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-162965
    Immunoproteasome activator 1
    		Activator
    Immunoproteasome activator 1 (compound A) is a selective immunoproteasome activator that increases the presentation of individual MHC-I–bound peptides by over 100-fold. Immunoproteasome activator 1 binds to the proteasome structural subunit PSMA1 and promotes the association of the proteasome activator PA28α/β (PSME1/PSME2) with immunoproteasomes.
    Immunoproteasome activator 1
  • HY-10227S
    Bortezomib-d8
    		Inhibitor ≥98.0%
    Bortezomib-d8 is the deuterium labeled Bortezomib. Bortezomib (PS-341) is a reversible and selective proteasome inhibitor, and potently inhibits 20S proteasome (Ki=0.6 nM) by targeting a threonine residue. Bortezomib disrupts the cell cycle, induces apoptosis, and inhibits NF-κB. Bortezomib is the first proteasome inhibitor anticancer agent. Anti-cancer activity.
    Bortezomib-d<sub>8</sub>
  • HY-164027
    MyoMed 205
    		Inhibitor 98.00%
    MyoMed-205 is an inhibitor targeting the activity of MuRF1. MyoMed-205 prevents early diaphragmatic systolic dysfunction and atrophy due to unilateral diaphragmatic nerve denervation 12 hours later. MyoMed-205 reduces ubiquitination and subsequent proteasomal degradation of muscle proteins by inhibiting MuRF1 activity. MyoMed-205 increases levels of a protein that phosphorylates Akt (ser473), an important signaling molecule for muscle growth and maintenance. MyoMed-205 can be used to study and treat diaphragmatic dysfunction and atrophy (DIDD) caused by early apraxia, especially in clinical situations such as diaphragmatic paralysis or mechanical ventilation.
    MyoMed 205
  • HY-W054146
    RAMB4
    		Inhibitor 98.02%
    RAMB4 is a ubiquitin-proteasome system (UPS)-stressor. RAMB4 inhibits ubiquitin-mediated protein degradation upstream of the 20S proteasomal catalytic activites. RAMB4 triggers a ubiquitin-proteasome-system (UPS)-stress response without affecting 20S proteasome catalytic activities. Anticancer activity.
    RAMB4
  • HY-109001A
    (1S,2R)-Alicapistat
    		Inhibitor ≥98.0%
    (1S,2R)-Alicapistat ((1S,2R)-ABT-957) is an orally active selective inhibitor of human calpains 1 and 2 for the potential application of Alzheimer's disease (AD). (1S,2R)-Alicapistat mitigates the metabolic liability of carbonyl reduction and inhibits calpain 1 with an IC50 value of 395 nM.
    (1S,2R)-Alicapistat
  • HY-150226
    Enzyme-IN-1
    		Inhibitor
    Enzyme-IN-1 (compound 1) is a peptide-based inhibitor of N-terminal nucleophile (Ntn) hydrolases. Specifically, Enzyme-IN-1 inhibits the chymotrypsin-like activity (CT-L) of the 20S proteasome. Enzyme-IN-1 may has potential antiinflammatory properties.
    Enzyme-IN-1
  • HY-108549
    clasto-Lactacystin β-lactone
    		Inhibitor ≥98.0%
    Clasto-Lactacystin β-lactone, a natural active metabolite of lactacystin, which is a metabolite of Streptomyces, acts as an irreversible 20S proteasome inhibitor.
    clasto-Lactacystin β-lactone
  • HY-16707
    CH 5450
    		Inhibitor 98.19%
    CH 5450 (Z-Ile-Glu-Pro-Phe-Ome) is a selective short peptide human cardiac chymase inhibitor. CH-5450 inhibits the action of rat MAB elastase 2 on substrate Ang I with an IC50 value of 49 µM and N-succinyl-Ala-Ala-Pro-Phe-p-nitroanilide with an IC50 value of 4.8 µM.
    CH 5450
  • HY-139331
    20S Proteasome-IN-1
    		Inhibitor 99.13%
    20S Proteasome-IN-1 is a 26S proteasome inhibitor extracted from patent WO2006128196A2 compound 2. 20S Proteasome-IN-1 has the potential for cancer, immune-related disorders, inflammation, ischemic conditions, neurodegenerative disorders and other diseases research.
    20S Proteasome-IN-1
  • HY-P10003B
    iso-VQA-ACC acetate
    		99.48%
    iso-VQA-ACC acetate is a substrate for constitutive proteasome.
    iso-VQA-ACC acetate
  • HY-B0914R
    10-Undecenoic acid (Standard)
    		Inhibitor
    10-Undecenoic acid (Standard) is the analytical standard of 10-Undecenoic acid. This product is intended for research and analytical applications. 10-Undecenoic acid (Undecylenic acid) is an antifungal agent. 10-Undecenoic acid inhibits Aβ oligomerization, scavenges ROS and inhibits μ-calpain activity. 10-Undecenoic acid has neuroprotective effects. 10-Undecenoic acid has anticancer effects on a variety of tumors. 10-Undecenoic acid inhibits C. albicans biofilm formation and MRSA infection. 10-Undecenoic acid inhibits quorum sensing signals of Bacillus subtilis and Pseudomonas aeruginosa.
    10-Undecenoic acid (Standard)
  • HY-112908
    RTS-V5
    		Inhibitor
    RTS-V5 is a dual HDAC/proteasome inhibitor with IC50s of 6.9, 18, 15, 0.27, 0.53 μM for HDAC1, HDAC2, HDAC3, HDAC6, HDAC8, respectively.
    RTS-V5
  • HY-150590
    20S Proteasome-IN-2
    		Inhibitor
    20S Proteasome-IN-2 is a human 20S proteasome inhibitor. 20S Proteasome-IN-2 shows high selectivity to its β5 subunit with the IC50 of 0.18 μM. 20S Proteasome-IN-2 displays anti-proliferative effect in vitro and in vivo, and arrests cell cycle at G2/M.
    20S Proteasome-IN-2
  • HY-162885
    YSY01A
    		Inhibitor
    YSY01A is a proteasome inhibitor that can suppress cancer cell survival by inducing apoptosis (Apoptosis). Its IC50 values are 51.0 nM for HEK293T, 9.2 nM for A549, 5.2 nM for MCF-7, 8.9 nM for MGC-803, and 35.4 nM for PC-3M cells. Additionally, YSY01A eliminates constitutive STAT3 signaling by downregulating gp130 and JAK2 in human A549 lung cancer cells. YSY01A holds promise for research in the field of cancer therapy.
    YSY01A
  • HY-P4910
    Baceridin
    		Inhibitor
    Baceridin is a proteasome inhibitor and a cyclic hexapeptide. Baceridin can be isolated from the culture medium of Epiphytic Bacillus. Baceridin can inhibit cell cycle progression and induce tumor cell apoptosis through a p53-independent pathway. Baceridin can be used in cancer research.
    Baceridin
  • HY-P4580
    Suc-Ala-Ala-Pro-Phe-SBzl
    Suc-Ala-Ala-Pro-Phe-SBzl can be used as the substrate of rat intestinal mast cell protease (RMCP I), rat skeletal muscle mast cell protease (RMCP II) and Chymotrypsin (HY-108910). Suc-Ala-Ala-Pro-Phe-SBzl can be hydrolyzed by glycine (R208G).
    Suc-Ala-Ala-Pro-Phe-SBzl
  • HY-N11620
    Sadopeptins A
    		Inhibitor
    Sadopeptins A is a nature product that could be isolated from Streptomyces sp. Sadopeptins A is a potent proteasome inhibitor.
    Sadopeptins A
  • HY-P3414
    Proteasome-activating peptide 1
    		Activator
    Proteasome-activating peptide 1 is a peptide, which increases the chymotrypsin-like proteasomal catalytic activity and, consequently, proteolytic rates both in vitro and in culture. Proteasome-activating peptide 1 prevents protein aggregation in a cellular model of amyotrophic lateral sclerosis.
    Proteasome-activating peptide 1
  • HY-158197
    RC-106
    		Inhibitor
    RC-106 is a proteasome inhibitor (IC50: 35 μM) and Sigma receptor modulator with anticancer activity. RC-106 has antiproliferative activity against cancer cells including glioblastoma (GB) and multiple myeloma (MM).
    RC-106
  • HY-142920
    LMP7-IN-1
    		Inhibitor
    LMP7-IN-1, a Boronic acid derivative, is a potent and selective immunoproteasome subunit LMP7 (β5i) inhibitor with an IC50 of 1.83 nM (WO2021143923A1; compound 20).
    LMP7-IN-1
Cat. No. Product Name / Synonyms Application Reactivity