1. Signaling Pathways
  2. Metabolic Enzyme/Protease
  3. Cathepsin

Cathepsin

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.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-D1634
    Bz-FVR-AMC
    99.83%
    Bz-FVR-AMC is a fluorogenic substrate for procathepsin with a kcat/Km value of 1070 mM-1s-1. The high concentration of BZ-FVR-AMC inhibits the substrate.
    Bz-FVR-AMC
  • HY-112318
    GSK-2793660 free base
    Inhibitor
    GSK-2793660 (free base) is an oral, irreversible inhibitor of Cathepsin C (CTSC). GSK-2793660 (free base) can be used for the research of bronchiectasis.
    GSK-2793660 free base
  • HY-P1759
    N-CBZ-Phe-Arg-AMC
    99.88%
    N-CBZ-Phe-Arg-AMC (Z-FR-AMC) is a cathepsin substrate used in assessment activity of lysosomal cathepsin enzymes.
    N-CBZ-Phe-Arg-AMC
  • HY-103353A
    SID 26681509 quarterhydrate
    Inhibitor
    SID 26681509 quarterhydrate is a potent, reversible, competitive, and selective inhibitor of human cathepsin L with an IC50 of 56 nM. SID 26681509 quarterhydrate 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 quarterhydrate shows no inhibitory activity against cathepsin G.
    SID 26681509 quarterhydrate
  • HY-100227
    E 64c
    Inhibitor 99.73%
    E 64c is a derivative of naturally occurring epoxide inhibitor of cysteine proteases, a Calcium-activated neutral protease (CANP) inhibitor and a very weak irreversible cathepsin C inhibitor. E 64c exhibits entry-blocking effect for MERS-CoV.
    E 64c
  • HY-P4340
    Arg-Arg-AMC
    Arg-Arg-AMC is a highly selective substrate of Cathepsin B. Arg-Arg-AMC can be used to cathepsin B activity assay in cancer cells, while cathepsin B is assocaited with cell invasive and metastatic phenotype in numerous types of cancer.
    Arg-Arg-AMC
  • HY-P4515
    Z-Phe-Arg-pNA
    99.95%
    Z-Phe-Arg-pNA is a substrate of Cathepsin L.
    Z-Phe-Arg-pNA
  • HY-N10109A
    Gallinamide A TFA
    Inhibitor 99.85%
    Gallinamide A TFA is a linearly depositing peptide and a potent inhibitor of cathepsin L (CatL) (IC50: 17.6 pM). Gallinamide A TFA inhibits SARS-CoV-2 infection by inhibiting CatL (EC50: 28 nM). Gallinamide A TFA also inhibits Plasmodium falciparum (IC50: 50 nM).
    Gallinamide A TFA
  • 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-144636
    Atg4B-IN-2
    Inhibitor 98.03%
    Atg4B-IN-2 is a potent competitive Atg4B inhibitor with Ki value of 3.1 μM, also possesses declining PLA2 inhibitory potency, IC50s of 11 μM and 3.5 μM for Atg4B and PLA2, respectively. Atg4B-IN-2 enhances the anticancer activity of anti-castration-resistant prostate cancer agents via autophagy inhibition.
    Atg4B-IN-2
  • HY-141867
    Z-FF-FMK
    Inhibitor 98.71%
    Z-FF-FMK is a selective cathepsin-L inhibitor. Z-FF-FMK can prevent β-amyloid to induce apoptotic changes such as activation of caspase-3, cleavage of the DNA repair enzyme, poly-ADP ribose polymerase, and DNA fragmentation.
    Z-FF-FMK
  • HY-P4340A
    Arg-Arg-AMC acetate
    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-W790014
    Z-FG-NHO-BzOME
    Inhibitor 98.14%
    Z-FG-NHO-BzOME is a cysteine protease inhibitor that selectively inhibits cathepsin B, cathepsin L, cathepsin S, and papain.
    Z-FG-NHO-BzOME
  • 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
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity

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