[Phospholipid composition of E. coli cells and membranes under repression and derepression of alkaline phosphatase biosynthesis].

Lipid composition of E. coli membranes and cells in conditions of repression, derepression and constitutive synthesis of alkaline phosphatase is studied. The identity of qualitative composition of phospholipids and neutral lipids in these conditions is demonstrated. Derepressed and constitutive enzyme syntheses are correlating, a certain increase of phosphatidylglycerol in the total phospholipid pool being more pronounced in cells, than in membranes. The enzyme synthesis correlates also with the increase of 14C-label incorporation into lipids.