A lipid transfer particle in Musca domestica haemolymph |
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| Institution: | 1. Laboratório de Bioquímica de Lipídios e Lipoproteínas, Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil;2. Instituto de Biologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro, RJ, 24.210-130, Brazil;3. Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil |
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| Abstract: | - 1.1. In Musca domestica haemolymph a lipid transfer particle (LTP) is present.
- 2.2. Musca domestica LTP is able to catalyze the transfer of lipids between different housefly lipophorin forms and also between lipophorins of Diptera and Lepidoptera.
- 3.3. The lipophorin of larval Dione juno (Lepidoptera) was purified and is composed of two apolipoproteins, apolipophorin I (Mr = 209,000) and apolipophorin II (Mr = 85,000) with a density of 1.124 g/ml.
- 4.4. The density of housefly lipophorin undergoes variations during the gonotrophic cycle.
- 5.5. The lipophorin density variation results suggest that when a high rate of lipid utilization occurs, the lipophorin has a higher density value.
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