Can J Biochem 1980 Jul 01;587:559-64. doi: 10.1139/o80-076.

Lipid metabolism during embryonic and early postembryonic development of Xenopus laevis.

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Xenopus laevis embryos were analyzed for their lipid content from fertilization to feeding stage. The amounts of the major lipids did not change until after hatching, but at the feeding stage the amounts of phosphatidylcholine (PC), phosphatidylethanolamine (PE), and sterol esters (SE) increased approximately twofold. Prior to hatching, [14C]acetate label was incorporated primarily into the fatty acyl chains of PE. After hatching, increasing amounts of label were found in other phospholipids, in their glycerol backbones, and in nonglycerol lipids. The most marked changes occurred just before the onset of feeding, and pulse-chase experiments suggest that nonlipid reserves are mobilized at this stage for de novo lipid synthesis.

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Species referenced: Xenopus laevis
Genes referenced: pc.1