Abcam's Enterokinase Activity Assay Kit (Fluorometric) utilizes a peptide substrate containing the Enterokinase recognition sequence along with a fluorescent label ‘AFC’. Enterokinase catalyzes the cleavage of this substrate and releases the AFC molecule, which can be easily quantified by measuring its fluorescence at Ex/Em = 380/500 nm. This assay kit is simple and rapid and can detect Enterokinase activity as low as 1 µU.
This product is manufactured by BioVision, an Abcam company and was previously called K758 Enteropeptidase/Enterokinase Activity Fluorometric Assay Kit. K758-100 is the same size as the 100 test size of ab170964.
Enterokinase (Enteropeptidase, EC 3.4.21.9) is a serine protease involved in activation of trypsinogen to trypsin, which in turn results in the activation of various digestive enzymes. It recognizes a highly specific amino acid sequence ‘DDDDK’ and cleaves after the lysine residue. High specific activity of Enterokinase has been utilized in cleaving a variety of native or fusion protein tags containing the above recognition motif.
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