PI3K/Akt/mTOR · target hub
Serine/threonine-protein kinase Chk2 (CHEK2)
CHEK2 is a Autophagy/AMPK/DDR crosstalk with mTOR on the PI3K/Akt/mTOR axis. Serine/threonine-protein kinase which is required for checkpoint-mediated cell cycle arrest, activation of DNA repair and apoptosis in response to the presence of DNA double-strand breaks. May also negatively regulate cell cycle progression during unperturbed cell cycles. Followi… It is indexed under "DNA-PK & DDR kinases (Akt cross-phosphorylation, model-dependent)" 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 CHEK2 can differ in dosage, splicing, and compartmentation—in organoids/PDX, record passage, matrix, and drug history.
Adds CHEK2 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.