SensoLyte® 520 Cathepsin G Assay Kit Fluorimetric - 1 kit
- Cat.Number : AS-72185
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Cathepsins are a class of globular lysosomal proteases playing a vital role in mammalian cellular turnover. They degrade polypeptides and are distinguished by their substrate specificities. Cathepsin G is the serine protease released by neutrophils upon their activation. Cathepsin G is currently being explored as a target for anti-inflammatory and anti-infective drugs.
The SensoLyte® 520 Cathepsin G Activity Assay Kit uses a HiLyte™ Fluor 488/QXL™ 520 FRET peptide substrate for the measurement of enzyme activity. In the intact FRET peptide, the fluorescence of HiLyte™ Fluor 488 is quenched by QXL™ 520. Upon cleavage of the FRET peptide by the active enzyme, the increase of fluorescence can be continuously monitored at excitation/emission = 490/520 nm. With superior fluorescence quantum yield and longer emission wavelength, the HiLyte™ Fluor 488/QXL™ 520 based FRET peptide has less interference from the autofluorescence of test compounds and cellular components and provides better assay sensitivity. The fluorescent signal from HiLyte Fluor™ 488 is stable at low pH, which is the optimal pH for cathepsin activity. The kit can be used to detect the activity of Cathepsin G enzyme in biological samples and purified enzyme preparations.
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Citations
Serine protease inhibitor A3 in atherosclerosis and aneurysm disease.
Int J Mol Med. . 2012 May 09 ; 30(2) 288 | DOI : 10.3892/ijmm.2012.994
- D. Wågsäter
Lung inflammation promotes metastasis through neutrophil protease-mediated degradation of Tsp-1
Proc Natl Acad Sci U S A . 2015 Dec 29 ; 112(52) 16000 | DOI : 10.1073/pnas.1507294112.
- T. El Rayes
- et al