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For Research Use Only. Not For Clinical Use.
Transporters
Intracellular
Low cell type specificity
Low immune cell specificity
Low cell line specificity
Forms homooligomers; homo-oligomerization is essential for the roles in membrane tethering and enhancement of SNARE-mediated fusion (PubMed:25686604). Component of the PI3K (PI3KC3/PI3K-III/class III phosphatidylinositol 3-kinase) complex I (PI3KC3-C1) in which the core composed of the catalytic subunit PIK3C3, the regulatory subunit PIK3R4 and BECN1 is associated with ATG14 (PubMed:18843052, PubMed:19050071, PubMed:19270696, PubMed:22314358, PubMed:23878393). PI3KC3-C1 displays a V-shaped architecture with PIK3R4 serving as a bridge between PIK3C3 and the ATG14:BECN1 subcomplex (PubMed:25490155). PI3KC3-C1 can associate with further regulatory subunits. Interacts with PIK3CB (By similarity). Interacts (via coiled-coil domain) with BECN2 (via coiled-coil domain); this interaction is tighter than BECN2 self-association (PubMed:23954414, PubMed:28218432). Interacts with the STX17-SNAP29 binary t-SNARE complex (PubMed:25686604). Interacts with NRBF2 (By similarity). Interacts with PIK3C3 and BECN1; this interaction is increased in the absence of TMEM39A (PubMed:31806350). Interacts with STEEP1; the interaction is required for trafficking of STING1 from the endoplasmic reticulum (PubMed:32690950).