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The recycling of protein components of the flight-specific lipophorin in Locusta migratoria |
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| Institution: | 1. Instituto Español de Oceanografía (IEO), C.O. Vigo, 36280 Vigo, Spain;2. Aquatic Ecology Division, Department of Biology, Lund University, S-22362 Lund, Sweden;3. Departament de Biología Marina i Oceanografía, Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), Pg. Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain |
| Abstract: | The metabolism of locust lipophorin A+ during lipid delivery to the flight muscle and lipid loading at the fat body was studied in vitro. Protein C2 was shown to be released upon hydrolysis of lipophorin A+-carried diacylglycerol by the flight muscle lipoprotein lipase. This in vitro released protein C2 was shown to reassociate with lipophorin Ay upon hormone-induced lipid mobilization from fat body in vitro. These results demonstrate the reversibility of the association of protein C2 with lipophorin Ay and support the shuttle function of the protein components of locust lipophorin A+ in lipid transport. |
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