Recombinant Rat Cathepsin K (CTSK) Protein (His)

Name: Recombinant Rat Cathepsin K (CTSK) Protein (His)
Brand: Beta LifeScience
SKU: BLC-03135P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Collections: Enzymes, Featured enzyme molecules, High-quality recombinant proteins, Protease

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Product Overview

Description	Recombinant Rat Cathepsin K (CTSK) Protein (His) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	O35186
Target Symbol	CTSK
Synonyms	Ctsk; Cathepsin K; EC 3.4.22.38
Species	Rattus norvegicus (Rat)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	VPDSIDYRKKGYVTPVKNQGQCGSCWAFSSAGALEGQLKKKTGKLLALSPQNLVDCVSENYGCGGGYMTTAFQYVQQNGGIDSEDAYPYVGQDESCMYNATAKAAKCRGYREIPVGNEKALKRAVARVGPVSVSIDASLTSFQFYSRGVYYDENCDRDNVNHAVLVVGYGTQKGNKYWIIKNSWGESWGNKGYVLLARNKNNACGITNLASFPKM
Expression Range	115-329aa
Protein Length	Full Length of Mature Protein
Mol. Weight	27.5kDa
Research Area	Others
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Thiol protease involved in osteoclastic bone resorption and may participate partially in the disorder of bone remodeling. Displays potent endoprotease activity against fibrinogen at acid pH. May play an important role in extracellular matrix degradation. Involved in the release of thyroid hormone thyroxine (T4) by limited proteolysis of TG/thyroglobulin in the thyroid follicle lumen.
Subcellular Location	Lysosome. Secreted. Apical cell membrane; Peripheral membrane protein; Extracellular side.
Protein Families	Peptidase C1 family
Database References	KEGG: rno:29175 STRING: 10116.ENSRNOP00000028730 UniGene: Rn.5598

Gene Functions References

the present study identified icariin as a novel therapeutic agent in DXM-induced cartilage injury in rats, and revealed that the activation of miR-206 targeting of cathepsin K may be responsible for the chondroprotective efficacy of icariin PMID: 29207029
cathepsin K, in both its secreted and lysosomal forms, may play a role in the degradation of Sertoli cell residual bodies PMID: 14585819
In conclusion, according to its ability to modulate hypotensive effects of kinins, we propose that cathepsin K is a kininase of biological relevance. PMID: 17181996
Comparison of the S2 site between rat and human cathepsin K sequences indicated that two S2 residues at Ser134 and Val160 in rat are varied to Ala and Leu, respectively, in the human enzyme. PMID: 18664521
The expression pattern of Ctsk in osteoclasts in physiological root resorption in the rat molar was determined. PMID: 18974601

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.