Purified anti-TSC2 Phospho (Ser664)

Tuberous sclerosis complex (TSC) is an autosomal dominant genetic disorder that is caused by mutation in either the TSC1 (hamartin) or TSC2 (tuberin) gene. TSC1 and TSC2 proteins form a physical and functional heterodimer in vivo that inhibits ribosomal protein S6 kinase 1 (S6K1) and activates eukaryotic initiation factor 4E-bindingprotein 1 (4E-BP1) by inhibition of the mammalian target of rapamycin (mTOR). TSC2 belongs to small GTPase protein of the Ras superfamily, contain a Rap-GAP domain. Predicted molecular weight 201 kD. Ser664 TSC2 phosphorylation leads to TSC1-TSC2 dissociation and markedly impairs TSC2 ability to inhibit mTOR signaling, cell proliferation, and oncogenic transformation. Erk (extracellular signal-regulated kinase) may contribute to tumorigenesis by phosphorylating TSC2 at specific residues, particularly S664.