Bioassay Systems QuantiFluo™ Chymotrypsin Inhibitor Assay Kit, For evaluation of drugs and screening of potential inhibitors to chymotrypsin proteases.

Supplier:  Bioassay Systems DCTI100

CHYMOTRYPSIN (EC 3.4.21.1) is a digestive, serine protease that hydrolyzes dietary proteins in many eukaryotic and prokaryotic organisms. Chymotrypsin predominantly cleaves peptide chains at the carboxyl side of the aromatic phenylalanine, tryptophan, and tyrosine amino acids. BioAssay System’s QuantiFluo™ Chymotrypsin Inhibitor Assay Kit uses a fluorescein isothiocyanate (FITC)-labeled synthetic substrate. The fluorescein label is highly quenched. Upon digestion by chymotrypsin present in the sample, the substrate is cleaved into smaller peptides, which abolishes the quenching of the fluorescence label. The fluorescence or fluorescence polarization (FP) of the FITC-labeled fragments is measured at λex/em = 485/530 nm. Inhibition is determined by the decrease in fluorescence.

Catalog No. 50-001-44362