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The phosphatidylinositol (3,4,5)-trisphosphate phosphatase and tensin homolog (PTEN) is a tumor supressor protein discovered 20 years ago by two independent laboratories1. PTEN is also known to regulate diverse cellular functions such as adhesion, migration, proliferation, growth, and survival. PTEN is composed of five domains: an N-terminal phosphatidylinositol (4,5)-bisphosphate (PIP2)-binding domain, a catalytic tensin-type phosphatase domain, a C2 tensin-type domain that binds phospholipids, a C-terminal tail domain, and a PDZ-binding domain (Fig. 1). The role of PTEN as a tumor suppressor is attributed to its lipid phosphatase activity which inhibits the phosphatidylinositol-3-kinase (PI3K)/Akt signaling pathway integral for cell survival and growth by converting phosphatidylinositol (3,4,5)- trisphosphate (PIP3) into PIP2.


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  • Signal Seeker™ Kits and Pathway Tools, PTM Antibodies, Beads, and more.
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alex castellanos