Protease inhibitor cocktail

Protease inhibitor cocktail

Product Uses Include

  • Inhibition of a wide range of proteases.
  • Popular Activation Assay Component

Protease Inhibitor Cocktail is supplied as a white lyophilized powder. The cocktail contains the following protease inhibitors, Pepstatin A, Leupeptin, Benzamidine, Na-p-tosyl-L-arginine methyl ester (TAME). At 1X final working concentration the inhibitors are at 1 µM, 1.5 µM, 1 mM and 0.4 mM respectively.

Mode of Action
pepstatin A Reversibly inhibits some aspartic proteases
Leupeptin Reversibly inhibits trypsin like serine and some cysteine proteases
Benzamidine Inhibits serine proteases
TAME Inhibits arginine proteases, a thrombin and trypsin inhibitor

Storage and Reconstitution
Lyophilized Protease Inhibitor Cocktail is stable at 4°C desiccated (<10% humidity) for 1 year.
Each tube of Protease Inhibitor Cocktail should be resuspended in 1ml of DMSO (dimethyl sulfoxide) to give a 100X strength stock. The reconstituted stock can be stored at 4°C for up to 6 months or at -70°C for up to 1 year.

Related Products
This protease inhibitor cocktail is used in the following Cytoskeleton Activation Assays:

  • Ras activation assay Biochem kit (Cat. # BK008)
  • Cdc42 activation assay Biochem kit (Cat. # BK034)
  • Rac activation assay Biochem kit (Cat. # BK035)
  • RhoA activation assay Biochem kit (Cat. # BK036)
  • G-actin : F-actin in vivo assay Biochem kit (Cat. # BK037)
  • Microtubule : tubulin in vivo assay Biochem kit (Cat. # BK038)
  • RhoA G-LISA™ Activation Assay Kit (luminescence) (Cat. # BK121)
  • RhoA G-LISA™ Activation Assay Kit (colorimetric) (Cat. # BK124)
  • Rac1,2,3 G-LISA™ Activation Assay Kit (colorimetric) (Cat. # BK125)
  • Rac1 G-LISA™ Activation Assay Kit (luminescence) (Cat. # BK126)
  • Cdc42 G-LISA™ Activation Assay (Cat. # BK127)
  • Rac1 G-LISA™ Activation Assay (Colorimetric Based) (Cat. # BK128)
  • RalA G-LISA™ Activation Assay (Colorimetric Based) (Cat. # BK129)

For product Datasheets and MSDSs please click on the PDF links below.   For additional information, click on the FAQs tab above or contact our Technical Support department at

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