Caspase 8 Colorimetric Activity Assay Kit 25, IETD

Activation of ICE-family proteases/caspases initiates apoptosis in mammalian cells. Chemicon′s Caspase-8 Colorimetric Activity Assay Kits provide a simple and convenient means for assaying the activity of caspases that recognize the sequence IETD. The assay is based on spectophotometric detection of the chromophore p-nitroaniline (pNA) after cleavage from the labeled substrate IETD-pNA. The free pNA can be quantified using a spectrophotometer or a microtiter plate reader at 405 nm. Comparison of the absorbance of pNA from an apoptotic sample with an uninduced control allows determination of the fold increase in caspase-8 activity.

Research Category
Apoptosis & Cancer

5X Cell Lysis Buffer (Part No. 90065): 5 mL

5X Assay Buffer (Part No. 90066): 10 mL

Caspase-8 Substrate (Ac-IETD-pNA) (Part No. 90081): 250 μL of 2.5 mg/mL solution

Caspase-8 Inhibitor (Ac-IETD-CHO) (Part No. 90086): 50 μL of 100 mM (0.05 mg/mL) in DMSO

pNA Standard (Part No. 90085): 250 μL of 10 mM in DMSO

Store kit materials at -20°C up to their expiration date.

Special Precautions:

· After thawing reagents, use immediately or aliquot and freeze at -20oC for longer storage. Avoid repeated freeze/thaw cycles.

· The Caspase-8 substrate and pNA standard are especially light sensitive. Maintain these reagents in amber or covered containers.

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