2. Signaling Pathways
  3. Metabolic Enzyme/Protease
  4. Ser/Thr Protease

Ser/Thr Protease

Serine proteases; Serine endopeptidases; Threonine proteases

Ser/Thr Protease

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Serine (Ser) proteases catalyse the hydrolysis of specific peptide bonds in their substrates and this activity depends on a set of amino acids in the active site of the enzyme, one of which is always a serine. There are two families especially well studied, the trypsin family and the subtilisin family. Serine proteases play crucial roles in a wide variety of cellular as well as extracellular functions, including the process of blood clotting, protein digestion, cell signaling, inflammation, and protein processing. Threonine (Thr) proteases are a family of proteolytic enzymes harbouring a threonine residue within the active site. The prototype members of this class of enzymes are the catalytic subunits of the proteasome, however the acyltransferases convergently evolved the same active site geometry and mechanism.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-143866
    Kallikrein-IN-1
    		Inhibitor
    Kallikrein-IN-1 (Formula A) is a Kallikrein inhibitor.
    Kallikrein-IN-1
  • HY-P4243
    Dansyl-Glu-Gly-Arg-Chloromethylketone
    		Inhibitor
    Dansyl-Glu-Gly-Arg-Chloromethylketone is a protease inhibitor, and inhibits serine/threonine proteases. Dansyl-Glu-Gly-Arg-Chloromethylketone inhibits activated porcine factor IX.
    Dansyl-Glu-Gly-Arg-Chloromethylketone
  • HY-147167
    Bz-D-Arg-pNA hydrochloride
    		Inhibitor
    Bz-D-Arg-pNA hydrochloride is a competitive trypsin inhibitor.
    Bz-D-Arg-pNA hydrochloride
  • HY-P4458
    Boc-QAR-pNA
    Boc-QAR-pNA is a chromogenic substrate of trypsin. Boc-QAR-pNA can be used to test trypsin activity.
    Boc-QAR-pNA
  • HY-114584
    A-953227
    A-953227 is a highly potent and selective inhibitor with the activity of inhibiting calcium-dependent esterase (calpain). A-953227 has enhanced selectivity for related cysteine proteases (cathepsins) and has shown good efficacy in cell experiments. A-953227 has shown broad efficacy in preclinical models for Alzheimer's disease, suggesting that it has potential benefits in inhibiting Alzheimer's disease.
    A-953227
  • HY-114330
    ZK824859
    		Inhibitor
    ZK824859 is an oral available and selective urokinase plasminogen activator (uPA) inhibitor with IC50s of 79 nM, 1580 nM and 1330 nM for human uPA, tPA, and plasmin, respectively.
    ZK824859
  • HY-P4518
    Z-Val-Gly-Arg-pNA
    Z-Val-Gly-Arg-pNA is a chromogenic substrate for urokinase. Z-Val-Gly-Arg-pNA can be used for determination of urokinase activity.
    Z-Val-Gly-Arg-pNA
  • HY-E70568
    O-GlyCORTAR protease
    O-GlyCORTAR protease is recombinantly expressed from E.coli and contains a His tag. O-GlyCORTAR protease is an O-glycan-dependent protease that digests proteins carrying mucin-type O-glycans, including sialylated substrates, glycosylated Ser and Thr residues at the N terminus. O-GlyCORTAR protease digests a variety of O-glycan structures, including sialylated glycosylated core 1 and core 2 structures and Tn antigen. O-GlyCORTAR protease does not digest terminally modified serine or threonine residues, nor does it digest N-glycosylation sites on glycoproteins.
    O-GlyCORTAR protease
  • HY-P4335
    Bz-RGFFP-4MβNA
    Bz-RGFFP-4MβNA, a substrate for Cathepsin D, is suitable for either colorimetric or fluorometric assay.
    Bz-RGFFP-4MβNA
  • HY-147393
    Factor VII-IN-1
    		Inhibitor
    Factor VII-IN-1 (example 43) is a potent inhibitor of factor VII (FVII), with an IC50 of 1.1 μM. Factor VII-IN-1 shows anticoagulant properties.
    Factor VII-IN-1
  • HY-W707562
    FOY 251-d4
    FOY 251-d4 is the deuterium labeled FOY 251 (HY-19727A). FOY 251, an anti-proteolytic active metabolite Camostate (HY-13512), acts as a proteinase inhibitor. FOY 251 inhibits SARS-CoV-2 infection in cells assay.
    FOY 251-d<sub>4</sub>
  • HY-P991312
    CM-338
    		Inhibitor
    CM-338 is a human monoclonal antibody (mAb) targeting MASP2. CM-338 can be used in IgA nephropathy research.
    CM-338
  • HY-P5378
    Ac-KQKLR-AMC
    Ac-KQKLR-AMC (Cathepsin S substrate) is a biological active peptide. (Cathepsins are a class of globular lysosomal proteases, playing a vital role in mammalian cellular turnover. They degrade polypeptides and are distinguished by their substrate specificities. Cathepsin S is a cysteine proteinase involved in the pathogenesis of autoimmune diseases, atherosclerosis, cancer, obesity and related diseases.This peptide is a cathepsin S substrate fluorescently labeled with AMC (Ex/Em=354 nm/442 nm). It can be used to measure cathepsin S activity.)
    Ac-KQKLR-AMC
  • HY-12514
    NK3201
    		Inhibitor
    NK3201 is an orally active chymase inhibitor (IC50: 2.5, 1.2, and 28 nM for human, dog and hamster chymase). NK3201 inhibits Bleomycin (HY-17565)-induced pulmonary fibrosis. NK3201 inhibits vascular proliferation in grafted vein.
    NK3201
  • HY-18234B
    Leupeptin Ac-LL
    		Inhibitor
    Leupeptin Ac-LL is a protease inhibitor from actinomycetes. Leupeptin Ac-LL has antiplasmin activity.
    Leupeptin Ac-LL
  • HY-155303
    DCLK1-IN-2
    		Inhibitor
    DCLK1-IN-2 (compound I-5) is a potent DCLK1 inhibitor with an IC50 of 171.3  nM. DCLK1-IN-2 shows remarkable antiproliferative effects on SW1990 cell lines (IC50 of 0.6 μM) and in vivo antitumor potency.
    DCLK1-IN-2
  • HY-P3947
    Fluorescent Substrate for Subtillsin
    Fluorescent Substrate for Subtillsin can be used to detect the enzyme activity of subtillsin. Subtilisin is a bacterial serine protease.
    Fluorescent Substrate for Subtillsin
  • HY-151611
    UAMC-00050
    		Inhibitor
    UAMC-00050 is a potent trypsin-like serine protease inhibitor. UAMC-00050 can be used in research of dry eye syndrome and ocular inflammation.
    UAMC-00050
  • HY-P1873
    Phosphorylase Kinase β-Subunit Fragment (420-436)
    Phosphorylase Kinase β-Subunit Fragment (420-436) is the β-Subunit fragment (peptide 430-436) of phosphorylase kinase. Phosphorylase kinase is a serine/threonine-specific protein kinase which activates glycogen phosphorylase to release glucose-1-phosphate from glycogen.
    Phosphorylase Kinase β-Subunit Fragment (420-436)
  • HY-105999A
    APC 366 hydrochloride
    		Inhibitor
    APC 366 hydrochloride is a selective inhibitor of mast cell trypsin activity. APC 366 hydrochloride is able to inhibit trypsin-induced histamine release in human tonsil and lung cells. APC 366 hydrochloride may have important applications in regulating allergic reactions and inflammation.
    APC 366 hydrochloride
Cat. No. Product Name / Synonyms Application Reactivity