Enzymes, Metabolic proteins
Intracellular
Low cell type specificity
Low immune cell specificity
Low cell line specificity
Component of the PI3K (PI3KC3/PI3K-III/class III phosphatidylinositol 3-kinase) complex the core of which is composed of the catalytic subunit PIK3C3, the regulatory subunit PIK3R4 and BECN1 associating with additional regulatory/auxilliary subunits to form alternative complex forms. Alternative complex forms containing a forth regulatory subunit in a mutually exclusive manner are PI3K complex I (PI3KC3-C1) containing ATG14, and PI3K complex II (PI3KC3-C2) containing UVRAG (PubMed:8999962, PubMed:19270696, PubMed:23878393, PubMed:25490155). PI3KC3-C1 displays a V-shaped architecture with PIK3R4 serving as a bridge between PIK3C3 and the ATG14:BECN1 subcomplex (PubMed:25490155). Both, PI3KC3-C1 and PI3KC3-C2, can associate with further regulatory subunits, such as RUBCN, SH3GLB1/Bif-1, AMBRA1 and NRBF2 (PubMed:19270696, PubMed:20643123, PubMed:24785657). PI3KC3-C1 probably associates with PIK3CB (By similarity). Interacts with RAB7A in the presence of PIK3C3/VPS34 (PubMed:14617358). Interacts with NRBF2 (PubMed:24785657).
Kinase, Serine/threonine-protein kinase, Transferase
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For Research Use Only. Not For Clinical Use.