2. Signaling Pathways
  3. Metabolic Enzyme/Protease
  4. Cathepsin

Cathepsin

Cathepsin

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Cathepsins are protease enzymes, categorized into multiple families. Cathepsins can be serine protease, cysteine protease, or aspartyl protease. There are about 15 classes of cathepsins in humans (Cathepsin A, B, C, D, E, F, G, H, K, L, O, S, V, W, and Z). Cathepsins are active in the low pH milieu of lysosomes and are versatile in their functions. Like other enzymes, they are vital for the normal physiological functions such as digestion, blood coagulation, bone resorption, ion channel activity, innate immunity, complement activation, apoptosis, vesicular trafficking, autophagy, angiogenesis, proliferation, and metastasis, among scores of others.

Numerous pathologies have been attributed to the dysregulated cathepsins, some of which include arthritis, periodontitis, pancreatitis, macular degeneration, muscular dystrophy, atherosclerosis, obesity, stroke, Alzheimer's disease, schizophrenia, tuberculosis, and Ebola.

Cathepsin Isoform Specific Products:

Cathepsin Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-N4288
    4-Methylesculetin
    		Inhibitor 98.09%
    4-Methylesculetin is an orally active coumarin derivative, with potent anti-oxidant and anti-inflammatory activities. 4-Methylesculetin inhibits myeloperoxidase activity. 4-Methylesculetin protects bone resorption by reducing the elevated levels of bone-joint exoglycosidases, cathepsin-D and tartrate resistant acid phosphatases. 4-Methylesculetin ameliorats the upregulated non-enzymatic inflammatory markers like TNF-α, IL-1β, IL-6, COX-2 and PGE2, which is promising for research of inflammatory diseases.
    4-Methylesculetin
  • HY-P4340A
    Arg-Arg-AMC acetate
    		99.93%
    Arg-Arg-AMC acetate is the acetate salt form of Arg-Arg-AMC (HY-P4340). Arg-Arg-AMC acetate is a fluorescent substrate for cathepsin B and used in the cathepsin B activity assay.
    Arg-Arg-AMC acetate
  • HY-162076
    AEP-IN-3
    		99.71%
    AEP-IN-3 (compound 18) is an orally active, potent and brain penetrant asparagine endopeptidase (AEP) inhibitor, with an IC50 of 7.8 ± 0.9 nM. AEP-IN-3 can be used for Alzheimer’s Disease (AD) research.
    AEP-IN-3
  • HY-153986
    AEP-IN-2
    		Inhibitor 99.13%
    AEP-IN-2 is an asparagine endopeptidase (AEP) inhibitor via block AEP cleavage of APP and Tau. AEP-IN-2 has oral activity and decreases Aβ40 and Aβ42 and p-Tau levels .
    AEP-IN-2
  • HY-137841
    L-Arginine-7-amido-4-methylcoumarin hydrochloride
    		99.23%
    L-Arginine-7-amido-4-methylcoumarin (Arginine 4-methyl-7-coumarylamide) hydrochloride is a specific substrate of cathepsin H but not for cathepsins L and B.
    L-Arginine-7-amido-4-methylcoumarin hydrochloride
  • HY-147774
    Cathepsin K inhibitor 6
    		Inhibitor 98.18%
    Cathepsin K inhibitor 6 (compound 19) is an inhibitor of cathepsin K (Cat K) with an IC50 of 17 nM. Cathepsin K inhibitor 6 also has inhibitory effects on other isoforms, with IC50s of 0.05 μM (Cat L) and 0.3 μM (Cat B), respectively.
    Cathepsin K inhibitor 6
  • HY-U00377
    Cathepsin Inhibitor 2
    		Inhibitor 98.05%
    Cathepsin Inhibitor 2 is a potent Cathepsin S inhibitor extracted from patent WO2009123623A1, has a Ki of <20 nM.
    Cathepsin Inhibitor 2
  • HY-Y0241
    2-Cyanopyrimidine
    		Inhibitor 99.92%
    2-Cyanopyrimidine is a potent and non-selective cysteine protease cathepsin K inhibitor with an IC50 of 170 nM. 2-Cyanopyrimidine is used for osteoporos.
    2-Cyanopyrimidine
  • HY-100227
    E 64c
    		Inhibitor 99.32%
    E 64c is a derivative of naturally occurring epoxide inhibitor of cysteine proteases, a Calcium-activated neutral protease (CANP) inhibitor and a very weak irreversible cathepsin C inhibitor. E 64c exhibits entry-blocking effect for MERS-CoV.
    E 64c
  • HY-N4289
    3-Epiursolic Acid
    		Inhibitor 99.77%
    3-Epiursolic Acid is a triterpenoid that can be isolated from Eriobotrya japonica, acts as a competitive inhibitor of cathepsin L (IC50, 6.5 μM; Ki, 19.5 μM), with no obvious effect on cathepsin B.
    3-Epiursolic Acid
  • HY-N6037
    Gardenin B
    		Inhibitor 99.69%
    Gardenin B is a methoxyflavone compound and an inhibitor of USP7, ODC (IC50: 6.24 μg/mL), and Cathepsin D (IC50: 5.61 μg/mL). Gardenin B exhibits antioxidant and antitumor activities. Gardenin B shows IC50 values of 8.87 and 10.59 μg/mL for DPPH and NO scavenging, respectively, and also possesses ferric ion reducing ability. Additionally, Gardenin B can inhibit tumor cell proliferation, induce cell cycle arrest and apoptosis. Gardenin B can be used in cancer research.
    Gardenin B
  • HY-144636
    Atg4B-IN-2
    		Inhibitor 98.03%
    Atg4B-IN-2 is a potent competitive Atg4B inhibitor with Ki value of 3.1 μM, also possesses declining PLA2 inhibitory potency, IC50s of 11 μM and 3.5 μM for Atg4B and PLA2, respectively. Atg4B-IN-2 enhances the anticancer activity of anti-castration-resistant prostate cancer agents via autophagy inhibition.
    Atg4B-IN-2
  • HY-RS03331
    CTSE Human Pre-designed siRNA Set A
    		Inhibitor

    CTSE Human Pre-designed siRNA Set A contains three designed siRNAs for CTSE gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control.
    CTSE Human Pre-designed siRNA Set A
  • HY-P4500
    Z-Arg-Arg-pNA
    		99.17%
    Z-Arg-Arg-pNA is a substrate for cathepsin B and can be used to detect this enzyme activity.
    Z-Arg-Arg-pNA
  • HY-N10109A
    Gallinamide A TFA
    		Inhibitor 99.85%
    Gallinamide A TFA is a linearly depositing peptide and a potent inhibitor of cathepsin L (CatL) (IC50: 17.6 pM). Gallinamide A TFA inhibits SARS-CoV-2 infection by inhibiting CatL (EC50: 28 nM). Gallinamide A TFA also inhibits Plasmodium falciparum (IC50: 50 nM).
    Gallinamide A TFA
  • HY-17541A
    Cysteine Protease inhibitor hydrochloride
    		Inhibitor
    Cysteine Protease inhibitor hydrochloride is a cysteine protease inhibitor. Cysteine Protease inhibitor hydrochloride can be used in immunoblotting experiments of cells or tissues.
    Cysteine Protease inhibitor hydrochloride
  • HY-RS03328
    CTSD Human Pre-designed siRNA Set A
    		Inhibitor

    CTSD Human Pre-designed siRNA Set A contains three designed siRNAs for CTSD gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control.
    CTSD Human Pre-designed siRNA Set A
  • HY-138208
    Z-Phe-Tyr(tBu)-diazomethylketone
    		Inhibitor ≥99.0%
    Z-Phe-Tyr(tBu)-diazomethylketone is a potent cathepsin L inhibitor. Z-Phe-Tyr(tBu)-diazomethylketone mediates reovirus disassembly. Z-Phe-Tyr(tBu)-diazomethylketone decreases viral detection.
    Z-Phe-Tyr(tBu)-diazomethylketone
  • HY-RS03329
    Ctsd Mouse Pre-designed siRNA Set A
    		Inhibitor

    Ctsd Mouse Pre-designed siRNA Set A contains three designed siRNAs for Ctsd gene (Mouse), as well as a negative control, a positive control, and a FAM-labeled negative control.
    Ctsd Mouse Pre-designed siRNA Set A
  • HY-W010347R
    L-Homocysteine (Standard)
    		Activator
    L-Homocysteine (Standard) is the analytical standard of L-Homocysteine. This product is intended for research and analytical applications. L-Homocysteine, an amino acid, is a homocysteine that has L configuration. Homocysteine is an essential intermediate in normal mammalian metabolism of methionine. L-Homocysteine induces upregulation of Cathepsin V that mediates vascular endothelial inflammation in hyperhomocysteinaemia[1][2].
    L-Homocysteine (Standard)
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
Cathepsin Isoform Comparison

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