## Endpoint to Predict
- Endpoint scope: assay
- Measurement type: IC50
- Label type: continuous
- Binary semantics: pchembl
- Assay description: ELISA Assay: ROCK Substrate Coated Plate (Part No 241601): One strip well 96-well plate pre-coated with recombinant MYPT1.Buffer: 25 mM Tris, pH 7.5, 10 mM MgCl2, 5 mM Glycerol-2-Phosphate, 0.1 mM Na3VO4; 1% DMSO; 2.5 mM DTT; (Enzyme: ROCK active-II) (Cell Biolabs, Catalog #STA-406, Part No. 241505) 0.1 ng/μl.ATP Solution (Part No. 241604): 100 mM ATP. Final concentration of ATP in reaction mixture: 250 μM.Anti-phospho-MYPT1 (Thr696) (Part No. 241603).Secondary Antibody, HRP Conjugate (Part No. 231003).Biotinylated substrate, diluted to 0.25 μM with buffer described above (without ATP).Steps:1. Purified kinase or cell lysate sample can be used directly in the kinase assay or further diluted with 1× Kinase Buffer. Each sample should be assayed in duplicate.2. Add 90 μL of the diluted active ROCK-II positive control or unknown ROCK samples to the wells of the substrate plate.3. Initiate the kinase reaction by adding 10 μL of the 10× Kinase Reaction Buffer containing DTT and ATP. Mix well.4. Cover with a plate cover and incubate the wells at 30° C. for 30-60 minutes with gentle agitation.5. Stop kinase reaction by flicking out the content or by adding 50 μL of 0.5M EDTA, pH 8, to each well.6. Remove the plate cover and empty wells. Wash microwell strips 3 times with 250 μL 1× Wash Buffer per well with thorough aspiration between each wash. After the last wash, empty wells and tap microwell strips on absorbent pad or paper towel to remove excess 1× Wash Buffer.7. Add 100 μL of the diluted anti-phospho-MYPT1 (Thr696) antibody to each well.8. Cover with the plate cover and incubate at room temperature for 1 hour on an orbital shaker.9. Remove the plate cover and empty wells. Wash the strip wells 3 times according to step 6 above.10. Add 100 μL of the diluted HRP-conjugated secondary antibody to each well.11. Cover with the plate cover and incubate at room temperature for 1 hour on an orbital shaker.12. Remove the plate cover and empty wells. Wash microwell strips 3 times according to step 6 above. Proceed immediately to the next step.13. Warm Substrate Solution to room temperature. Add 100 μL of Substrate Solution to each well, including the blank wells. Incubate at room temperature for 5-20 minutes on an orbital shaker.14. Stop the enzyme reaction by adding 100 μL of Stop Solution into each well, including the blank wells. Results should be read immediately (color will fade over time).15. Read absorbance of each microwell on a spectrophotometer using 450 nm as the primary wave length.
- Assay organism: Homo sapiens
- Target name: Rho-associated protein kinase 2
- Target type: SINGLE PROTEIN
- Target organism: Homo sapiens

## Reference Molecule A
- Canonical SMILES: CN(C)CCN(Cc1cccc(F)c1)C(=O)Nc1ccc2cnccc2c1
- Properties:
- ChEMBL ID: CHEMBL5940554
- Molecular weight: 366.44
- Heavy atoms: 27
- Hydrogen bond donors: 1
- Hydrogen bond acceptors: 3
- TPSA: 48.47
- LogP: 3.97
- Rotatable bonds: 6
- Ring count: 3
- Aromatic rings: 3
- Formal charge: 0
- Fraction Csp3: 0.24
- QED: 0.72

## Known Reference Result on This Endpoint
- Molecule A clean result: median pChEMBL = 6.26
- This result is provided as context for predicting Molecule B on the same endpoint.

## Reference Molecule A Other ChEMBL Evidence
- type IC50; relation =; value 550; units nM; pChEMBL 6.26; comment 918926

## Query Molecule B
- Canonical SMILES: CN(C)CCN(Cc1ccc(Cl)cc1)C(=O)Nc1ccc2cnccc2c1
- Properties:
- ChEMBL ID: CHEMBL5779548
- Molecular weight: 382.9
- Heavy atoms: 27
- Hydrogen bond donors: 1
- Hydrogen bond acceptors: 3
- TPSA: 48.47
- LogP: 4.48
- Rotatable bonds: 6
- Ring count: 3
- Aromatic rings: 3
- Formal charge: 0
- Fraction Csp3: 0.24
- QED: 0.68

## Molecule Similarity
- Weighted Tanimoto: 0.76

Answer: 7.26