208902
Calpastatin Peptide
A 27-amino acid, cell-permeable peptide encoded by exon 1B of human calpastatin that acts as a potent inhibitor of calpain I and calpain II (IC50 = 20 nM for purified rabbit calpain II).
Synonym(s):
Calpastatin Peptide, CS Peptide
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About This Item
Empirical Formula (Hill Notation):
C142H230N36O44S
Molecular Weight:
3177.63
NACRES:
NA.77
UNSPSC Code:
12352202
Assay:
≥95% (HPLC)
Form:
lyophilized solid
Storage condition:
OK to freeze, desiccated (hygroscopic)
Quality Segment
assay
≥95% (HPLC)
form
lyophilized solid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze, desiccated (hygroscopic)
color
white
solubility
1% acetic acid: 1 mg/mL, water: 1 mg/mL
shipped in
ambient
storage temp.
−20°C
General description
A 27-amino acid, cell-permeable peptide encoded by exon 1B of human calpastatin that acts as a potent inhibitor of calpain I and calpain II (IC50 = 20 nM for purified rabbit calpain II). Does not inhibit either papain or trypsin. Blocks the down-regulation of protein kinase Cε (PKCε) in rat pituitary GH4C1 cells stimulated by thyrotropin-releasing hormone (TRH).
A 27-amino acid, peptide encoded by exon 1B of human calpastatin that acts as a cell-permeable and potent inhibitor of calpain I and calpain II (IC50 = 20 nM for purified rabbit calpain II). Does not inhibit either papain or trypsin. Blocks the down-regulation of protein kinase Cε (PKCε) in rat pituitary GH4C1 cells stimulated by thyrotropin-releasing hormone (TRH).
Biochem/physiol Actions
Product does not compete with ATP.
Reversible: no
Target IC50: 20 nM against calpain II
Cell permeable: yes
Primary Target
calpain 2
calpain 2
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
Ac-Asp-Pro-Met-Ser-Ser-Thr-Tyr-Ile-Glu-Glu-Leu-Gly-Lys-Arg-Glu-Val-Thr-Ile-Pro-Pro-Lys-Tyr-Arg-Glu-Leu-Leu-Ala-NH₂
Eto, A., et al. 1995. J. Biol. Chem. 270, 25115.
Kawasaki, J., et al. 1989. J. Biochem. 106, 274.
Maki, M., et al. 1989. J. Biol. Chem. 264, 18866.
Kawasaki, J., et al. 1989. J. Biochem. 106, 274.
Maki, M., et al. 1989. J. Biol. Chem. 264, 18866.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Standard Handling (A)
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Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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