Red Fluorescent SR101-Phe-CMK Serine Protease Assay Kit

Quantify intracellular active chymotrypsin-like serine protease activity in vitro. The CMK group alkylates the active site histidine residue. Analyze your samples using a flow cytometer, fluorescence microscope, or fluorescence plate reader.

Product Specifications

Assay Principle

1. Prepare samples and controls, 2. Dilute cellular wash buffer 1:10 with diH2O, 3. Reconstitute FLISP with 50 µL DMSO, 4. Dilute FLISP 1:5 by adding 200 µL PBS, 5. Add 10 µL FLISP to each sample (~500 µL aliquot of cultured cells), 6. Incubate ~ 1 hour., 7. Remove media and wash cells: add wash buffer and spin cells (twice); or add fresh media and incubate 1 hour, 8. If desired, label with additional stains, such as Hoechst, PI, or an antibody, 9. If desired, fix or embed cells, 10. Analyze with a fluorescence microscope, fluorescence plate reader, or flow cytometer. FAM-FLISP excites at 590 nm and emits at 610 nm.