CTSA Mouse

Cathepsin-A Mouse Recombinant

CTSA produced in Sf9 Insect cells is a single, glycosylated polypeptide chain containing 459 amino acids (24-474 a.a.) and having a molecular mass of 52.4kDa (Molecular size on SDS-PAGE will appear at approximately 50-70kDa).
CTSA is expressed with an 8 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT30295
Source
Sf9 Insect cells.
Appearance
Sterile filtered colorless solution.

CTSB Mouse

Cathepsin-B Mouse Recombinant

CTSB Mouse Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 330 amino acids (18-339a.a.) and having a molecular mass of 36.4kDa (Molecular size on SDS-PAGE will appear at approximately 28-40kDa).
CTSB is expressed with an 8 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT30368
Source
Sf9, Baculovirus cells.
Appearance
Sterile Filtered clear solution.

CTSB Mouse, Active

Cathepsin-B Mouse Recombinant, Active

CTSB Mouse Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 330 amino acids (18-339a.a.) and having a molecular mass of 36.4kDa (Molecular size on SDS-PAGE will appear at approximately 28-40kDa).
CTSB is expressed with an 8 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT30406
Source
Sf9, Baculovirus cells.
Appearance
Sterile Filtered clear solution.

CTSC Mouse

Cathepsin-C Mouse Recombinant

CTSC Mouse Recombinant produced in HEK293 cells is a single, polypeptide chain containing 444 amino acids (25-462 a.a.) and having a molecular mass of 50.5kDa. CTSC is expressed with a 6 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.

Shipped with Ice Packs
Cat. No.
BT30432
Source

HEK293 cells.

Appearance
Sterile Filtered clear solution.

CTSD Human

Cathepsin-D Human Recombinant

CTSD produced in HEK293 cells is a single, glycosylated polypeptide chain containing 398 amino acids (21-412 a.a.) and having a molecular mass of 43.4kDa. CTSD is expressed with an 6 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.

Shipped with Ice Packs
Cat. No.
BT30457
Source

HEK293 Cells

Appearance
Sterile Filtered clear solution.

CTSD Mouse

Cathepsin-D Mouse Recombinant

CTSD produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 398 amino acids (21-410 a.a.) and having a molecular mass of 44.0kDa (Molecular size on SDS-PAGE will appear at approximately 40-57kDa). CTSD is expressed with an 8 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT30483
Source
Sf9, Baculovirus cells.
Appearance
Sterile Filtered colorless solution.

CTSE Human

Cathepsin-E Human Recombinant

CTSE Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 330 amino acids (57-363 a.a) and having a molecular mass of 35.4kDa.
CTSE is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT30527
Source
Escherichia Coli.
Appearance
Sterile Filtered clear solution.

CTSF Human

Cathepsin-F Human Recombinant

CTSF Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 237 amino acids (271-484) and having a molecular mass of 26kDa.CTSF is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT30577
Source
Escherichia Coli.
Appearance
Sterile Filtered colorless solution.

CTSF Human, Sf9

Cathepsin-F Human Recombinant, Sf9

CTSF produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 474 amino acids (20-484.a.a) and having a molecular mass of 52.5kDa.
CTSF is expressed with a 6 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.

Shipped with Ice Packs
Cat. No.
BT30605
Source

Sf9, Baculovirus cells.

Appearance

Sterile filtered colorless solution.

CTSL Human

Cathepsin-L Human Recombinant

CTSL Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 339 amino acids (18-333 a.a) and having a molecular mass of 38.3kDa.
CTSL is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.
Shipped with Ice Packs
Cat. No.
BT30630
Source
Escherichia Coli.
Appearance
Sterile Filtered clear solution.
Definition and Classification

Cathepsins are a family of proteases (enzymes that degrade proteins) found in all animals and other organisms. The term “cathepsin” is derived from the Greek words “kata-” meaning “down” and “hepsein” meaning "boil" . These enzymes are primarily located in lysosomes, where they play a crucial role in protein degradation. Cathepsins are classified into three main types based on their catalytic mechanisms: cysteine proteases, aspartic proteases, and serine proteases .

Biological Properties

Cathepsins exhibit a variety of biological properties, including their expression patterns and tissue distribution. They are most abundant in lysosomal compartments, where they function optimally at acidic pH levels . Different cathepsins are expressed in various tissues:

  • Cathepsin K: Found in osteoclasts and epithelial cells.
  • Cathepsin S, E, and W: Predominantly expressed in immune cells .
Biological Functions

Cathepsins are involved in several primary biological functions:

  • Protein Degradation: They break down proteins into peptides and amino acids.
  • Immune Responses: Cathepsins play a role in antigen processing and presentation, which is crucial for immune responses .
  • Pathogen Recognition: They are involved in the degradation of pathogens within lysosomes .
Modes of Action

Cathepsins interact with other molecules and cells through various mechanisms:

  • Binding Partners: They bind to specific substrates and inhibitors.
  • Downstream Signaling Cascades: Cathepsins can activate or inhibit signaling pathways that regulate cell survival, apoptosis, and inflammation .
Regulatory Mechanisms

The expression and activity of cathepsins are tightly regulated through several mechanisms:

  • Transcriptional Regulation: Gene expression of cathepsins is controlled by transcription factors.
  • Post-Translational Modifications: Cathepsins undergo modifications such as glycosylation, which affect their stability and activity .
  • Endogenous Inhibitors: Proteins like stefins, cystatins, and serpins regulate cathepsin activity by inhibiting their proteolytic functions .
Applications

Cathepsins have significant applications in biomedical research, diagnostics, and therapeutics:

  • Biomedical Research: They are studied for their roles in various diseases, including cancer and cardiovascular diseases .
  • Diagnostic Tools: Differential expression of cathepsins can serve as biomarkers for disease progression .
  • Therapeutic Strategies: Selective inhibitors of cathepsins are being developed as potential treatments for diseases .
Role in the Life Cycle

Cathepsins play vital roles throughout the life cycle, from development to aging and disease:

  • Development: They are involved in tissue remodeling during embryogenesis and development .
  • Aging: Cathepsin activity is linked to the degradation of cellular components, which is crucial for maintaining cellular homeostasis .
  • Disease: Dysregulated cathepsin activity is associated with various diseases, including cancer, neurodegenerative disorders, and cardiovascular diseases .
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