219461

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.

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

Properties

• 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

Description

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.

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. Recently reported to also be expressed in fibroblasts. Irregularities in activity contribute to osteopenic disorders such as osteoporosis and pycnodysostosis. Contains a C-terminal His•Tag.

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

Safety Information

• Storage Class Code: 12 - Non Combustible Liquids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable