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You are here:Home » Molecular Biology » MB-Protease Inhibitors » CST4, Recombinant, Human, aa21-141, His-Tag (Cystatin-SA-III, Salivary Acidic Protein 1, Cystatin-4, Cystatin-S)

CST4, Recombinant, Human, aa21-141, His-Tag (Cystatin-SA-III, Salivary Acidic Protein 1,
Cystatin-4, Cystatin-S)

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Specifications

CST4 (Cystatin-S) belongs to the cystatin family. The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired this inhibitory activity. This protein strongly inhibits papain and ficin, partially inhibits stem bromelain and bovine cathepsin C, but does not inhibit porcine cathepsin B or clostripain. Papain is inhibited non-competitively.
Catalog #045421
SourceRecombinant corresponding to aa21-141 from human CST4, fused to His-tag at N-terminus, expressed in E.coli.
Molecular Weight~16.8kD (145aa) confirmed by MALDI-TOF
AA SequenceMGSSHHHHHH SSGLVPRGSH MGSMSSSKEE NRIIPGGIYD ADLNDEWVQR ALHFAISEYN KATEDEYYRR PLQVLRAREQ TFGGVNYFFD VEVGRTICTK SQPNLDTCAF HEQPELQKKQ LCSFEIYEVP WEDRMSLVNS RCQEA
Storage and StabilityMay be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Molecular Weight~16.8kD
SourceE.coli
Purity~95% (SDS-PAGE)
Concentration~1mg/ml
FormSupplied as a liquid in 20mM Tris-HCl, pH 8.0, 1mM DTT, 50mM sodium chloride, 10% glycerol.
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


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