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208748

Sigma-Aldrich

Calpain-1 Substrate, Fluorogenic

An internally quenched fluorogenic substrate peptide derived from the calpain-1 cleavage site of α-spectrin.

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Synonym(s):
Calpain-1 Substrate, Fluorogenic, μ-Calpain Substrate, Fluorogenic, H-K(FAM)-EVY~GMMK(DABCYL)-OH
Empirical Formula (Hill Notation):
C79H95N13O19S2
Molecular Weight:
1594.81

Quality Level

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

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Calpain Substrate III, Fluorogenic

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218739

Caspase-1 Substrate X, Fluorogenic

assay

≥95% (HPLC)

assay

≥98% (HPLC)

assay

≥95% (HPLC)

assay

≥95% (HPLC)

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

color

red

color

red

color

-

color

-

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

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.
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 between Tyr-Gly residues and results in enhanced fluorescence.

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

Warning

Toxicity: Standard Handling (A)

Sequence

H-Lys(FAM)-Glu-Val-Tyr~Gly-Met-Met-Lys(DABCYL)-OH

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

Mittoo, S., et al. 2003. Anal. Biochem.319, 234.

Legal Information

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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David S Dang et al.
Meat science, 162, 108039-108039 (2020-01-15)
The purpose of this study was to examine the role of mitochondria in postmortem calcium homeostasis and its effect on proteolysis and tenderness. We hypothesized that mitochondria buffer cytosolic calcium levels and delay the activation of calpain-1 and subsequently the

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