membrane protein inhibitor

HNMPA is a membrane impermeable inhibitor of insulin receptor tyrosine kinase. HNMPA inhibits tyrosine and serine autophosphorylation by the human insulin receptor. HNMPA exhibits no effect on cyclic AMP-dependent protein kinase or protein kinase C activities.

Glutathione arsenoxide hydrochloride (Glutathione arsenoxide hydrochloride(1271726-51-2 Free base)) is a potentially active anti-cancer molecule and inhibitor of tumour metabolism. glutathione arsenoxide hydrochloride targets the mitochondrial inner membrane adenine nucleotidyl transferase (ANT), which inhibits cell proliferation and promotes apoptosis. Glutathione arsenoxide hydrochloride can be used to recognize cell surface proteins such as protein disulfide isomerases.

Dodecylphosphocholine (DPC) is a substrate-type inhibitor of pancreas phospholipase A2. Dodecylphosphocholine is a detergent.

C-215 is a novel inhibitor of mycobacterial membrane protein large 3 (MmpL3).

NCGC00262650 is an inhibitor of AMA1-RON2 interaction and c-Src tyrosine kinase activity.

BRCA1-IN-2 is a cell membrane-crossing BRCA1 protein-protein interaction (PPI) inhibitor with antitumor activity that acts by disrupting the interaction of BRCA1 (BRCT)2 with proteins.

BHPI is a potent ERα inhibitor that blocks nuclear estrogen–ERα-regulated gene expression effectively. It triggers sustained ERα-dependent activation of the endoplasmic reticulum (EnR) stress sensor, notably the unfolded protein response (UPR), and consistently inhibits protein synthesis. With an IC50 value targeting ERα, BHPI's mechanism involves the rapid hyperactivation of PLCγ on the plasma membrane in ERα(+) cancer cells, which produces inositol 1,4,5-triphosphate (IP3). This, in turn, opens EnR IP3R calcium channels, leading to a rapid depletion of EnR Ca(2+) stores. SIGNIFICANTLY, BHPI alters estrogen-ERα's usual effect of causing mild and transient UPR activation by inducing a severe and prolonged UPR activation, transforming the UPR from a protective to a toxic response.

K-252b, an indolocarbazole derived from the actinomycete Nocardiopsis, functions as a protein kinase C (PKC) inhibitor. It is effective in inhibiting extracellular kinases in cultured cells due to its inability to freely cross the cell membrane.

TC13172 is a potent and covalent inhibitor that specifically targets the mixed lineage kinase domain-like protein (MLKL), exhibiting significant selectivity for MLKL over the closely related receptor-interacting serine/threonine kinase 1 (RIPK1) and RIPK3 at a concentration of 10 µM.TC13172 effectively inhibits necroptosis induced by the TSZ combination (TNF-α, a Smac mimetic, and Z-VAD-FMK) in HT-29 cells with a EC50 of 2 nM and, at 100 nM, blocks TSZ-induced oligomerization and plasma membrane translocation of MLKL.

JNJ-9676 is an orally active inhibitor of the coronavirus membrane protein, which binds to the membrane protein dimer's transmembrane domain-formed binding pocket, thereby blocking viral assembly and release. It exhibits nanomolar-level antiviral activity against the novel coronavirus and SARS-CoV.

Paeoniflorin-6′-O-benzene sulfonate (CP-25) acts as an inhibitor of G protein-coupled receptor kinase 2 (GRK2), preventing its translocation to the cell membrane and inhibiting the JAK1/STAT3 signaling pathway. It suppresses HaCaT cell proliferation induced by IL-17A/CXCL2. In mouse models, CP-25 reduces the levels of inflammatory cytokines and chemokines such as IL-17A, IL-17F, IFN-γ, TNF-α, IL-22, IL-23, CXCL2, CXCL3, and CXCL9, thereby alleviating psoriasis induced by Imiquimod.

CIM-834 is an orally active, selective inhibitor that targets the coronavirus membrane protein (M protein), exhibiting potent inhibition of viral assembly in both SARS-CoV-2 and SARS-CoV. It binds non-covalently to the short form of the M protein (Mshort), stabilizing it and preventing its conformational change to the long form (Mlong) necessary for virion assembly, thus blocking virus particle formation. CIM-834 holds potential for research in COVID-19 and other coronavirus infections.

Spirovirimat (Compound 7) is a potent inhibitor of the monkeypox virus (MPXV) p37 protein, with an IC50 value of 35 nM. It obstructs the formation of extracellular viral particles by inhibiting the viral membrane envelopment process. Spirovirimat shows potential for studying monkeypox virus infections.

SLUPP-225 is an efflux pump inhibitor (EPI) by interacting with the membrane fusion protein AcrA, a critical component of the AcrAB-TolC efflux pump in Escherichia coli.

SLUPP-417 is an efflux pump inhibitor (EPI) by interacting with the membrane fusion protein AcrA, a critical component of the AcrAB-TolC efflux pump in Escherichia coli.

PtdIns-(3,4,5)-P3 (PIP3) serves as an anchor for the binding of signal transduction proteins bearing pleckstrin homology (PH) domains such as phosphatidylinositol 3-kinase (PI3K) or PTEN. Protein binding to PIP3 is important for cytoskeletal rearrangement and membrane trafficking and initiates an intricate signaling cascade that has been implicated in cancer. 3,5-dimethyl PIT-1 is a dimethyl analog of PIT-1, the selective inhibitor of PIP3/Akt PH domain binding, that is designed for more favorable solubility in vivo. 3,5-dimethyl PIT-1 inhibits PI3K/Akt signaling (IC50 = 27 μM), suppressing PI3K-PDK1-Akt-dependent phosphorylation, which has been shown to reduce cell viability and induce apoptosis in PTEN-deficient U87MG glioblastoma cells (IC50 = 36 μM). 4T1 breast cancer growth is significantly attenuated in BALB/c mice with a dose of 1 mg/kg of 3,5-dimethyl PIT-1 per day.

Phosphatidylserine is a naturally occurring phospholipid that comprises 2-10% of total phospholipids in mammals and is enriched in the central nervous system, particularly the retina. It is anionic and found mainly on the inner leaflet of the cell membrane. It is biosynthesized from phosphatidylcholine or phosphatidylethanolamine by phosphatidyl synthase 1 (PSS1) or PSS2, respectively, in the endoplasmic reticulum and can be reversibly converted back by the same enzymes. It can also be irreversibly converted to phosphatidylethanolamine by phosphatidylserine decarboxylase in the mitochondria. Phosphatidylserine binds to T cell immunoglobulin mucin type 1 (TIM-1) and TIM-4 receptors as well as brain-specific angiogenesis inhibitor 1 (BAI1), leading to anti-inflammatory and anti-atherosclerotic effects. It is also a cofactor involved in the activation of various signaling pathways through activation of protein kinase C, neutral sphingomyelinase, and c-Raf-1 protein kinase among others. Phosphatidylserine is externalized during apoptosis by scramblases in the plasma membrane as a signal for phagocytes to engulf the cell. Phosphatidylserines (bovine) is a mixture of bovine phosphatidylserines containing fatty acids with variable chain lengths at the sn-1 and sn-2 positions.

16F16 is a protein disulfide isomerase (PDI) inhibitor.1It inhibits PDI reductase activity in an enzyme assay when used at concentrations ranging from 1 to 100 μg/ml.116F16 reduces PC12 cell apoptosis induced by the misfolded huntingtin protein HTTQ103. It suppresses PDI-dependent mitochondrial outer membrane permeabilization (MOMP) in isolated PC12 cell mitochondria. 16F16 (2, 3, 4, and 10 μM) reduces HTTN90Q73mutant huntingtin-induced medium spinal neuron death and MOMP in rat corticostriatal slices. It also reduces pyramidal neuron death induced by amyloid-β precursor protein (APP) in rat corticostriatal slices. 1.Hoffstrom, B.G., Kaplan, A., Letso, R., et al.Inhibitors of protein disulfide isomerase suppress apoptosis induced by misfolded proteinsNat. Chem. Biol.6(12)900-906(2010)

A2ti-2 is a low affinity and selective inhibitor of the membrane-bound protein A2 S100A10 heterotetramer (A2t) (IC50 : 230 μM).A2ti-2 exhibits antiviral activity by selectively disrupting protein interactions between A2 and S100A10, and protects against human papillomavirus type 16 (HPV16) infection.

Rp-cAMPS sodium is a phosphorothioate analog of cAMP, a protein kinase A inhibitor and a membrane-permeable cAMP antagonist that inhibits cAMP-dependent protein kinases by blocking cAMP-induced conformational transitions, and can be used in the study of cardiovascular diseases.

Endosidin-2 is an exocyst inhibitor, a cell-permeable benzylidene benzoylhydrazine, that binds to the exocyst component of the 70 kDa (EXO70) subunit of the exocyst complex (Kd = 253 μM, EXO70A1).Endosidin-2 disrupts protein translocation between the endosomes and plasma membrane, thereby facilitating translocation of proteins to the vesicle for degradation. It also inhibits recirculation of endocytosed transferrin to the plasma membrane in HeLa cells and targets multiple isoforms of mammalian EXO70, leading to dysregulation of exocytosis.Endosidin2 can be used as a tool molecule to study cytosolization.

Sec61-IN-2 (A347) is a protein secretion inhibitor. This compound effectively interferes with the Sec61-mediated translocation mechanism, thereby inhibiting the movement of proteins across the endoplasmic reticulum membrane, which disrupts cellular functioning.

UK-5099 (PF-1005023) is a specific and potent inhibitor of MPC carrier activity, effectively inhibiting pyruvate-dependent oxygen consumption in rat heart mitochondria with an IC50 of 50 nM [1].

SSAO VAP-1 Inhibitor 1 is a potent compound aimed at inhibiting SSAO VAP-1, a protein involved in facilitating the translocation of Glucose Transport 4 (GLUT 4) to the cell membrane in adipocytes, thus playing a crucial role in glucose regulation. Additionally, in endothelial cells, this enzyme is responsible for mediating the adherence and infiltration of leukocytes, contributing to inflammatory responses. Given these mechanisms, SSAO VAP-1 Inhibitor 1 holds considerable potential for research into treatments for inflammation, inflammation-related conditions, diabetes, and diabetes-associated diseases[1].