Minireview Blocks Apoptosis

. In vitro, this lipid can beMontreal Neurological Institute producedby thep170/mCpk-typePI3K that phosphory-McGill University lates PtdIns-4-P at the D-3 position (Figure 1) or by aMontreal, Quebec H3A 2B4 kinase that phosphorylates PtdIns-3-P at the D-4 posi-Canada tion (not shown). Thus, the relative levels of PtdIns-3,4-