label: phosphatidylinositol 3-kinase catalytic subunit binding
label_lc: phosphatidylinositol 3-kinase catalytic subunit binding
description: "Binding to the catalytic subunit of a phosphatidylinositol 3-kinase. The catalytic subunit catalyzes the addition of a phosphate group to an inositol lipid at the 3' position of the inositol ring."