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-P4373
    Hepcidin-1 (mouse)
    		Inducer
    Hepcidin-1 (mouse) is an endogenous peptide hormone involved in the regulation of iron homeostasis. Hepcidin-1 (mouse) upregulates mRNA levels of TRAP, cathepsin K, and MMP-9 and increases TRAP-5b protein secretion. Hepcidin-1 (mouse) downregulates the level of FPN1 protein and increases intracellular iron. Hepcidin-1 (mouse) facilitates osteoclast differentiation.
    Hepcidin-1 (mouse)
  • HY-112583
    MIV-247
    		Inhibitor
    MIV-247 is a selective cathepsin S inhibitor with Kis of 2.1, 4.2 and 7.5 nM for human, mouse and cynomolgus monkey cathepsin S, respectively.
    MIV-247
  • HY-50887
    L-873724
    		Inhibitor 98.93%
    L-873724 is a potent, orally bioavailable, selective and reversible non-basic cathepsin K inhibitor, with IC50s of 0.2, 178, 264, and 5239 nM for cathepsin K, cathepsin S, cathepsin L, cathepsin B, respectively. L-873724 also exhibits an IC50 of 0.5 nM for rabbit cathepsin K. L-873724 inhibits bone resorption.
    L-873724
  • HY-129116
    SSAA09E1
    		Inhibitor 99.54%
    SSAA09E1 is a cathepsin L blocker (IC50: 5.33 μM).SSAA09E1 inhibits stages of viral entry. SSAA09E1 can be used for SARS-CoV infection research
    SSAA09E1
  • HY-P4306
    Z-Phe-Phe-Diazomethylketone
    		Inhibitor
    Z-Phe-Phe-Diazomethylketone is a selective inhibitor of cathepsin L.
    Z-Phe-Phe-Diazomethylketone
  • HY-170772
    Dual Cathepsin L/JAK-IN-1
    		Inhibitor
    Dual Cathepsin L/JAK-IN-1 (Compound A8) is a dual inhibitor of Cathepsin L (CTSL) and JAK, with IC50 values of 0.68 μM, 337.1 nM, 5.251 nM, 27.29 nM, and 172.6 nM for CTSL, JAK1/2/3, and TYK2, respectively. Dual Cathepsin L/JAK-IN-1 effectively blocks the activation of the MAPK, NF-κB, and JAK/STAT signaling pathways, leading to significant anti-inflammatory therapeutic effects. Dual Cathepsin L/JAK-IN-1 can be used in research on acute lung injury (ALI).
    Dual Cathepsin L/JAK-IN-1
  • HY-158307
    Z-Arg-Arg-βNA acetate
    Z-Arg-Arg-βNA acetate is a sensitive dipeptide substrate of the protease Cathepsin B and resistant to proteases H and L. Z-Arg-Arg-βNA acetate can serve as an important tool for distinguishing non-Cathepsin B type proteins.
    Z-Arg-Arg-βNA acetate
  • HY-129578R
    Asperphenamate (Standard)
    		Inhibitor
    Asperphenamate (Standard) is the analytical standard of Asperphenamate. This product is intended for research and analytical applications. Asperphenamate, a fungal metabolite of Aspergillus flatiipes with anti-cancer effect, exhibits IC50 values of 92.3 μM, 96.5 μM and 97.9 μM in T47D, MDA-MB-231 and HL-60 cells, respectively[1][2].
    Asperphenamate (Standard)
  • 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-161721
    Cathepsin Inhibitor 4
    		Inhibitor
    Cathepsin Inhibitor 4 (Compound 45) is a selective inhibitor for Cathepsin S with Ki of 0.04 nM.
    Cathepsin Inhibitor 4
  • 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-P4583
    Suc-Val-Pro-Phe-SBzl
    Suc-Val-Pro-Phe-SBzl (succinyl-valine-proline-phenylalanine thiobenzyl ester) is an inhibitor of CatG enzymes with IC50 values of 111-225 mM.
    Suc-Val-Pro-Phe-SBzl
  • 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-111176
    PD 145305
    		Control
    PD 145305 (3-Phenyl-2-sulfanylpropanoic acid) is an inactive analogue of PD150606. PD150606 is a selective calpain inhibitor.
    PD 145305
  • HY-146068
    AEP-IN-1
    AEP-IN-1 (Compound 13e) is a CNS agent-like non-covalent inhibitor of asparagine endopeptidase (AEP), with the IC50 of 89 nM. AEP-IN-1 can be used for the research of numerous neurological diseases such as Alzheimer’s disease (AD).
    AEP-IN-1
  • HY-N4289R
    3-Epiursolic Acid (Standard)
    		Inhibitor
    α-Vitamin E (Standard) is the analytical standard of α-Vitamin E. This product is intended for research and analytical applications. α-Vitamin E ((+)-α-Tocopherol), a naturally occurring vitamin E form, is a potent antioxidant.
    3-Epiursolic Acid (Standard)
  • HY-P4293
    Z-Leu-Tyr-Chloromethylketone
    Z-Leu-Tyr-Chloromethylketone is a calpain inhibitor.
    Z-Leu-Tyr-Chloromethylketone
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
Cathepsin Isoform Comparison

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