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-18234A
    Leupeptin hemisulfate
    		Inhibitor ≥98.0%
    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-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-100229
    Aloxistatin
    		Inhibitor 99.55%
    Aloxistatin (E64d) is a cell-permeable and irreversible broad-spectrum cysteine protease inhibitor. Aloxistatin (E64d) exhibits entry-blocking effect for MERS-CoV.
    Aloxistatin
  • HY-B0496
    PMSF
    		Inhibitor 99.91%
    PMSF is an irreversible serine/cysteine protease inhibitor commonly used in the preparation of cell lysates.
    PMSF
  • HY-P1645
    Papain
    Papain is a cysteine protease of the peptidase C1 family, which is used in food, pharmaceutical, textile, and cosmetic industries.
    Papain
  • HY-P2780A
    Cathepsin B, Human Liver
    Cathepsin B, Human Liver is a cysteine protease in liver and is involved in multiple kinds of programmed cell death (including apoptosis, pyroptosis, ferroptosis, necroptosis, and autophagic cell death). Cathepsin B (CTSB) have been implicated in various ECM-related disorders, such as dilated cardiomyopathy, lung fibrosis, proteinuric renal disorders, cancer, and osteoporosis.
    Cathepsin B, Human Liver
  • 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-168591
    CTSC-IN-1
    		Inhibitor
    CTSC-IN-1 (B22) is a CTSC inhibitor. CTSC-IN-1 inhibits CTSC activity by binding to S2 pocket and S1 site. CTSC-IN-1 can be used in the study inflammatory bowel disease.
    CTSC-IN-1
  • HY-148905
    p-Aminophenylmercuric acetate
    		Activator 99.07%
    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-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 99.62%
    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 ≥98.0%
    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 99.88%
    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 98.00%
    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-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-10042
    Odanacatib
    		Inhibitor 99.82%
    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-103353
    SID 26681509
    		Inhibitor 98.70%
    SID 26681509 is a potent, reversible, competitive, and selective inhibitor of human cathepsin L with an IC50 of 56 nM. SID 26681509 inhibits in vitro propagation of malaria parasite Plasmodium falciparum and inhibits Leishmania major with IC50s of 15.4 μM and 12.5 μM, respectively. SID 26681509 shows no inhibitory activity against cathepsin G.
    SID 26681509
  • HY-119293
    K777
    		Inhibitor 99.77%
    K777 is a potent, orally active and irreversible cysteine protease inhibitor. K777 is also a potent CYP3A4 inhibitor with an IC50 of 60 nM and a selective CCR4 antagonist featuring the potent chemotaxis inhibition. K777 irreversibly inhibits Cruzain, the major cysteine protease of Trypansoma cruzi, and cathepsins B and L. K777 is a broad-spectrum antiviral by targeting cathepsin-mediated cell entry. K777 inhibits SARS-CoV and EBOV pseudovirus entry with IC50 values of 0.68 nM and 0.87 nM, respectively.
    K777
  • HY-100231
    Cathepsin inhibitor 1
    		Inhibitor 98.89%
    Cathepsin inhibitor 1 (Compound 25) is a potent and selective inhibitor of Cathepsin, with pIC50s of 7.9, 6.7, 6.0, 5.5 and 5.2 for CatL, CatL2, CatS, CatK, and CatB, respectively. Cathepsin inhibitor 1 is promising for research of osteoarthritis.
    Cathepsin inhibitor 1
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
Cathepsin Isoform Comparison

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