LARVAL MUSCA-DOMESTICA LIPOPHORIN BIOSYNTHESIS

1. Larval Musca domestica lipophorin biosynthesis was studied in vitro. 2. The newly synthesized lipophorin has a density a little lower than the circulating lipophorin after 1 hr of incubation. After 3 hr of incubation the fat body cells transfer lipids to the lipophorin that attains the density of circulating lipophorin. 3. The lipophorin synthesized in vitro in identical to circulating lipophorin in density and in electrophoretical behavior. 4. However these two molecules must have differences since the circulating lipophorin transfers lipids to fat body cells while the synthesized in vitro does not. 5. The biosynthesis of Musca lipophorin shows differences with the Manduca sexta lipophorin biosynthesis.