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Merck

208773

Calpain Substrate IV, Cell-Permeable, Fluorogenic

The non-permeant fluorogenic Calpain Substrate III is made cell-permeable by a c-terminal heptaarginine extension via a Glu linkage.

Synonym(s):

Calpain Substrate IV, Cell-Permeable, Fluorogenic

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About This Item

Empirical Formula (Hill Notation):
C127H206N50O27S
Molecular Weight:
2897.38
NACRES:
NA.77
UNSPSC Code:
12352200
Assay:
≥95% (HPLC)
Form:
lyophilized solid
Quality level:
Storage condition:
OK to freeze, desiccated (hygroscopic), protect from light
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assay

≥95% (HPLC)

form

lyophilized solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze, desiccated (hygroscopic), protect from light

solubility

DMSO: 5 mg/mL

fluorescence

λex 480 nm; λem 320 nm

shipped in

ambient

storage temp.

−20°C

Quality Level

General description

The non-permeant fluorogenic Calpain Substrate III (Cat. No. 208771) is made cell-permeable by a c-terminal heptaarginine extension via a Glu linkage. In addition to the expected improvement in permeability, the modified peptide also exhibits enhanced Calpain B sensitivity (kcat = 0.2 s-1, kcat/KM = 5000 M-1 s-1) when compared to the parental peptide (kcat = 0.17 s-1, kcat/KM = 680 M-1 s-1). Its suitability in detecting cellular Ca2+-dependent calpain activity is demonstrated both in intact Drosophila melanogaster S2 cells following ionomycin stimulation and in S2 lysates via direct Ca2+ addition.
The non-permeant fluorogenic Calpain Substrate III is made cell-permeable by a c-terminal heptaarginine extension via a Glu linkage.

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

(DABCYL)-Thr-Pro-Leu-Lys~Ser-Pro-Pro-Pro-Ser-Pro-Arg-Glu(EDANS)-Arg-Arg-Arg-Arg-Arg-Arg-Arg-NH₂
Banoczi, Z., et al. 2008. Bioconjug. Chem.19, 1375.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Disclaimer

Toxicity: Standard Handling (A)

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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