General description
A fluorogenic FRET peptide with a substrate sequence that is optimized for calpain-1 and -2 based on 106 known cleavage sites. It is cleaved by mammalian calpains with a much better efficacy (kcat/Kmx10-2 (M-1s-1) = 69.8, 38.5, 20.0, 6.81, 3.58, 0.05, and <0.05 for calpain-2, trypsin, papain, calpain-B, calpain-A, chymotrypsin, and cathepsin-B, respectively) and kinetically superior to other commonly used calpain substrates, such as LY-AMC and α-spectrin cleavage site-based substrate. Has been used successfully in monitoring calpain activity in whole Drosophila S2 cells (cellular incorporation achieved with a lipofection reagent) and in COS-7 cell lysate.
A fluorogenic FRET peptide with a substrate sequence that is optimized for calpain-1 and -2 based on 106 known cleavage sites. It is cleaved by mammalian calpains with higher efficiency (kcat/Kmx10-2 (M-1s-1) = 69.8, 38.5, 20.0, 6.81, 3.58, 0.05, and <0.05 for calpain-2, trypsin, papain, calpain-B, calpain-A, chymotrypsin, and cathepsin-B, respectively). It is kinetically superior to other commonly used calpain substrates, such as LY-AMC (Cat. No. 208731) and α-spectrin cleavage site-based substrate (Cat. No. 208748). Has been used successfully in monitoring calpain activity in intact Drosophila S2 cells (cellular incorporation achieved with a lipofection reagent) and in COS-7 cell lysate.
Biochem/physiol Actions
Cell permeable: no
Primary Target
Substrate sequence that is optimized for calpain-1 and -2
Product does not compete with ATP.
Reversible: no
kcat/Kmx10-2 (M-1s-1) = 69.8, 38.5, 20.0, 6.81, 3.58, 0.05, and <0.05 for calpain-2, trypsin, papain, calpain-B, calpain-A, chymotrypsin, and cathepsin-B, respectively
Packaging
Packaged under inert gas
Warning
Toxicity: Irritant (B)
Sequence
DABCYL-Thr-Pro-Leu-Lys~Ser-Pro-Pro-Pro-Ser-Pro-Arg-EDANS
Physical form
Supplied as a trifluoroacetate salt.
Reconstitution
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Other Notes
Tompa, P., et al. 2004. J. Biol. Chem.279, 20775.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
- UPC:
- 41116113
- Condition:
- New
- Weight:
- 1.00 Ounces
- HazmatClass:
- No
- WeightUOM:
- LB
- MPN:
- 208771-1MG