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-P4295
    Z-Phe-Ala-diazomethylketone
    		Inhibitor
    Z-Phe-Ala-diazomethylketone binds directly to Aβ42 monomers and small oligomers. Z-Phe-Ala-diazomethylketone inhibits the formation of Aβ42 dodecamers and inhibits Aβ42 fibril formation in the solution. Z-Phe-Ala-diazomethylketone has the potential for neurodegenerative disorders research.
    Z-Phe-Ala-diazomethylketone
  • 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-17541A
    Cysteine Protease inhibitor hydrochloride
    		Inhibitor
    Cysteine Protease inhibitor hydrochloride is an inhibitor of cysteine protease.
    Cysteine Protease inhibitor hydrochloride
  • HY-18234
    Leupeptin
    		Inhibitor
    Leupeptin is a broad-spectrum, membrane-permeable protease inhibitor. Leupeptin potently inhibits serine, cysteine and threonine proteases. Leupeptin inhibits Mpro (the main protease of SARS-CoV-2) and also has anti-inflammatory activity.
    Leupeptin
  • HY-P0109
    (S,S)-Z-FA-FMK
    		Inhibitor
    (S,S)-Z-FA-FMK is a cell-permeable, irreversible cathepsin B inhibitor. (S,S)-Z-FA-FMK blocks LPS-induced production of IL-1α and IL-1β. (S,S)-Z-FA-FMK can be used as a negative control for caspase-1 and caspase-2 inhibitors because it lacks an aspartic acid residue at the P1 position.
    (S,S)-Z-FA-FMK
  • HY-P2498
    Cathepsin D and E FRET Substrate
    Cathepsin D and E FRET Substrate is a fluorogenic substrate for cathepsins D and E and not for B, H or L. The cleavage occurs at the Phe-Phe amide bond resul. Cathepsin D and E FRET Substrate is a valuable tool for routine assays and for mechanistic studies on cathepsins E and D.
    Cathepsin D and E FRET Substrate
  • HY-149069
    TSC25
    		Inhibitor
    TSC25 is a potent cruzipain (CZP) inhibitor, with an IC50 of 3.34 nM and a pIC50 of 8.48.
    TSC25
  • HY-P4787
    Ac-Glu-Asp(EDANS)-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Gly-Lys(DABCYL)-Glu-NH2
    Ac-Glu-Asp(EDANS)-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Gly-Lys(DABCYL)-Glu-NH2 is a cathepsin D substrate, that can be used for cathepsin D FRET assay.
    Ac-Glu-Asp(EDANS)-Lys-Pro-Ile-Leu-Phe-Phe-Arg-Leu-Gly-Lys(DABCYL)-Glu-NH2
  • HY-P3012
    Cathepsin G
    		Agonist
    Cathepsin G acts as a potent agonist of human platelet activation leading to their aggregation., and can be used for screening of relevant inhibitors.
    Cathepsin G
  • HY-P4293
    Z-Leu-Tyr-Chloromethylketone
    Z-Leu-Tyr-Chloromethylketone is a calpain inhibitor.
    Z-Leu-Tyr-Chloromethylketone
  • HY-P4561
    H-Pro-Thr-Glu-Phe-p-nitro-Phe-Arg-Leu-OH
    H-Pro-Thr-Glu-Phe-p-nitro-Phe-Arg-Leu-OH is a water-soluble polypeptide that can serve as a substrate for cathepsin D, pepsin and pepsinogen. H-Pro-Thr-Glu-Phe-p-nitro-Phe-Arg-Leu-OH has potential applications in biochemical analysis.
    H-Pro-Thr-Glu-Phe-p-nitro-Phe-Arg-Leu-OH
  • HY-P10008
    Cathepsin D/E Substrate, Fluorogenic
    Cathepsin D/E Substrate, Fluorogenic, 11 amino acid peptide, is a selective substrate for cathepsins D and E. Cathepsin D/E Substrate, Fluorogenic does not act as a substrate for cathepsins B, H, or L.
    Cathepsin D/E Substrate, Fluorogenic
  • HY-E70197
    Calpain-1 (pig)
    Calpain-1 (pig) (μ-Calpain) is an intracellular Ca2+-regulated cysteine protease. Calpain-1 (pig) exhibits neuroprotective effect.
    Calpain-1 (pig)
  • HY-157477
    SARS-CoV-2 3CLpro-IN-22
    		Inhibitor
    SARS-CoV-2 3CLpro-IN-22 (Compound 17) is a cathepsin L (CTSL ) inhibitor with an IC50 value of 32.5 nM. SARS-CoV-2 3CLpro-IN-22 can be used for the study of SARS-CoV-2 virus.
    SARS-CoV-2 3CLpro-IN-22
  • HY-163842
    Cathepsin K inhibitor 7
    		Inhibitor
    Cathepsin K inhibitor 7 (compound 7) is a Cathepsin K inhibitor with the pKi of 7.3 aganist CatK. Cathepsin K inhibitor 7 can be used for study of osteoporosis.
    Cathepsin K inhibitor 7
  • HY-P4494
    Suc-Val-Pro-Phe-pNA
    Suc-Val-Pro-Phe-pNA is a substrate for cathepsin G and can be used to detect the activity of this enzyme.
    Suc-Val-Pro-Phe-pNA
  • HY-161245
    FGA146
    		Inhibitor
    FGA146 is a dual, selective inhibitor for Mpro and human Cathepsin L, with Kis of 2.19 μM, 0.96 μM and 0.87 μM, for Mal-Mpro, pET21-Mpro and Cathepsin L, respectively. FGA146 reveals an antiviral activity against SARS-CoV-2.
    FGA146
  • HY-143714
    Cathepsin K inhibitor 2
    		Inhibitor
    Cathepsin K inhibitor 2 is a potent inhibitor of cathepsin K. Cathepsin K, Cat K is a cysteine protease expressed under the control of CTSK gene and closely related to osteoporosis, whose main function is to hydrolyze collagen. Cathepsin K inhibitor 2 has the potential for the research of osteoarthfitis (extracted from patent WO2021147882A1, compound 78).
    Cathepsin K inhibitor 2
  • HY-P10065
    RKLLW-NH2
    		Inhibitor
    RKLLW-NH2 is a Cathepsin L inhibitor.
    RKLLW-NH2
  • HY-P4532
    Ac-Leu-Val-Lys-Aldehyde
    		Inhibitor
    Ac-Leu-Val-Lys-Aldehyde is a potent cathepsin B inhibitor with IC50s of 4 nM. Ac-Leu-Val-Lys-Aldehyde significantly reduces quinolinic acid (HY-100807)-induced striatal cell death and causes accumulation of LC3-II.
    Ac-Leu-Val-Lys-Aldehyde
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
Cathepsin Isoform Comparison

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