Some Products May Appear Restricted
To ensure a smooth and speedy checkout, please log in to your account. Some items may show as restricted simply because you're not logged in.
If you do not have an account, you can register using our registration webform (https://www.avantorsciences.com/us/en/login/register)
If you're still seeing restrictions after logging in, certain products—like chemicals or medical devices—require additional account verification steps to be able to place an order. Some items may additionally require a specific license or customer documentation; additional documentation will be requested for these items prior to shipment.
- Size:100 Assays
- Cat. No.:103010-504
- Storage temperature:– 78 °C
- Includes:The assays can be performed in a convenient 96-well microplate format, kit includes essential components and detailed protocol and references
- Supplier no.:AS-72149
The calpains are a family of intracellular Ca2+ dependent cysteine proteases
The SensoLyte® 520 Calpain Activity Assay Kit is optimized for detecting calpain activity. This kit contains a novel internally quenched 5-FAM/QXL® 520 FRET substrate. Calpain protease cleaves the FRET substrate into two separate fragments resulting in the release of 5-FAM fluorescence which can be monitored at excitation/emission= 490/520 nm. Increase in fluorescence is proportional to the calpain activity. The assay can detect both calpain 1 (μm) and 2 (m) activities and is ideal for kinetic study of these enzymes. The long wavelength fluorescence of 5-FAM is less interfered by the autofluorescence of components in biological samples and test compounds. The assays are performed in a convenient 96-well microplate format.
The best-characterized calpains are isoforms 1 (μm) and 2 (m). They respond to Ca2+ signals by cleaving many specific proteins, thereby irreversibly modifying their function(s). Calpains are implicated in a variety of Ca2+ regulated cellular processes as well as various pathological phenomena such as ischemic injury, muscular dystrophy, diabetes, cataract, atherosclerosis, Alzheimer's disease, and cancer. Calpains represent potential therapeutic targets for drug discovery.