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-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-P10922
    Cathepsin E substrate e
    Cathepsin E substrate e is a substrate of Cathepsin E. Cathepsin E substrate e was designed in such a way that due to the close proximity of a Mca-donor and a Dnp-acceptor, a near complete intramolecular quenching effect was achieved in its intact state. After the proteolytic cleavage of the hydrophobic motif of the peptide substrate, both Mca and Dnp would be further apart, resulting in bright fluorescence.
    Cathepsin E substrate e
  • HY-161596
    SmCB1-IN-1
    		Inhibitor
    SmCB1-IN-1 (Compound 2h) is an inhibitor for S. mansoni cathepsin B1 (SmCB1) with an Ki of 0.05 μM. SmCB1-IN-1 exhibits selectivity toward human off-target cathepsins (29% and 37% inhibition for CatB and CatL at 20 μM). SmCB1-IN-1 inhibits 68% Schistosoma mansoni at 1 μM.
    SmCB1-IN-1
  • HY-RS03337
    CTSK Human Pre-designed siRNA Set A
    		Inhibitor

    CTSK Human Pre-designed siRNA Set A contains three designed siRNAs for CTSK gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control.
    CTSK Human Pre-designed siRNA Set A
    CTSK Human Pre-designed siRNA Set A
  • HY-155667
    Z-Nle-Lys-Arg-AMC
    Z-Nle-Lys-Arg-AMC is a fluorogenic peptide substrate that specifically monitors cathepsin B activity over a broad pH range.
    Z-Nle-Lys-Arg-AMC
  • HY-172242
    Verducatib
    		Inhibitor
    Verducatib is a cathepsin inhibitor.
    Verducatib
  • HY-161244
    FGA145
    		Inhibitor
    FGA145 is a dual, selective inhibitor for Mpro and human Cathepsin L, with Kis of 3.71 μM, 9.82 μM and 53 nM, for Mal-Mpro, pET21-Mpro and Cathepsin L, respectively. FGA145 reveals a multitarget effects in the antiviral activity.
    FGA145
  • HY-155611
    Cathepsin C-IN-6
    		Inhibitor
    Cathepsin C-IN-6 (compound 2) is a E-64c-hydrazideas based inhibitor of cathepsin C with anti-inflammatory activity. Cathepsin C-IN-6 inhibts activation of neutrophil elastase，exhibits potential efficacy in inflammatory diseases with high neutrophil load (e.g.，chronic obstructive pulmonary disease).
    Cathepsin C-IN-6
  • HY-P4404
    Abz-GIVRAK(Dnp)
    Abz-GIVRAK(Dnp) is the most efficient substrate for cathepsin B and is highly selective for this enzyme among lysosomal cysteine proteases. After Abz-GIVRAK(Dnp) is hydrolyzed, aminoacylbenziminosulfosuccinic acid (Abz-SAS) is released, and dinitrobenzoyl (Dnp) is also released. The product of this hydrolysis reaction, Abz-SAS, is fluorescent under ultraviolet light and can emit a fluorescent signal.
    Abz-GIVRAK(Dnp)
  • HY-120288
    AM4299B
    		Inhibitor
    AM4299B is an inhibitor for thiol protease. AM4299B inhibits bovine spleen cathepsin B, human kidney cathepsin L and papain with IC50s of 0.7, 0.5 and 20 μM, respectively. AM4299B can be used in research in osteoporosis, and has potential to be used as an antiparasitic agent.
    AM4299B
  • HY-P5999
    Z-FG-NHO-Bz
    		Inhibitor
    Z-FG-NHO-Bz is a selective cathepsin inhibitor.
    Z-FG-NHO-Bz
  • HY-100701
    Dutacatib
    		Inhibitor
    Dutacatib is inhibitor for SARS-CoV-2 3CLpro and cathepsin K, which exhibits antiviral activity and ameliorates the cancer-induced bone diseases.
    Dutacatib
  • HY-139111
    Oxocarbazate
    		Inhibitor
    Oxocarbazate is an inhibitor of human cathepsin L with the IC50 values of 6.9 nM (human Cathepsin L,0 h) 0.4 nM ((human Cathepsin L,4 h) and 5.07 μM (human cathepsin B), respectively. Oxocarbazate blockes both SARS-CoV (IC50 = 273 nM) and Ebola virus (IC50 = 193 nM) entry into 293T cells.
    Oxocarbazate
  • HY-118959
    S2160
    S2160 is a substrate of Cathepsin B that can be utilized in the calorimetric assay for the measurement of cathepsin B.
    S2160
  • HY-124202
    SQ 32602
    		Inhibitor
    SQ 32602 is an inhibitor of cathepsin E, with the IC50 of 88 nM.
    SQ 32602
  • HY-169171
    Cathepsin L-IN-5
    		Inhibitor
    Cathepsin L-IN-5 (D6-3) is a potent Cathepsin L (CatL) inhibitor with an IC50 of 0.27 nM. Cathepsin L-IN-5 effectively blocks the CatL function and substantially hinders the entry of the SARS-CoV-2 pseudovirus to cells by inhibiting the cleavage of the spike protein. Cathepsin L-IN-5 can be utilized in SARS-CoV-2 research.
    Cathepsin L-IN-5
  • HY-15099
    NC 2300
    		Inhibitor
    NC 2300 (VEL-0230)is a selective and orally active cysteine cathepsin inhibitor with the IC50 values of 284, 34.5, and 186 nM for cathepsin B, K, and S, respectively.NC 2300 can be used for study of diseases involving bone mineral disorders.
    NC 2300
  • HY-164958
    TB-11
    		Inhibitor
    TB-11 is a Cathepsin D inhibitor, with IC50s of 0.126 nM (Cathepsin D), 1.92 nM (Cathepsin E), 48.8 nM (BACE1), respectively. TB-11 can be used for tumor research.
    TB-11
  • HY-129461
    Dibenzyl trisulfide
    		Inducer
    Dibenzyl trisulfide (DTS) is an active ingredient that can be isolated from Petiveria alliacea L.. Dibenzyl trisulfide inhibits cell proliferation and migration. Dibenzyl trisulfide decreased the mRNA and protein expression of BAK-1 and LTA. Dibenzyl trisulfide induces lysosomal membrane permeabilization and cathepsin B release.
    Dibenzyl trisulfide
  • HY-163029
    CTSL/B-IN-1
    		Inhibitor
    CTSLCTSB-IN-1 (compound 212-148) is a bispecific inhibitor of host viral spike cleaver proteins CTSL/CTSB and TMPRSS2 with IC50s of 2.13/64.07 nM and 1.38 μM, respectively. CTSLCTSB-IN-1 blocks two relevant SARS-CoV-2 viral entry pathways by inhibiting the viral spike cleavage and can be applied to anti-SARS-CoV-2 research.
    CTSL/B-IN-1
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity
Cathepsin Isoform Comparison

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