PI3K/Akt/mTOR · target hub
Phosphatidylinositol 3-kinase catalytic subunit type 3 (PIK3C3)
PIK3C3 is a PI3K lipid kinase / regulatory module on the PI3K/Akt/mTOR axis. Catalytic subunit of the PI3K complex that mediates formation of phosphatidylinositol 3-phosphate; different complex forms are believed to play a role in multiple membrane trafficking pathways: PI3KC3-C1 is involved in initiation of autophagosomes and PI3KC3-C2 in maturation of a… It is indexed under "Class III PI3K (Vps34 complex; autophagy/endosome crosstalk)" on our pathway page for antibodies, inhibitors, and assay guidance.
| Type / example | Domain / context (brief) |
|---|---|
| Expression context | Tissue/cell-type–dependent expression |
| Rare variants | Sporadic variants—require functional validation |
| Pathway coupling | Co-occurs with neighboring nodes on the hub |
Naming and prevalence vary by cohort and assay—annotate clinically with COSMIC, ClinVar, OncoKB, and datasheets; research context only.
Examples below reflect common literature and public resources (e.g., CCLE, DepMap)—validate genotypes, expression, and passage in your own stocks before committing assays.
Human tissues and primary cells require ethics/IRB approval; tumors are heterogeneous—record histotype, site, and preservation conditions.
Overexpression vs endogenous PIK3C3 can differ in dosage, splicing, and compartmentation—in organoids/PDX, record passage, matrix, and drug history.
Adds PIK3C3 keyword bias atop the PI3K/Akt/mTOR antibody pool—if sparse, use presets above or global search.
This content supports research reagents and pathway education—not medical advice. Annotate mutations, drug indications, and protocols with authoritative databases, datasheets, and institutional oversight.
Last reviewed: 2026-05-18
See the PI3K/Akt/mTOR hub for neighboring nodes and assay guidance—cross-check MAPK, RTK, metabolism, and autophagy pages as needed.