2. Signaling Pathways
  3. Metabolic Enzyme/Protease
  4. Proteasome

Proteasome

Proteasome

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Proteasomes are very large protein complexes inside all eukaryotes and archaea, and in some bacteria. In eukaryotes, they are located in the nucleus and the cytoplasm. The main function of the proteasome is to degrade unneeded or damaged proteins by proteolysis, a chemical reaction that breaks peptide bonds. Enzymes that carry out such reactions are called proteases. Proteasomes are part of a major mechanism by which cells regulate the concentration of particular proteins and degrade misfolded proteins. The degradation process yields peptides of about seven to eight amino acids long, which can then be further degraded into amino acids and used in synthesizing new proteins. Proteins are tagged for degradation with a small protein called ubiquitin. The tagging reaction is catalyzed by enzymes called ubiquitin ligases. Once a protein is tagged with a single ubiquitin molecule, this is a signal to other ligases to attach additional ubiquitin molecules. The result is a polyubiquitin chain that is bound by the proteasome, allowing it to degrade the tagged protein.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-12743A
    K-7174 dihydrochloride
    		Inhibitor 98.19%
    K-7174 dihydrochloride is an orally active proteasome and GATA inhibitor. K-7174 dihydrochloride is a cell adhesion inhibitor. K-7174 dihydrochloride induces cell apoptosis. K-7174 dihydrochloride shows antitumor activities, it can be used for the research of cancer.
    K-7174 dihydrochloride
  • HY-10454
    Delanzomib
    		Inhibitor ≥98.0%
    Delanzomib (CEP-18770) is a potent and orally active chymotrypsin-like activity of the proteasome inhibitor with an IC50 of 3.8 nM. Delanzomib inhibits NF-κB activity, induces cancer cell apoptotic, and has strong antiangiogenic and anti-cancer activities.
    Delanzomib
  • HY-114419A
    Zetomipzomib maleate
    		Inhibitor 99.90%
    Zetomipzomib (KZR-616) maleate, a first-in-class immunoproteasome inhibitor, selectively targets the LMP7 (IC50: 39/57 nM=hLMP7/mLMP7) and LMP2 (IC50: 131/179 nM=hLMP2/mLMP2) subunits of the immunoproteasome. Zetomipzomib maleate has the potential for the research of multiple autoimmune diseases.
    Zetomipzomib maleate
  • HY-16594
    Lactacystin
    		Inhibitor 98.08%
    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[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] .
    Lactacystin
  • HY-100739
    RA190
    		Inhibitor 99.09%
    RA190, a bis-benzylidine piperidon, inhibits proteasome function by covalently binding to cysteine 88 of ubiquitin receptor RPN13.
    RA190
  • HY-19749
    PD 151746
    		Inhibitor
    PD151746 is a calpain inhibitor, shows a 20-fold selectivity for u-calpain (Ki = 0.
    PD 151746
  • HY-101786
    KZR-504
    		Inhibitor 99.12%
    KZR-504 is a highly selective inhibitor of immunoproteasome low molecular mass polypeptide 2 (LMP2), with IC50s of 51 nM, 4.274 μM for LMP2 and LMP7, respectively. KZR-504 is of interest for the treatment of autoimmune disease.
    KZR-504
  • HY-120722
    TCH-165
    		Modulator 99.32%
    TCH-165 is a small molecule modulator of proteasome assembly, which increases 20S levels and facilitates 20S-mediated protein degradation.
    TCH-165
  • HY-111790
    M3258
    		Inhibitor ≥98.0%
    M3258 is an orally bioavailable, potent, reversible and highly selective immunoproteasome subunit LMP7 (β5i) inhibitor. M3258 exerts high biochemical (IC50=3.6 nM) and cellular (IC50=3.4 nM) potency against the LMP7 subunit. M3258 shows strong antitumor efficacy in multiple myeloma xenograft models. M3258 leads to a significant and prolonged suppression of tumor LMP7 activity and ubiquitinated protein turnover and the induction of apoptosis in multiple myeloma cells.
    M3258
  • HY-N2306A
    Aclacinomycin A hydrochloride
    		Inhibitor
    Aclacinomycin A (Aclarubicin) hydrochloride is an orally active and potent anthracycline antitumor antibiotic. Aclacinomycin A hydrochloride is an inhibitor of topoisomerase I and II. Aclacinomycin A hydrochloride inhibits synthesis of nucleic acid, especially RNA. Aclacinomycin A hydrochloride might inhibit the 26S protease complex as well as the ubiquitin-ATP-dependent proteolysis.
    Aclacinomycin A hydrochloride
  • HY-113221
    Isovalerylcarnitine
    		Activator ≥99.0%
    Isovalerylcarnitine is a product of the catabolism of L-leucine. Isovalerylcarnitine is also a selective and reversible calpain activator that induces apoptosis.
    Isovalerylcarnitine
  • HY-151424
    Vimentin-IN-1
    		99.21%
    Vimentin-IN-1 is a FiVe1 derivative, an orally active and selective anticancer agent. FiVe1 binds type III intermediate filament protein vimentin (VIM), to induce hyperphosphorylation of Ser56, resulting selective disruption of mitosis and multinucleation in transformed VIM-expressing mesenchymal cancer cells. Vimentin-IN-1 shows better oral bioavailability and pharmacokinetic profiles than FiVe1.
    Vimentin-IN-1
  • HY-B0385
    Gabexate mesylate
    		Inhibitor 99.14%
    Gabexate mesylate (FOY) is is a competitive and non-antigenic synthetic inhibitor of trypsin-like serine proteinases. Gabexate mesylate inhibits human thrombin, urokinase, plasmin, and Factor Xa with Kis of 0.97, 1.3, 1.6, and 8.5 μM, respectively. Gabexate mesylate binds to human and bovine tryptase with Kis of 3.4 nM and 18 μM, respectively. Gabexate mesylate exerts an anticoagulant effect on the clotting activity of thrombin and has anti-inflammatory effect by viainhibition of NF-κB, proinflammatory cytokines, and nitric oxide. Gabexate mesylate is used for pancreatitis and disseminated intravascular coagulation.
    Gabexate mesylate
  • HY-108552
    MG-115
    		Inhibitor 98.69%
    MG-115 is a potent and reversible proteasome inhibitor, with Kis of 21 nM and 35 nM for 20S and 26S proteasome, respectively. MG-115 specifically inhibit the chymotrypsin-like activity of the proteasome, induces p53-dependent apoptosis.
    MG-115
  • HY-P3414A
    Proteasome-activating peptide 1 TFA
    		Activator 99.82%
    Proteasome-activating peptide 1 TFA is a peptide and a potent proteasome activator. Proteasome-activating peptide 1 TFA increases the chymotrypsin-like proteasomal catalytic activity and, consequently, proteolytic rates both in vitro and in culture. Proteasome-activating peptide 1 TFA prevents protein aggregation in a cellular model of amyotrophic lateral sclerosis.
    Proteasome-activating peptide 1 TFA
  • HY-18741
    VR23
    		Inhibitor 98.05%
    VR23 is a small molecule that potently inhibits the activities of trypsin-like proteasomes (IC50=1 nM), chymotrypsin-like proteasomes (IC50=50-100 nM), and caspase-like proteasomes (IC50=3 μM).
    VR23
  • HY-109001
    Alicapistat
    		Inhibitor ≥98.0%
    Alicapistat (ABT-957) is an orally active selective inhibitor of human calpains 1 and 2 for the potential application of Alzheimer's disease (AD). Alicapistat mitigates the metabolic liability of carbonyl reduction and inhibits calpain 1 with an IC50 value of 395 nM.
    Alicapistat
  • HY-150602
    20S Proteasome activator 1
    		Activator 99.83%
    20S Proteasome activator 1 is a potent 20S proteasome activator with EC200 values of 0.3 μM, 0.7 μM and 1.8 μM for trypsin-like site, chymotrypsin-like site and caspase-like site. 20S Proteasome activator 1 translates well in a cellular system, preventing the accumulation of the pathogenic A53T mutant of α-synuclein. 20S Proteasome activator 1 can be used for researching neurodegenerative diseases.
    20S Proteasome activator 1
  • HY-N7056
    4'-Hydroxychalcone
    		Inhibitor 99.66%
    4'-Hydroxychalcone is a chalcone isolated from licorice root, with hepatoprotective activity. 4'-Hydroxychalcone inhibits TNFα-induced NF-κB activation via proteasome inhibition. 4'-Hydroxychalcone induces a rapid potassium release from mitochondrial vesicles and causes deterioration of respiratory control and oxidative phosphorylation of isolated rat liver mitochondria.
    4'-Hydroxychalcone
  • HY-114170
    ML604440
    		Inhibitor ≥98.0%
    ML604440 is a specific and cell-permeable Proteasome β1i (LMP2) subunit inhibitor. ML604440 can be used in experimental colitis, EAE and autoimmune disease research. ML604440 shows synergistic effects and advantageous when combined with LMP7 inhibitor.
    ML604440
Cat. No. Product Name / Synonyms Application Reactivity