lovingscience/chembl-v37-raw-activities huggingface dataset:
Compound (SMILES): CS(=O)(=O)c1cc(OCC(F)(F)F)cc(-c2ccc(C[C@@H](C#N)NC(=O)[C@H]3N[C@@H]4CC[C@H]3C4)c(F)c2)c1
InChIKey: NOGUIGWOYFVCHA-FAODYONGSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 5500 nM (pChEMBL 5.260000228881836)
Descriptors: MW 539.55, ALogP 3.53, HBA 6, HBD 2, PSA 108.29, QED 0.5
Compound (SMILES): CN(C)CCN1C(=O)Cc2ccc(-c3ccc(C[C@@H](C#N)NC(=O)[C@H]4N[C@@H]5CC[C@H]4C5)c(F)c3)cc21
InChIKey: AWNMFDZAZNAOSJ-GIRPNKPCSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 1200 nM (pChEMBL 5.920000076293945)
Descriptors: MW 489.6, ALogP 2.63, HBA 5, HBD 2, PSA 88.47, QED 0.6
Compound (SMILES): N#C[C@H](Cc1ccc(C2=CCN3CCOCC3C2)cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: CMFKDMUAZSMZET-SIKKGAFYSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 1900 nM (pChEMBL 5.71999979019165)
Descriptors: MW 424.52, ALogP 2, HBA 5, HBD 2, PSA 77.39, QED 0.76
Compound (SMILES): N#C[C@H](Cc1ccc(C2=CC3COCCN3CC2)cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: KYHQETISGYHVCF-SIKKGAFYSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 1800 nM (pChEMBL 5.75)
Descriptors: MW 424.52, ALogP 2, HBA 5, HBD 2, PSA 77.39, QED 0.76
Compound (SMILES): N#C[C@H](Cc1ccc([C@@H]2CCN3CCOC[C@H]3C2)cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: UVMGBTLVJPDNFH-IXRJDROYSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 3600 nM (pChEMBL 5.440000057220459)
Descriptors: MW 426.54, ALogP 2.1, HBA 5, HBD 2, PSA 77.39, QED 0.75
Compound (SMILES): N#C[C@H](Cc1ccc(-n2cc(C(F)(F)F)cn2)cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: KLUIZDATHDMRJM-OGIUKLMXSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 8700 nM (pChEMBL 5.059999942779541)
Descriptors: MW 421.4, ALogP 2.72, HBA 5, HBD 2, PSA 82.74, QED 0.73
Compound (SMILES): N#C[C@H](Cc1ccc(-c2ccc(C(=O)N3CCOCC3)o2)cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: QLIQIELZFMSNMZ-YWNPBTLJSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 2200 nM (pChEMBL 5.659999847412109)
Descriptors: MW 466.51, ALogP 2.25, HBA 6, HBD 2, PSA 107.6, QED 0.68
Compound (SMILES): N#CC(Cc1cc2c(=O)[nH]c3cc(F)ccc3c2cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: DTAUFOVRLHTZMV-KCTYFBKRSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 2700 nM (pChEMBL 5.570000171661377)
Descriptors: MW 422.44, ALogP 2.65, HBA 4, HBD 3, PSA 97.78, QED 0.56
Compound (SMILES): N#CC(Cc1cc2c(=O)[nH]c3ccccc3c2cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: JXZFVUAWOOAFIK-ZVRQAHGESA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 2200 nM (pChEMBL 5.659999847412109)
Descriptors: MW 404.45, ALogP 2.51, HBA 4, HBD 3, PSA 97.78, QED 0.58
Compound (SMILES): N#CC(Cc1cc2c(=O)[nH]c3ccc(F)cc3c2cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: MGNYOUZFQWDYNX-KCTYFBKRSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 4700 nM (pChEMBL 5.329999923706055)
Descriptors: MW 422.44, ALogP 2.65, HBA 4, HBD 3, PSA 97.78, QED 0.56
Compound (SMILES): N#CC(Cc1ccc2c(c1)c(=O)[nH]c1c(F)c(F)c(F)cc12)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: QFZGHZXZHJQDBG-YXRZMQEQSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 > 30000 nM (pChEMBL 4.5229997634887695)
Descriptors: MW 440.43, ALogP 2.79, HBA 4, HBD 3, PSA 97.78, QED 0.43
Compound (SMILES): N#CC(Cc1ccc2c(c1)c(=O)[nH]c1cc(Cl)ccc12)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: SRFGHILZTKEQQR-KYZGXIHASA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 12400 nM (pChEMBL 4.909999847412109)
Descriptors: MW 420.9, ALogP 3.03, HBA 4, HBD 3, PSA 97.78, QED 0.56
Compound (SMILES): N#Cc1ccc2[nH]c(=O)c3cc(CC(C#N)NC(=O)[C@H]4N[C@@H]5CC[C@H]4C5)ccc3c2c1
InChIKey: YPEVAINANCAWJY-GDLIHOIBSA-N
Target: Dipeptidyl peptidase 1 (SINGLE PROTEIN), Homo sapiens
UniProt: P53634
Assay: Inhibition Assay: The recombinant human DPPI was diluted in TAGZyme buffer to 1 U/ml (38.1 ug/ml, respectively), and then activated by mixing in a 1:2 ratio with a Cysteamine aqueous solution (2 mM) and incubating for 5 min at room temperature.Five uL test compound (final concentration 0.1 nM to 100 uM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of DPPI in MES buffer (final concentration 0.0125 ng/uL) and incubated for 10 min. Then, 5 uL of substrate in MES buffer (final concentration 50 uM) were added. The microtiter plates were then incubated at room temperature for 30 min. Then, the reaction was stopped by adding 10 uL of Gly-Phe-DMK in MES-buffer (final concentration 1 uM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm) or an Envision Fluorescence Reader (Ex 355 nm, Em 460 nm).
Measurement: IC50 = 3.2 nM (pChEMBL 8.489999771118164)
Descriptors: MW 411.47, ALogP 2.24, HBA 5, HBD 3, PSA 121.57, QED 0.57
Compound (SMILES): N#CC(Cc1ccc2c(c1)c(=O)[nH]c1c(F)c(F)ccc12)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: LEQYVTSCFCOAQM-IIPZRCANSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 23100 nM (pChEMBL 4.639999866485596)
Descriptors: MW 422.44, ALogP 2.65, HBA 4, HBD 3, PSA 97.78, QED 0.56
Compound (SMILES): N#C[C@H](Cc1ccc2c(c1)c(=O)[nH]c1cc(C(F)(F)F)ccc12)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: HCFZSMVUHBOWST-QRHKASNESA-N
Target: Dipeptidyl peptidase 1 (SINGLE PROTEIN), Homo sapiens
UniProt: P53634
Assay: Inhibition Assay: The recombinant human DPPI was diluted in TAGZyme buffer to 1 U/ml (38.1 ug/ml, respectively), and then activated by mixing in a 1:2 ratio with a Cysteamine aqueous solution (2 mM) and incubating for 5 min at room temperature.Five uL test compound (final concentration 0.1 nM to 100 uM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of DPPI in MES buffer (final concentration 0.0125 ng/uL) and incubated for 10 min. Then, 5 uL of substrate in MES buffer (final concentration 50 uM) were added. The microtiter plates were then incubated at room temperature for 30 min. Then, the reaction was stopped by adding 10 uL of Gly-Phe-DMK in MES-buffer (final concentration 1 uM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm) or an Envision Fluorescence Reader (Ex 355 nm, Em 460 nm).
Measurement: IC50 = 4.5 nM (pChEMBL 8.350000381469727)
Descriptors: MW 454.45, ALogP 3.39, HBA 4, HBD 3, PSA 97.78, QED 0.53
Compound (SMILES): Cn1c(=O)c2cc(CC(C#N)NC(=O)[C@H]3N[C@@H]4CC[C@H]3C4)ccc2c2ccc(C#N)cc21
InChIKey: JRJZXYNCCWJCKO-XDGMMDTHSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 22200 nM (pChEMBL 4.650000095367432)
Descriptors: MW 425.49, ALogP 2.25, HBA 6, HBD 2, PSA 110.71, QED 0.62
Compound (SMILES): N#CC(Cc1ccc2c(cnc3cc(F)ccc32)c1)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: QJNLKABXJHEPTA-IHQHAJGLSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 > 30000 nM (pChEMBL 4.5229997634887695)
Descriptors: MW 388.45, ALogP 3.22, HBA 4, HBD 2, PSA 77.81, QED 0.67
Compound (SMILES): CN1CCC(Oc2ccc(C[C@@H](C#N)NC(=O)[C@H]3N[C@@H]4CC[C@H]3C4)c(F)c2)CC1
InChIKey: HYUGWMVHDPXQBJ-DLRJPAPCSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 4500 nM (pChEMBL 5.349999904632568)
Descriptors: MW 400.5, ALogP 1.99, HBA 5, HBD 2, PSA 77.39, QED 0.76
Compound (SMILES): N#C[C@H](Cc1cc2c(=O)[nH]c3ccccc3c2cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: JXZFVUAWOOAFIK-CUKHNGKTSA-N
Target: Dipeptidyl peptidase 1 (SINGLE PROTEIN), Homo sapiens
UniProt: P53634
Assay: Inhibition Assay: The recombinant human DPPI was diluted in TAGZyme buffer to 1 U/ml (38.1 ug/ml, respectively), and then activated by mixing in a 1:2 ratio with a Cysteamine aqueous solution (2 mM) and incubating for 5 min at room temperature.Five uL test compound (final concentration 0.1 nM to 100 uM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of DPPI in MES buffer (final concentration 0.0125 ng/uL) and incubated for 10 min. Then, 5 uL of substrate in MES buffer (final concentration 50 uM) were added. The microtiter plates were then incubated at room temperature for 30 min. Then, the reaction was stopped by adding 10 uL of Gly-Phe-DMK in MES-buffer (final concentration 1 uM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm) or an Envision Fluorescence Reader (Ex 355 nm, Em 460 nm).
Measurement: IC50 = 0.8 nM (pChEMBL 9.100000381469727)
Descriptors: MW 404.45, ALogP 2.51, HBA 4, HBD 3, PSA 97.78, QED 0.58
Compound (SMILES): N#C[C@H](Cc1cc2c(=O)[nH]c3cc(F)ccc3c2cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: DTAUFOVRLHTZMV-SGVRJHEMSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 900 nM (pChEMBL 6.050000190734863)
Descriptors: MW 422.44, ALogP 2.65, HBA 4, HBD 3, PSA 97.78, QED 0.56
Compound (SMILES): N#C[C@H](Cc1cc2c(=O)[nH]c3c(F)c(F)ccc3c2cc1F)NC(=O)[C@H]1N[C@@H]2CC[C@H]1C2
InChIKey: MXFQVQKDFVESOP-IUNRRVLSSA-N
Target: Cathepsin K (SINGLE PROTEIN), Homo sapiens
UniProt: P43235
Assay: Inhibition Assay of Human Cathepsin K: Materials: Microtiterplates (Optiplate-384 F were purchased from PerkinElmer (Prod. No. 6007270). The substrate Z-Gly-Pro-Arg-AMC was from Biomol (Prod.-No. P-142). L-Cysteine (Prod. No. 168149) was from Sigma. Sodium acetate was from Merck (Prod.-No. 6268.0250), EDTA was from Fluka (Prod.-No. 03680). The inhibitor E-64 was purchased from Sigma (Prod.-No. E3132). The recombinant human Cathepsin K proenzyme was purchased from Biomol (Prod. No. SE-367). All other materials were of highest grade commercially available. The following buffers were used: Activation buffer: 32.5 mM sodium acetate, adjusted to pH 3.5 with HCl; Assay buffer: 150 mM sodium acetate, 4 mM EDTA, 20 mM L-Cysteine, adjusted to pH 5.5 with HCl, Assay conditions: To activate the proenzyme, 5 μl procathepsin K were mixed with 1 ul activation buffer, and incubated at room temperature for 30 min. 5 μL test compound (final concentration 0.1 nM to 100 μM) in aqua bidest (containing 4% DMSO, final DMSO concentration 1%) were mixed with 10 uL of Cathepsin K in assay buffer (final concentration 2 ng/μL) and incubated for 10 min. Then 5 μL of substrate in assay buffer (final concentration 12.5 μM) were added. The plates were then incubated at room temperature for 60 min. Then, the reaction was stopped by adding 10 μL of E64 in assay buffer (final concentration 1 μM). The fluorescence in the wells was determined using a Molecular Devices SpectraMax M5 Fluorescence Reader (Ex 360 nm, Em 460 nm). Each assay microtiter plate contains wells with vehicle controls (1% DMSO in bidest) as reference for non-inhibited enzyme activity (100% Ctl; high values) and wells with inhibitor (E64 in bidest+1% DMSO, final concentration 1 μM) as controls for background fluorescence (0% Ctl; low values). The analysis of the data was performed by calculating the percentage of fluorescence in the presence of test compound in comparison to the fluorescence of the vehicle control after subtracting the background fluorescence: (RFU(sample)−RFU(background))*100/(RFU(control)−RFU(background)).
Measurement: IC50 = 800 nM (pChEMBL 6.099999904632568)
Descriptors: MW 440.43, ALogP 2.79, HBA 4, HBD 3, PSA 97.78, QED 0.54