ATP site-targeting, highly potent and selective phosphatidylinositol 4-kinase type IIIα (PI4KA, PI4KIIIα) inhibitor.
GSK-A1 is an ATP site-targeting, highly potent and selective type III phosphatidylinositol 4-kinase PI4KA (PI4KIIIα) inhibitor (pIC50 = 8.5-9.8) that selectively downregulates cellular PtdIns(4)P, but not PtdIns(4,5)P2, level (HEK293 IC50 = 3 nM, complete depletion of HEK293 & COS-7 plasma membrane PtdIns(4)P by 100 nM post 10 min treatment) with much reduced potency toward PI4KB (pIC50 = 7.2-7.7), PI3KA/B/D/G (pIC50 = 7.3/7/7.1/7.8) or PI4K/2A/2B (pIC50 <5). GSK-A1 is a useful tool for probing PI4KA-dependent cellular processes and viral replication (typical culture treatment conc. range: 10-100 nM).
Antimicrobial agents and chemotherapy, 60(10), 6402-6406 (2016-08-03)
Encephalomyocarditis virus (EMCV), like hepatitis C virus (HCV), requires phosphatidylinositol 4-kinase IIIα (PI4KA) for genome replication. Here, we demonstrate that tyrphostin AG1478, a known epidermal growth factor receptor (EGFR) inhibitor, also inhibits PI4KA activity, both in vitro and in cells.
Journal of molecular biology, 430(18 Pt B), 3129-3142 (2018-07-22)
Phosphatidylinositol 4-kinase IIIα (PI4KIIIα) is the lipid kinase primarily responsible for generating the lipid phosphatidylinositol 4-phosphate (PI4P) at the plasma membrane, which acts as the substrate for generation of the signaling lipids PIP2 and PIP3. PI4KIIIα forms a large heterotrimeric
Proceedings of the National Academy of Sciences of the United States of America, 114(52), 13720-13725 (2017-12-13)
Plasma membrane (PM) phosphoinositides play essential roles in cell physiology, serving as both markers of membrane identity and signaling molecules central to the cell's interaction with its environment. The first step in PM phosphoinositide synthesis is the conversion of phosphatidylinositol
Positive-strand RNA [(+)RNA] viruses are true masters of reprogramming host lipid trafficking and synthesis to support virus genome replication. Via their membrane-associated 3A protein, picornaviruses of the genus Enterovirus (e.g., poliovirus, coxsackievirus, and rhinovirus) subvert Golgi complex-localized phosphatidylinositol 4-kinase IIIβ
Contact (Thousand Oaks (Ventura County, Calif.)), 7, 25152564241232196-25152564241232196 (2024-02-26)
The lipid phosphatidylinositol 4-phosphate (PI4P) plays a master regulatory role at Golgi membranes, orchestrating membrane budding, non-vesicular lipid transport and membrane organization. It follows that harmonious Golgi function requires strictly maintained PI4P homeostasis. One of the most abundant PI4P effector
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