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  • Title: The calcium-stimulated incorporation of ethanolamine and serine into the phospholipids of the housefly Musca domestica.
    Author: Crone HD.
    Journal: Biochem J; 1967 Aug; 104(2):695-704. PubMed ID: 6048809.
    Abstract:
    1. The calcium-stimulated incorporation of [2-(14)C]ethanolamine and l-[3-(14)C]-serine into the phospholipids of homogenates of the fat bodies from larval houseflies (Musca domestica) was studied. 2. Ethanolamine and serine acted as competitive inhibitors with one another. N-Methylethanolamine was not distinguished from ethanolamine by the system. Tris buffer was also a competitor with these compounds, and a number of other amino alcohols were inhibitory, probably competitively. 3. The incorporation of [(32)P]phosphorylethanolamine into phospholipids was observed in suspensions of whole fat bodies. This incorporation was stimulated by magnesium. 4. During the incubation of the homogenates, a calcium-stimulated breakdown of phospholipids by a phospholipase A occurred. 5. These results are compared with results published for similar mammalian systems, and their possible physiological significance is discussed.
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