% CO2. Sixteen to twenty hours after dispensing, the cells were loaded with a calcium-sensitive fluorescent dye by replacing the culture medium with assay buffer (1x Hanks buffered saline, 25 mM HEPES, 0.1% w/v fatty acid free BSA (bovine serum albumin), pH7.4) containing 1.25 mM probenecid and 1x Calcium 5 Reagent (Molecular Devices). Cells were incubated at 37° C. for one hour to allow for dye uptake.
Measurement: IC50 = 140 nM (pChEMBL 6.849999904632568)
Descriptors: MW 451.47, ALogP 5.9, HBA 3, HBD 1, PSA 66.84, QED 0.44
Compound (SMILES): CSc1ccc(Cl)c(C(=O)Nc2ccc3c(c2)-c2c(c(C(N)=O)nn2-c2ccc4c(c2)OCO4)CC3)c1
InChIKey: VKWCSQBQRXWBLS-UHFFFAOYSA-N
Target: Inhibitor of nuclear factor kappa-B kinase subunit beta (SINGLE PROTEIN), Homo sapiens
UniProt: O14920
Assay: Inhibition of human recombinant C-terminal FLAG-epitope-tagged IKK2 expressed in baculovirus using biotinylated IkappaBalpha peptide as substrate assessed as decrease in [gamma-33P]-ATP incorporation in substrate after 30 mins by scintillation counting method
Measurement: IC50 <= 1000 nM (pChEMBL 6)
Descriptors: MW 533.01, ALogP 5.09, HBA 7, HBD 2, PSA 108.47, QED 0.35
Compound (SMILES): Cc1ccc(-c2cc(C(=O)Nc3ccc(OC(F)(F)F)cc3)cnc2N2CC[C@H](O)C2)cn1
InChIKey: AHFCBJUQSIQAMF-SFHVURJKSA-N
Target: Tyrosine-protein kinase ABL1 (SINGLE PROTEIN), Homo sapiens
UniProt: P00519
Assay: Radio ABL1 (64-515) Assay: For determination of ABL kinase activity, the radiometric filter-binding assay was used. The assay was performed by mixing 10 uL of the compound pre-diluted with 10 uL of ATP (20 uM ATP with 0.1 uCi [γ-33P]-ATP) with the phospho-acceptor peptide poly[Ala6Glu2LysHBr5Tyr1]=polyAEKY) in 20 mM Tris/HCl pH 7.5, 1 mM DTT, 10 mM MgCl2, 0.01 mM Na3VO4, 50 mM NaCl. 10 uL of enzyme (ranging between 5 nM to 20 nM) was added to initiate the reaction. Pre-incubation of enzyme with compounds (when stated) was performed by exposing the enzyme to compounds prior to addition of the substrate mixture (ATP and/or peptide substrate). After 15 mM at room temperature, the reaction was stopped by the addition of 50 uL 125 mM EDTA, and the peptide-bound 33P separated on filter-plates (PVDF or MAIP; Millipore, Volketswil, Switzerland) prepared according to the manufacturer's instructions. Filter-plates were washed 3x with 0.5% H3PO4, followed by addition of 30 uL scintillation cocktail (Microscint, Perkin Elmer) per well and then analysed in a TopCount NXT scintillation counter (Perkin Elmer).
Measurement: IC50 < 3 nM (pChEMBL 8.52299976348877)
Descriptors: MW 458.44, ALogP 4.17, HBA 6, HBD 2, PSA 87.58, QED 0.6
Compound (SMILES): Cc1c(-c2c(F)cc(C(N)=O)c3[nH]c4cc(C(C)(C)O)ccc4c23)cccc1-n1c(=O)[nH]c2c(F)cc(F)cc2c1=O
InChIKey: WIJXOZNFPWXVAP-UHFFFAOYSA-N
Target: Tyrosine-protein kinase BTK (SINGLE PROTEIN), Homo sapiens
UniProt: Q06187
Assay: Btk Enzyme Assay: To V-bottom 384-well plates were added test compounds, human recombinant Btk (1 nM, Invitrogen Corporation), fluoresceinated peptide (1.5 μM), ATP (20 μM), and assay buffer (20 mM HEPES pH 7.4, 10 mM MgCl2, 0.015% Brij 35 surfactant and 4 mM DTT in 1.6% DMSO), with a final volume of 30 μL. After incubating at room temperature for 60 min, the reaction was terminated by adding 45 μL of 35 mM EDTA to each sample. The reaction mixture was analyzed on the Caliper LABCHIP® 3000 (Caliper, Hopkinton, Mass.) by electrophoretic separation of the fluorescent substrate and phosphorylated product.
Measurement: IC50 = 0.77 nM (pChEMBL 9.109999656677246)
Descriptors: MW 572.54, ALogP 5.03, HBA 5, HBD 4, PSA 133.97, QED 0.24
Compound (SMILES): NC(=O)c1nn(-c2ccc(S(N)(=O)=O)cc2)c2c1CCc1ccc(NS(=O)(=O)c3ccc(F)cc3F)cc1-2
InChIKey: OLQSFVZSZDHVHU-UHFFFAOYSA-N
Target: Inhibitor of nuclear factor kappa-B kinase subunit beta (SINGLE PROTEIN), Homo sapiens
UniProt: O14920
Assay: Inhibition of human recombinant C-terminal FLAG-epitope-tagged IKK2 expressed in baculovirus using biotinylated IkappaBalpha peptide as substrate assessed as decrease in [gamma-33P]-ATP incorporation in substrate after 30 mins by scintillation counting method
Measurement: IC50 <= 10000 nM (pChEMBL 5)
Descriptors: MW 559.58, ALogP 2.46, HBA 7, HBD 3, PSA 167.24, QED 0.33
Compound (SMILES): CNS(=O)(=O)c1ccc(N(C)C)c(Nc2cc(Nc3ccc(Cl)cc3)ncn2)c1
InChIKey: ZOUUXVXDAMYMBY-UHFFFAOYSA-N
Target: Serine/threonine-protein kinase TNNI3K (SINGLE PROTEIN), Homo sapiens
UniProt: Q59H18
Assay: Displacement of 5-({[2-({[3-({4-[(5-hydroxy-2-methylphenyl)amino]-2-pyrimidinyl}amino)phenyl]carbonyl}amino)-ethyl]amino}carbonyl)-2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid from His6-MBP-TEV-full length human TNNI3K expressed in Baculovirus expression system after 60 mins by fluorescence polarization assay
Measurement: IC50 = 80 nM (pChEMBL 7.099999904632568)
Descriptors: MW 432.94, ALogP 3.59, HBA 7, HBD 3, PSA 99.25, QED 0.52
Compound (SMILES): CC(C)(COc1ccc(-c2ccc(-c3ncc(C(C)(C)C)[nH]3)cn2)cc1)C(=O)O
InChIKey: FRUILFNBDPSLJZ-UHFFFAOYSA-N
Target: Diacylglycerol O-acyltransferase 1 (SINGLE PROTEIN), Homo sapiens
UniProt: O75907
Assay: DGAT1 Inhibitory Assay: As a buffer to be used in the enzymatic reaction of DGAT1, 100 mM Tris-HCl (pH 7.4), 200 mM Sucrose, 20 mM MgCl2, 0.125% Bovine Serum Albumin (BSA) were used. To the buffer were added Test compound with a predetermined concentration as well as 15 μM dioleoylglycerol, 5 μM [14C]-palmitoyl-CoA, 100 μg protein/nth DGAT1 highly expressed-expresSF+® microsome, 0.75% acetone, and 1% dimethylsulfoxide, and triglyceride (TG) synthetic reaction was carried out at 30 °C. for 20 minutes with a volume of 100 μL. 90 μL of the reaction solution was added to 810 μL of methanol to stop the reaction. The reaction solution was added to Oasie® μElution plate (available from Waters Corporation), and eluted with 150 μL of a mixed solution of acetonitrile: isopropanol (=2:3). To elute was added 150 μL of MicroScinti™-40 (available from PerkinElmer Inc.), and after thoroughly stirring the mixture, a [14C]-TG amount formed by the reaction was quantitated by measuring the same using TopCount™-NXT (available from PerkinElmer Inc.).
Measurement: IC50 = 16 nM (pChEMBL 7.800000190734863)
Descriptors: MW 393.49, ALogP 4.93, HBA 4, HBD 2, PSA 88.1, QED 0.62
Compound (SMILES): Cc1cc(NC(=O)N2CCC(F)(c3ncc(C4=NOC(CO)C4)cc3Cl)CC2)ccc1C(F)(F)F
InChIKey: AEYZPZZOCXTLNU-UHFFFAOYSA-N
Target: Transient receptor potential cation channel subfamily V member 1 (SINGLE PROTEIN), Homo sapiens
UniProt: Q8NER1
Assay: pH-Based Assay: Two days prior to performing this assay, cells are seeded on poly-D-lysine-coated 96-well clear-bottom black plates (commercially available from Becton-Dickinson) at 75,000 cells/well in growth media containing 5 uM PonA (commercially available from Invitrogen) to induce expression of TRPV1. On the day of the assay, the plates are washed with 0.2 mL 1x Hank's Balanced Salt Solution (commercially available from Life Technologies) containing 1.6 mM CaCl2 and 20 mM HEPES, pH 7.4 (wash buffer), and loaded using 0.1 mL of wash buffer containing Fluo-4 (3 uM final concentration, commercially available from Molecular Probes). After 1 h, the cells are washed twice with 0.2 mL wash buffer and resuspended in 0.05 mL 1x Hank's Balanced Salt Solution (commercially available from Life Technologies) containing 3.5 mM CaCl2 and 10 mM Citrate, pH 7.4 (assay buffer). Plates are then transferred to a FLIPR for assay.
Measurement: IC50 < 100 nM (pChEMBL 7)
Descriptors: MW 514.91, ALogP 5.04, HBA 5, HBD 2, PSA 87.05, QED 0.56
Compound (SMILES): CC(=O)N1CCc2nc(N3CCC(Oc4ccc(F)cc4F)CC3)c(N[C@H]3C[C@H](O)C3)nc2C1
InChIKey: HRCVXNPXGOAGEG-QAQDUYKDSA-N
Target: G-protein coupled receptor 6 (SINGLE PROTEIN), Homo sapiens
UniProt: P46095
Assay: GPR6 In Vitro Assay (A.2): This cell based assay measures the ability of compounds to inhibit the constitutive cAMP activity of GPR6 receptor expressed in CHO-K1 cells. CHO cells were stably expressed with GPR6 receptor, whose expression is controlled by a tetracycline inducable element. The cells were cultured in medium containing F12K, 10% FBS, 1% PennStrep, 200 ug/mL Hygromycin. GPR6 receptor expression was induced for 20 hrs with 2 ug/ml doxycycline (sigma D9891) in growth media. After addition of doxycycline cells were plated at a density of 450-750 cells per well in 96-well half-volume black tissue culture plates (Costar) and placed in an incubator (37°, 5% CO2) for 20 hours prior to cAMP assays. Culture media was removed from cells and they were washed with 50 uL/well of Ringer's Buffer (MgCl2 0.047 mg/mL, NaH2PO4 0.18 mg/mL, Na2HPO4 0.1 mg/mL, KCl 0.34 mg/mL, NaHCO3 1.26 mg/mL, D-glucose 1.8 mg/mL, NaCl 7 mg/mL; pH=7.4). Compounds suspended in DMSO were diluted in Ringer's Buffer.
Measurement: IC50 = 0.078 nM (pChEMBL 10.109999656677246)
Descriptors: MW 473.52, ALogP 2.64, HBA 7, HBD 2, PSA 90.82, QED 0.69
Compound (SMILES): CN(c1cccc(-c2ccc(N3CCc4cccc(C(=O)Nc5nc6ccccc6s5)c4C3)nc2C(=O)O)c1C#N)S(=O)(=O)C1CCCCC1
InChIKey: JANVUPFLGQSVCZ-UHFFFAOYSA-N
Target: Bcl-2-like protein 1 (SINGLE PROTEIN), Homo sapiens
UniProt: Q07817
Assay: Time Resolved-Fluorescence Resonance Energy Transfer (TR-FRET) Assay: The measurement of competition of compounds of Formula (I) with F-Bak for a Bcl-2 family protein (Bcl-xL) binding site using a Time Resolved Fluorescence Resonance Energy Transfer (TR-FRET) binding assay: Test compounds were serially diluted in DMSO starting at 50 M (2x starting concentration; 10% DMSO) and 10 Î¼L transferred into a 384-well plate. Then 10 Î¼L of a protein/probe/antibody mix is added to each well at final concentrations listed in Table 1. Protein: GST-Bcl-xL; 1(nM) Probe: F-Bak (GQVGRQLAIIGDK (6-FAM)INR-amide) SEQ ID NO: 1; 100(nM) Antibody: Tb-anti-GST; 1(nM). The samples are then mixed on a shaker for 1 minute then incubated for an additional 2 hours at room temperature. For each assay plate, a probe/antibody and protein/antibody/probe mixture were included as a negative and a positive control, respectively. Fluorescence was measured on the ENVISION plate reader (Perkin Elmer) using a 340/35 nm excitation filter and 520/525 (F-Bak) and 495/510 nm (Tb-labeled anti-his antibody) emission filters. Dissociation constants (Ki) were determined using Wang's equation (Wang, Z.X. An 20 exact mathematical expression for describing competitive binding of two different ligands to protein molecule. FEBS Lett. 1995 360:111-114). The TR-FRET assay can be performed in the presence of varying concentrations of human serum (HS) or fetal bovine serum (FBS).
Measurement: Ki < 0.1 nM (pChEMBL 10)
Descriptors: MW 706.85, ALogP 6.84, HBA 9, HBD 2, PSA 156.59, QED 0.18
Compound (SMILES): Cc1ccc(Nc2nc(NCc3ccnc(F)c3)nc(Nc3ccc(F)cc3)n2)cc1.Cl
InChIKey: SAUXLJVNGGIRQR-UHFFFAOYSA-N
Target: Voltage-gated inwardly rectifying potassium channel KCNH3 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9ULD8
Assay: Inhibition of BEC1 (unknown origin) expressed in dihydrofolate reductase-deficient CHO cells assessed as decrease in KCl-induced intracellular 86Rb ion release after 20 mins
Measurement: IC50 = 240 nM (pChEMBL 6.619999885559082)
Descriptors: MW 419.44, ALogP 4.95, HBA 7, HBD 3, PSA 87.65, QED 0.37
Compound (SMILES): CC(C)c1nc2c(c(Nc3ccc(C(=O)N(C)C)cc3)n1)CCN(c1ncccc1C(F)(F)F)CC2
InChIKey: CFZBRQSRVYVQPH-UHFFFAOYSA-N
Target: Transient receptor potential cation channel subfamily V member 1 (SINGLE PROTEIN), Homo sapiens
UniProt: Q8NER1
Assay: Functional Assay: HEK293 cells were transfected with human TRPV1 cloned in pcDNA3.1zeo(+) using the Effectene non-liposomal lipid based transfection kit (Qiagen) (hTRPV1/HEK293). hTRPV1/HEK293 cells were routinely grown as monolayers under selection in zeocin (200 μg/mL; Invitrogen) in Dulbecco's Modified Eagle Medium (DMEM, Gibco BRL) supplemented with 10% fetal bovine serum, and penicillin/streptomycin (50 units/mL) in 5% CO2 at 37° C. Cells were passaged frequently, every 3-5 days, to avoid overgrowth, depletion of essential medium components, or acidic medium exposure. Cells were passaged using a brief wash in 0.05% trypsin with 1 mM EDTA, followed by dissociation in divalent-free phosphate-buffered saline (Hyclone #SH30028.02). Dissociated cells were seeded onto poly-D-lysine coated black-walled 96-well plates (Biocoat; Becton Dickinson #354640) at about 40,000 cells per well and grown for approximately 1 day in culture medium to near confluency. The assay buffer was composed of 130 mM NaCl, 2 mM KCl, 2 mM MgCl2, 10 mM HEPES, 5 mM glucose, and either 2 mM or 20 μM CaCl2. On the day of the experiment, the culture medium was replaced with 2 mM calcium assay buffer using an automated plate washer (ELx405; Biotek, VT). The cells were incubated in 100 μL/well Fluo-3/AM (2 μM; TEFLabs #0116) with Pluronic F127 (100 μg/mL; Sigma #P2443) for 1 h at rt in the dark. After loading the cells, the dye solution was replaced with 50 μL/well of 20 μM calcium assay buffer using the ELx405 plate washer. Test compounds (50 μL/well) were added to the plate and incubated for 30 min. Intracellular Ca2+ levels were subsequently assayed using a Fluorometric Imaging Plate Reader (FLIPR™ instrument, Molecular Devices, CA) to simultaneously monitor Fluo-3 fluorescence in all wells (λexcitation=488 nm, λemission=540 nm) during challenge with agonist (capsaicin). The IC50 values were determined. Cells were challenged with 150 nM capsaicin and the fluorescence counts were captured following agonist addition at a sampling rate of 0.33 Hz. The contents of the wells were mixed 3 times (40 μL mix volume) immediately after the additions were made. Concentration dependence of block was determined by exposing each well of cells in duplicate rows of a 96 well plate to a serial dilution of test compound. The concentration series usually started at 10 Î¼M with a three-fold serial decrement in concentration. The magnitude of the capsaicin response was determined by measuring the change in fluo3 fluorescence before and 100 seconds after the addition of the agonist.
Measurement: IC50 > 20000 nM (pChEMBL 4.698999881744385)
Descriptors: MW 498.55, ALogP 5.06, HBA 6, HBD 1, PSA 74.25, QED 0.53
Compound (SMILES): CN(C)C(C)(C)/C=C(\C#N)C(=O)N1CCC[C@H]1Cn1nc(-c2ccc(Oc3cccc(F)c3F)cc2F)c2c(N)ncnc21
InChIKey: ANEDRESITAZMQR-ZSFFSCSXSA-N
Target: Tyrosine-protein kinase BTK (SINGLE PROTEIN), Homo sapiens
UniProt: Q06187
Assay: Enzymatic Activity Assay: A Caliper-based kinase assay (Caliper Life Sciences, Hopkinton, Mass.) was used to measure inhibition of Btk kinase activity of a compound of Formula (IA), (I′) or (I). Serial dilutions of test compounds were incubated with human recombinant Btk (2 nM), ATP (40 μM) and a phosphoacceptor peptide substrate FAM-GEEPLYWSFPAKKK-NH2 (1 μM) at room temperature for 3 h. The reaction was then terminated with EDTA, final concentration 20 mM and the phosphorylated reaction product was quantified on a Caliper Desktop Profiler (Caliper LabChip 3000). Percent inhibition was calculated for each compound dilution and the concentration that produced 50% inhibition was calculated.
Measurement: IC50 = 1.5 nM (pChEMBL 8.819999694824219)
Descriptors: MW 604.64, ALogP 5.07, HBA 9, HBD 1, PSA 126.19, QED 0.22
Compound (SMILES): O=C(Cc1cccc(SCc2ccccc2C(=O)O)c1)OCc1ccc(C(F)(F)F)cc1
InChIKey: VQFMGCMKZVDCEF-UHFFFAOYSA-N
Target: Peroxisome proliferator-activated receptor alpha (SINGLE PROTEIN), Homo sapiens
UniProt: Q07869
Assay: Reporter Gene Assay: Transactivation Assay Expression vectors were prepared by inserting the ligand binding domain cDNA (complementary DNA) of human PPARalpha (amino acid 168-468) and human PPARgamma (amino acid 205-505), 3′ to and in frame with, the yeast GAL4 transcription factor DNA binding domain and the nuclear localization signal from the T-antigen of Polyoma Virus into the mammalian expression vector pSGS (Stratagene). The resulting expression vectors pSGGAL-PPARalpha and pSGGAL-PPARgamma were used in co-transfection experiments together with a modified pGL3 promoter plasmid (Promega) containing five copies of the UAS GAL4 recognition site. 2.5 μg pSGGAL-PPARalpha or pSGGAL-PPARgamma were mixed with 25 μg pGL3p 1×UAS and 22.5 μg pBluescript (Stratagene) in 0.95 mL ice cold PBS containing between 9-12 million U-2 OS (human osteosarcoma) cells. The cell/DNA mixture was incubated on ice for 5 minutes and then divided between two 0.4 cm cuvettes and electroporated at 960 μF, 2
Measurement: EC50 = 1300 nM (pChEMBL 5.889999866485596)
Descriptors: MW 460.47, ALogP 5.98, HBA 4, HBD 1, PSA 63.6, QED 0.33
Compound (SMILES): Cc1noc(C)c1Cn1cc(NC(=O)c2cc[nH]c2)cn1
InChIKey: WUDHQHDFUZPJOE-UHFFFAOYSA-N
Target: Taste receptor type 2 member 8 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9NYW2
Assay: Fluorescence Polarization Assays: In another embodiment, Fluorescence Polarization ("FP") based assays may be used to detect and monitor ligand binding. Fluorescence polarization is a versatile laboratory technique for measuring equilibrium binding, nucleic acid hybridization, and enzymatic activity. Fluorescence polarization assays are homogeneous in that they do not require a separation step such as centrifugation, filtration, chromatography, precipitation, or electrophoresis. These assays are done in real time, directly in solution and do not require an immobilized phase. Polarization values can be measured repeatedly and after the addition of reagents since measuring the polarization is rapid and does not destroy the sample. Generally, this technique can be used to measure polarization values of fluorophores from low picomolar to micromolar levels.
Measurement: IC50 = 1350 nM (pChEMBL 5.869999885559082)
Descriptors: MW 285.31, ALogP 2.12, HBA 5, HBD 2, PSA 88.74, QED 0.77
Compound (SMILES): CC(C)NC(=O)CN(C)C(=O)c1ccc2cc(Oc3ccc(C(F)(F)F)cn3)ccc2n1
InChIKey: OZTFXBGSAMIEJV-UHFFFAOYSA-N
Target: Sodium channel protein type 9 subunit alpha (SINGLE PROTEIN), Homo sapiens
UniProt: Q15858
Assay: FRET-Based Membrane Potential Assay: Two days prior to the experiment, frozen HEK293 cells stably expressing recombinant human Nav1.7 were quickly thawed and plated at 25,000 cells/well in growth medium [DMEM (Invitrogen #11965) with 10% HI FBS (Invitrogen #10082), 2 mM glutamine, 100 units/mL penicillin, 0.1 mg/mL streptomycin (PSG, Sigma #G1146), and 500 ug/mL Geneticin (Invitrogen #10131)] in black-walled, clear-bottom 384-well poly-D-lysine-coated assay plates (Greiner Bio-One, Frickenhausen, Germany) and incubated in a humidified 5% CO2 incubator at 37° C. On the day of the assay, medium was removed by aspiration, and cells were washed with assay buffer [HBSS (Invitrogen, Carlsbad, Calif.) containing 20 mM HEPES (Invitrogen, Carlsbad, Calif.)]. After washing, 30 uL assay buffer containing the fluorescent voltage-sensor probe CC2-DMPE (Invitrogen, Carlsbad, Calif.) at 20 uM and 0.01% pluronic F-127 (Invitrogen, Carlsbad, Calif.) was added to the cells. Cells were incubated for 40 minutes at room temperature in the dark. Following the incubation, the cells were washed and 30 uL assay buffer containing 2.5 uM DiSBAC2(3) substrate (Invitrogen, Carlsbad, Calif.) and 0.5 mM VABSC-1 (Invitrogen, Carlsbad, Calif.) was added to the cells. The cells were incubated for 90 minutes at room temperature in the dark. Fluorescence readings were made using a FLIPR TETRA (Molecular Devices, Sunnyvale Calif.) equipped with voltage-sensor probe optics. At the start of each experiment the optimal (EC80) concentration of depolarizing agent (veratridine) was determined by testing a dilution curve of assay buffer containing veratridine (Sigma-Aldrich, St. Louis, Mo.) and 1 mg/mL scorpion venom (SVqq, from Leiurus quinquestriatus; Sigma-Aldrich, St. Louis, Mo.). Compounds were dissolved in dimethyl sulfoxide, and 8-point, 1:3 dilution concentration-response curves were prepared in duplicate in dimethyl sulfoxide, followed by preparation of 0.8 uL/well daughter plates of the dilutions. Test compounds in the daughter plate were diluted to (Ë¿3x) solutions in assay buffer immediately before assaying. Using the FLIPR TETRA, 20 uL of the (3x) compound solutions were first added to the cells, then 20 uL of depolarizing solution (3xEC80 veratridine+SVqq) were added 3 minutes later to activate the channel. Changes in fluorescence were measured at wavelengths of 440-480 nm and 565-625 nm over the course of the experimental run. Membrane depolarization was expressed as a ratio of the maximum F440-480 nm/F565-625 nm reading above average baseline F440-480 nm/F565-625 nm reading. IC50 values were calculated from curve fits of the ratio data using a four-parameter logistic Hill equation (Accelrys Assay Explorer 3.3 Client, Accelrys, San Diego, Calif.) with percent inhibition plotted against compound concentration.
Measurement: IC50 = 3140 nM (pChEMBL 5.5)
Descriptors: MW 446.43, ALogP 4.04, HBA 5, HBD 1, PSA 84.42, QED 0.62
Compound (SMILES): CCc1nn(Cc2ccc(-c3nc4cc(Cl)cnc4[nH]3)cc2F)c(CC)c1CC(=O)O
InChIKey: HDFZIIZSOLWGKM-UHFFFAOYSA-N
Target: Prostaglandin D2 receptor 2 (SINGLE PROTEIN), Homo sapiens
UniProt: Q9Y5Y4
Assay: Radioligand Binding Assay: The CRTH2 receptor binding assay is performed in a scintillation proximity assay (SPA) format with the radioligand [3H]-PGD2 (Perkin Elmer, NET616000MC). CHO-K1-hCRTH2 cell membranes are again homogenized by passing through a single use needle (Terumo, 23G) and diluted in SPA incubation buffer in suitable concentrations (0.5-10 ug protein/well). The SPA assay is set up in 96 well microtiter plates (Perkin Elmer, CatNo. 6005040) in SPA incubation buffer with a final volume of 200 ul per well and final concentration of 50 mM Tris-HCl, 10 mM MgCl2, 150 mM NaCl, 1 mM EDTA pH 7.4, 0.1% bovine serum albumin). The SPA assay mixture contains 60 ul of the membrane suspension, 80 ul of Wheat Germ Agglutinin coated PVT beads (GE Healthcare, RPNQ-0001, 0.3 mg/well), 40 ul of [3H]-PGD2 diluted in SPA buffer to a final concentration of 1 nM (50 000 dpm) and 20 ul of the test compound (dissolved in dimethylsulfoxid).
Measurement: Ki = 5.1 nM (pChEMBL 8.289999961853027)
Descriptors: MW 441.89, ALogP 4.41, HBA 5, HBD 2, PSA 96.69, QED 0.44