General description
An internally quenched fluorogenic substrate peptide derived from the calpain-1 cleavage site of α-spectrin. It is not recognized by trypsin or α-chymotrypsin and serves as a sensitive and specific substrate for calpain-1 (Km = 4.6 µM; kcat = 11 s-1). Cleavage occurs at the Tyr-Gly bond and results in enhanced fluorescence. Excitation max: ~490 nm; emission max: ~518 nm.
Biochem/physiol Actions
Cell permeable: no
Primary Target
A sensitive and specific substrate for calpain-1
Product does not compete with ATP.
Reversible: no
Packaging
Packaged under inert gas
Physical form
Supplied as a trifluoroacetate salt.
Preparation Note
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Other Notes
H-Lys(FAM)-Glu-Val-Tyr~Gly-Met-Met-Lys(DABCYL)-OH
Mittoo, S., et al. 2003. Anal. Biochem.319, 234.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Standard Handling (A)
| Quality Segment | 100 |
| assay | ≥95% (HPLC) |
| form | lyophilized solid |
| manufacturer/tradename | Calbiochem® |
| storage condition | OK to freeze,desiccated (hygroscopic),protect from light |
| color | red |
| solubility | DMSO: 1 mg/mL |
| fluorescence | λex ~490 nm,λem ~518 nm |
| shipped in | wet ice |
| storage temp. | −20°C |
