Turnover of the glycerol moiety of different lipid classes during development of Ceratitis capitata |
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| Affiliation: | 1. Department of Biological Sciences, Missouri University of Science and Technology, Rolla, MO 65409, United States;2. Department of Mathematics and Statistics, Missouri University of Science and Technology, Rolla, MO 65409, United States;3. Department of Chemistry, Missouri University of Science and Technology, Rolla, MO 65409, United States |
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| Abstract: | - 1.1. Labelling of triacylglycerols, diacylglycerols, phosphatidylelthanolamine, phosphatidylcholine and their lysoderivatives was followed during the development of Ceratitis capitata after feeding larvae with [3H]glycerol. Both, specific activity and dpm/individual were plotted versus the time of development.
- 2.2. Decay curve for diacylglycerols had two exponential components accounting for two metabolic pools of this lipid class. Decay curves for phosphoglycerides and triacylglycerols exhibited a monophasic behaviour.
- 3.3. Triacylglycerols had large values of the turnover time parameters consistent with their reserve nature; phosphoglycerides exhibited a turnover time lower than that of triacylglycerols and similar to that of diacylglycerols in agreement with their metabolic relationships.
- 4.4. Half-life values of lysoderivatives were shorter than that of diacylglycerols suggesting a rapid deacylation-acylation mechanism for the phosphoglycerides.
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