Calpain S2 peptide (Aminoterminal end domain V) (ab41378)

Product Name 

Calpain S2 peptide (Aminoterminal end domain V)

Product type 

Proteins and Peptides

Peptide 

Synthetic peptide Calpain S2.

Specificity 

We have a range of domain specific antibodies for this target. For a full list please see all Calpain S2 antibodies

Tested applications 
(see key)

ELISA, WB

Application notes 
(see key)

Recommended dilutions
ELISA: Use at an assay dependent dilution. WB: Use at an assay dependent dilution. This peptide can be used with studies using ab28241. Dilution optimised using Chromogenic detection. Not yet tested in other applications. Optimal dilutions/concentrations should be determined by the end user.

Research areas 

Cell Biology >> Proteolysis / Ubiquitin >> Proteolytic enzymes >> Cysteine protease >> Calpains
Signal Transduction >> Signaling Pathway >> Calcium Signaling >> Calpain

Relevance 

Both M-calpain and m-calpain are ubiquitously expressed in mammalian cells, and are countered by the endogenous calpain inhibitor, calpastatin. Other calpain family members (calpain-3, calpain-5, calpain-9, etc) have more limited tissue distribution, and perhaps different functions. The calpain family members consist of a common small subunit (Calpain-S1), and a large variable subunit. It is not clear that all calpains form heterodimers with a small subunit, but calpain-S1 is known to form a heterodimer with calpain-1 and also with calpain-2. Calpain S2 was recently discovered, and initial studies indicate that both small subunits may act as chaperonins to help with folding, or accessory proteins to help localize the calpains. Domains in the small subunit include the amino terminal domain-V (a glycine-rich sequence that is removed on activation of calpain, shorter in calpain-S2 than in calpain S1) and domain-VI, the calcium binding, EF hand domain.

Purity 

>95% by SDS-PAGE

Storage buffer 

Preservative: None
Constituents: 0.001% Tween 20, 30mM HEPES, 2mM EDTA, 150mM Sodium chloride, pH 6.75

Form 

Liquid

Concentration 

1.000 mg/ml

Storage instructions 

Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

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