Increased levels of phosphatidylinositol 3-kinase activity in colorectal tumors.

Abstract excerpt

BACKGROUND: Phosphatidylinositol 3-kinase (PI 3-kinase), an enzyme that phosphorylates inositol phospholipids at the D-3 position of the inositol ring, has been implicated in the signaling pathways regulating cell growth by virtue of its activation in response to various mitogenic stimuli. In spite of the considerable attention PI 3-kinase has received with regard to its possible role in the mitogenic pathways in...

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