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219461

Sigma-Aldrich

Cathepsin K, His•Tag®, Human, Recombinant, E. coli

Cathepsin K, His•Tag, Human, Recombinant, E. coli, CAS 94716-09-3, of the papain superfamily of cysteine proteinases plays a role in osteoclast-mediated bone resorption and collagen degradation.

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About This Item

CAS Number:
94716-09-3
Enzyme Commission number:
3.4.22.38 (BRENDA, IUBMB)
MDL number:
MFCD00011084
UNSPSC Code:
12352202
NACRES:
NA.77

recombinant

expressed in E. coli

Quality Level

100

Assay

≥95% (SDS-PAGE)

form

liquid

specific activity

≥900 mU/mg protein

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
avoid repeated freeze/thaw cycles

shipped in

wet ice

storage temp.

−70°C

General description

Cathepsin K is a member of the papain superfamily of cysteine proteinases and plays an important role in osteoclast-mediated bone resorption and collagen degradation. It is primarily expressed by osteoclasts and recent studies also suggest its expression in fibroblasts. Irregularities in cathepsin K activity, either too high or too low, contribute to osteopenic disorders such as osteoporosis and pycnodysostosis. This recombinant enzyme contains a C-terminal His•Tag sequence.
Note: 1 mU = 1 milliunit.

Packaging

Please refer to vial label for lot-specific concentration.

Warning

Toxicity: Standard Handling (A)

Unit Definition

One unit is defined as the amount of enzyme that will hydrolyze 0.4 µmol Z-FR-AMC per min at 37°C, pH 5.5.

Physical form

In 50 mM NaOAC, pH 5.5. The activation was stopped by addition of 10 mM MMTS, which can be removed under reducing conditions.

Reconstitution

Following initial thaw, aliquot and freeze (-70°C).

Other Notes

Delaisse, J.M., et al. 2003. Microsc. Res. Tech.61, 504.
Dodds, R.A. 2003. Cell Biochem. Funct.21, 231.
Everts, V., et al. 2003. Calcif. Tissue Int.73, 380.
Hou, W.S., et al. 2003. Biol. Chem.384, 891.

Legal Information

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

Storage Class Code

12 - Non Combustible Liquids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

219461-UG:
219461-25UG:

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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Xiao-Yu Yuan et al.
Bioorganic & medicinal chemistry, 27(6), 1034-1042 (2019-02-19)
Selective proteinase inhibitors have demonstrated utility in the investigation of cartilage degeneration mechanisms and may have clinical use in the management of osteoarthritis. The cysteine protease cathepsin K (CatK) is an attractive target for arthritis therapy. Here we report the

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