Vacuolar protein sorting 34 (VPS34), also known as phosphatidylinositol 3-kinase catalytic subunit type 3 (PIK3C3), is encoded by the gene mapped to human chromosome 18q12.3. The encoded protein belongs to the phosphoinositide (PI)-3-kinase family. VPS34 is widely expressed in all tissues of mammals.
Immunogen
synthetic peptide corresponding to amino acids 22-34 of human VPS34, conjugated to KLH via an added cysteine residue. The corresponding sequence is identical in mouse and rat.
Application
Anti-VPS34 antibody produced in rabbit has been used in immunoblotting.[1]
Biochem/physiol Actions
Vacuolar protein sorting 34 (VPS34) is a lipid kinase that phosphorylate phosphatidylinositol (PtdIns), to form phosphatidylinositol 3 phosphate (PtdIns3P). VPS34 plays a vital role in various intracellular trafficking events such as autophagy and phagosome formation. Thus, the inhibition of kinase activity of Vps34 might be considered as a potential therapeutic method for cancer treatment. VPS34 is also involved in internal vesicle formation within multivesicular endosomes, reverse transport of endosome to Golgi apparatus and membrane transport from the outer nuclear membrane towards the cell periphery. Mutation in the gene encoding VPS34 is associated with pathogenesis of schizophrenia. VPS34 plays an essential role in nutrient/amino acid induced activation of mechanistic target of rapamycin (mTOR) signaling in cultured cells and it also facilitates early embryogenesis and cell proliferation.
Target description
VPS34 is known to be involved in endocytosis and vesiculartrafficking.
Physical form
Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.
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Journal of medicinal chemistry, 58(1), 376-400 (2014-11-18)
Vps34 (the human class III phosphoinositide 3-kinase) is a lipid kinase involved in vesicle trafficking and autophagy and therefore constitutes an interesting target for cancer treatment. Because of the lack of specific Vps34 kinase inhibitors, we aimed to identify such
The Pik3c3 gene encodes an 887 amino acid lipid kinase, phosphoinositide-3-kinase class 3 (PIK3C3). PIK3C3 is known to regulate various intracellular membrane trafficking events. However, little is known about its functions during early embryogenesis in mammals. To investigate the function
Here we present a detailed genetic analysis of let-512/vps34 that encodes the Caenorhabditis elegans homologue of the yeast phosphatidylinositol 3-kinase Vps34p. LET-512/VPS34 has essential functions and is ubiquitously expressed in all tissues and developmental stages. It accumulates at a perinuclear
Gaucher disease, the inherited deficiency of lysosomal glucocerebrosidase, is characterized by the presence of glucosylcer-amide macrophages, the accumulation of glucosylceramide in lysosomes and the secretion of inflammatory cytokines. However, the connection between this lysosomal storage and inflammation is not clear.
The phosphoinositide (PI) 3-kinase family.
Fiona M Foster et al.
Journal of cell science, 116(Pt 15), 3037-3040 (2003-06-28)
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