Enzyme Modulators

Dihydrocyclosporin A is an immunosuppressant, which is a cyclic undecapeptide derived from fungal metabolites, specifically from the soil fungus Tolypocladium inflatum. This compound functions through the inhibition of calcineurin, which is a crucial phosphatase involved in the activation of T-cells. By binding to the intracellular protein cyclophilin, Dihydrocyclosporin A forms a complex that inhibits calcineurin activity, subsequently blocking the transcription of interleukin-2 and other cytokines essential for T-cell proliferation.

Inhibitor of FLT3 kinase and acid sphingomyelinase

Cyclin-dependent kinase 8 (CDK8) and CDK19 inhibitor

Lifirafenib is a targeted anticancer therapy, which is a small molecule inhibitor sourced through pharmaceutical development processes. Its mode of action involves the selective inhibition of the RAF kinase family, including B-RAF, which plays a critical role in the MAPK/ERK signaling pathway. By targeting these kinases, Lifirafenib effectively disrupts the aberrant signaling that contributes to tumor growth and survival in certain cancers with mutations such as BRAF V600E.

TPPB is a small molecule inhibitor, which is synthetically derived for targeted biochemical studies. It functions by selectively modulating G-protein-coupled receptor (GPCR) signaling pathways through the inhibition of specific protein-protein interactions. This mode of action makes TPPB an insightful tool for dissecting the complex mechanisms by which G-proteins relay extracellular signals to intracellular responses.

Tegafur is an antineoplastic agent that is used for the treatment of gastric and colorectal cancers in combination with other medications. This drug is a prodrug of 5-fluorouracil and has anticancer properties by inhibiting thymidylate synthase during DNA synthesis. Additionally, Tegafur causes disruptions of RNA functions.

Tegafur is part of our Bio-X ™ Range. These products are aimed at life science researchers who need high quality ready-to-use products for assay development, screening or other R&D work. With a solubility datasheet and convenient vials, all of our Bio-X ™ products are in stock across our global warehouses for rapid delivery and ease of use.

Inhibitor of CKD1, CDK2, and CDK4 serine/threonine kinases

Selective and potent inhibitor of lysine acetyltransferases KAT6A and KAT6B with IC50 values in low nanomolar range. The compound is a reversible competitor of acetyl coenzyme A domain of KAT6A/B enzymes. It inhibits MYST-catalysed histone acetylation and was shown to arrest lymphoma progression in mice models. The compound opened the door to a new class of cancer therapeutics that could potentially direct the cancer cells in senescence or permanent dormancy.

Antagonist of Aurora A serine/threonine protein kinase; antineoplastic

Cyclosporine U is a cyclic polypeptide immunosuppressant, which is a derivative of the natural product Cyclosporine A, produced by the fermentation process involving the filamentous fungus *Tolypocladium inflatum*. It primarily acts by inhibiting the activity of calcineurin, a phosphatase enzyme, which in turn blocks the transcription of interleukin-2 and other cytokines. This mechanism suppresses the activation of T-lymphocytes, a crucial component in the immune response.

N-alpha-Benzoyl-L-argininamide is a synthetic compound that is used as an enzyme inhibitor. It binds to the active site of proteases, thereby inhibiting their activity. This drug has been shown to inhibit the activities of phosphodiesterase and phosphatase enzymes in vitro. N-alpha-Benzoyl-L-argininamide also inhibits the proteolytic degradation of hippuric acid and casein in vitro. The binding affinity for this drug is due to its structural similarity with substrates such as glutamate and rhizosphere exudates.

First generation PI 3-kinase inhibitor

Inhibitor of the histone methyltransferase SETD8 that supresses methylation of the K20 residue in histone 4. UNC 0379 treatment of human glioma reduced recruitment of 53BP1 protein to double strand breaks and sensitised cells to radiotherapy without altering cell cycle kinetics.

A potent and selective inhibitor of cell death-inducing kinase RIP2 (IC50 = 5 nM). Reduces release of pro-inflammatory cytokines. Inhibits production of TNF-α and IL-6 in intestinal explants from patients with Crohn's disease and ulcerative colitis.

Human epidermal growth factor receptor 2 (HER-2)/epidermal growth factor receptor-2 (ErbB-2), is a key receptor linked to metastasis in tumours. The oncogenic ErbB-2 receptor has intrinsic receptor tyrosine kinase (RTK) activity. The receptor is activated by ligand binding which induces receptor dimerization. These RTK complexes can activate mitogen-activated protein kinase (MAPK) and phosphoinositol 3'-kinase (PI3K)/Akt pathways. This peptide has been identified as a substrate for HER-2/ErbB-2 as it is phosphorylated upon receptor activation and therefore acts as a marker for receptor activation in kinases assays.

Aurora kinase inhibitor

Inhibitor of FGFR kinase

PI3K/mTOR kinase inhibitor; anti-neoplastic

A protein kinase G selective substrate for use in kinases assays, with a preference for PKG Ialpha over PKG II. PKG is a serine/threonine-specific protein kinase activated by cyclin guanosine monophosphate (cGMP). PKG is involved in several signalling pathways including: smooth muscle relaxation, platelet function, cell division, nucleic acid synthesis and sperm metabolism.

Inhibitor of myosin?II?specific ATPase which blocks the myosin heads in an actin-detached state, disrupts contractility of myosin-actin filaments and stabilizes super-relaxed state of muscle fibres. It inhibits skeletal muscle myosin, non-muscle myosin II and heart muscle myosin.

Ruxolitinib is a janus tyrosine kinase inhibitor active specifically on sub-types JAK1 and JAK2 with IC50 values in the nanomolar range. JAK1 and JAK2 are kinases involved in the regulation of hematopoiesis. Clinically applied to the treatment of intermediate and high-risk myelofibrosis, ruxolitinib is usually well tolerated by patients.

Phosphorylated EGFR peptide substrate.

Cell permeable peptide which is able to activate phosphoinositide 3- kinase, for which it binds with high affinity to the p85 subunit. 740 Y-P also has mitogenic activity as it is able to induce mitosis in muscle cells, and promotes cell survival in neurones. PI 3- kinase's are a family of enzymes involved in many cellular pathways including cell proliferation, growth, differentiation, survival, motility, and intracellular trafficking. PI 3 Kinases are therefore also involved in many cancers.

Inhibits Jak kinases; immunosuppressive; anti-inflammatory