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-D0843
    N-Ethylmaleimide
    		Inhibitor 99.89%
    N-Ethylmaleimide (NEM) derives from maleic acid, it can alkylates free sulfhydryl. N-Ethylmaleimide is an irreversible cysteine protease inhibitor. N-ethylmaleimide specific inhibits phosphate transport in mitochondria. N-Ethylmaleimide inhibits prolyl endopeptidase with an IC50 value of 6.3 μM. N-Ethylmaleimide can be used to modify cysteine residues in proteins and peptides.
    N-Ethylmaleimide
  • HY-18234A
    Leupeptin hemisulfate
    		Inhibitor 99.39%
    Leupeptin hemisulfate is a broad-spectrum, membrane-permeable protease inhibitor. Leupeptin hemisulfate potently inhibits serine, cysteine and threonine proteases. Leupeptin hemisulfate inhibits Mpro (the main protease of SARS-CoV-2) and also has anti-inflammatory activity.
    Leupeptin hemisulfate
  • HY-B0496
    PMSF
    		Inhibitor 99.32%
    PMSF (Phenylmethylsulfonyl fluoride) is a nonspecific and irreversible serine proteases inhibitor. PMSF inhibits some thiol proteases, non-protease enzymes, and acetylcholinesterase. PMSF can be used to prepare protein extracts from tissue and cell lysates.
    PMSF
  • HY-148905
    p-Aminophenylmercuric acetate
    		Activator 98.32%
    p-Aminophenylmercuric acetate is an organomercurial activator of matrix metalloproteinases (MMP). P-Aminophenylmercuric acetate participates in the activation and inhibition of MMP-8 by attacking protein sulfhydryl or inducing cysteine switching reaction. p-Aminophenylmercuric acetate promotes the shedding of betacellulin precursor (pro-BTC). p-Aminophenylmercuric acetate influences the binding of agonists and antagonists to the opiate receptor.
    p-Aminophenylmercuric acetate
  • HY-100229
    Aloxistatin
    		Inhibitor 99.94%
    Aloxistatin (E64d) is a cell-permeable and irreversible broad-spectrum cysteine protease inhibitor. Aloxistatin (E64d) exhibits entry-blocking effect for MERS-CoV.
    Aloxistatin
  • HY-182757
    Y1693
    		Inhibitor 99.91%
    Y1693 is an orally active RANKL inhibitor with a Kd of 5.03 μM for hRANKL. Y1693 inhibits the activation of the downstream c-fos/NFATc1 signaling pathway by blocking its interaction with RANK. Y1693 significantly inhibits RANKL-induced osteoclast differentiation, F-actin ring formation and bone resorptive activity, while downregulating the mRNA and protein expressions of TRAP, cathepsin K, c-fos and NFATc1. Y1693 shows no obvious cytotoxicity to bone marrow-derived macrophages and osteoclast precursor cells, and exhibits favorable ADME properties. Y1693 improves ovariectomy-induced osteoporosis in mice and reverses ligation-induced periodontal alveolar bone loss. Y1693 is applicable to research related to osteoporosis and periodontal diseases.
    Y1693
  • HY-P10118A
    Cathepsin L-IN-3 TFA
    		Inhibitor 98.18%
    Cathepsin L-IN-3 (Compound cat L inh. 7) TFA is selective a noncovalent cathepsin L inhibitor with a Ki of 4.3 nM.
    Cathepsin L-IN-3 TFA
  • HY-158763A
    MPI8 TFA
    		Inhibitor
    MPI8 (TG0205221) TFA is an inhibitor of the major protease of SARS-CoV-2 (MPro) with high antiviral activity. MPI8 TFA exerts its antiviral effect by dual and selective inhibition of SARS-CoV-2 MPro and host cell cysteine protease L (cathepsin L). MPI8 TFA can be used in clinical studies of COVID-19.
    MPI8 TFA
  • HY-P1645
    Papain
    Papain is a cysteine protease of the peptidase C1 family. Papain enhances red cell agglutination by anti-D and anti-A, and increases red cell sensitivity to K cell-mediated lysis in ADCC assays. Papain can induce pulmonary emphysema. Papain can be used for the researches of Rh haemolytic disease of the newborn and pulmonary emphysema.
    Papain
  • HY-15282
    E-64
    		Inhibitor 99.96%
    E-64 (Proteinase inhibitor E 64) is a potent irreversible inhibitor against general cysteine proteases with IC50 of 9 nM for papain.
    E-64
  • HY-100350
    CA-074 methyl ester
    		Inhibitor 99.34%
    CA-074 methyl ester is a specific inhibitor of Cathepsin B, which has potent bioactivities such as neuroprotective, anti-cancer, and anti-inflamatory effects.
    CA-074 methyl ester
  • HY-100223
    Calpeptin
    		Inhibitor 99.17%
    Calpeptin is a potent, cell penetrating calpain inhibitor, with an ID50 of 40 nM for Calpain I in human platelets. Calpeptin is also an inhibitor of cathepsin K.
    Calpeptin
  • HY-103350
    CA-074
    		Inhibitor 99.94%
    CA-074 is a potent inhibitor of cathepsin B with a Ki of 2 to 5 nM.
    CA-074
  • HY-W010347
    L-Homocysteine
    		Activator 98.0%
    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.
    L-Homocysteine
  • HY-15533
    LY 3000328
    		Inhibitor 99.50%
    LY 3000328 (Z-FL-COCHO) is a potent and selective Cathepsin S (Cat S) inhibitor with IC50s of 7.7 and 1.67 nM for hCat S and mCat S, respectively.
    LY 3000328
  • HY-16594
    Lactacystin
    		Inhibitor 98.24%
    Lactacystin is a potent, orally active, irreversible, cell-permeable, selective 20S proteasome inhibitor (IC50 = 4.8 μM). Lactacystin also inhibits the lysosomal enzyme cathepsin A. Lactacystin inhibits cell growth and induces apoptosisand cell cycle arrest, and has antiviral and antioxidative activity. Lactacystin induces neurite outgrowth and hypertension. Lactacystin has the potential for the research of cancer, Neurological Disease, hypertension and Malaria, and so on[2] [6] .
    Lactacystin
  • HY-128140
    Z-FY-CHO
    		Inhibitor
    Z-FY-CHO (Z-Phe-Tyr-CHO) is a potent and specific cathepsin L (CTSL) inhibitor.
    Z-FY-CHO
  • HY-W011063
    Gly-Phe-β-naphthylamide
    		99.92%
    Gly-Phe-β-naphthylamide is a substrate of Cathepsin C (HY-P2922) and belongs to the lysosomal agonist. Gly-Phe-β-naphthylamide can freely pass through the cell membrane and organelle membrane. Gly-Phe-β-naphthylamide will be specifically hydrolyzed by Cathepsin C, ultimately leading to a permeability lysis when it enters the acidic compartment. Gly-Phe-β-naphthylamide can be used to study lysosomal hydrolysis, lysosomal membrane permeability, and the function of cathepsin C.
    Gly-Phe-β-naphthylamide
  • HY-10042
    Odanacatib
    		Inhibitor 99.80%
    Odanacatib (MK-0822) is a potent and selective inhibitor of cathepsin K, with an IC50 of 0.2 nM for human cathepsin K.
    Odanacatib
  • HY-134434
    Z-Arg-Arg-AMC hydrochloride
    		Substrate 99.83%
    Z-Arg-Arg-AMC hydrochloride is a highly selective fluorescent Cathepsin B substrate. Z-Arg-Arg-AMC hydrochloride can be hydrolyzed by Cathepsin B to produce a fluorescent product for enzyme activity detection.
    Z-Arg-Arg-AMC hydrochloride
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
Cathepsin Isoform Comparison

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