Stimulation of phosphatidylethanolamine exchange by castor bean cytosol proteins |
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Authors: | Boussange J Douady D Kader J C |
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Affiliation: | Université Pierre et Marie Curie, Laboratoire Physiologie Cellulaire (ERA 323), 4 Place Jussieu, 75005 Paris, France. |
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Abstract: | Cytosol proteins prepared from castor bean endosperm (4-day-old) seedlings stimulate the exchange of [3H]phosphatidylethanolamine between liposomes and mitochondria. The acceleration of the exchange depends on the quantity of cytosol proteins, the time of incubation, and the respective amounts of liposomes and mitochondria. On a per seedling basis, the active proteins are essentially located in the endosperm, whereas the roots and the cotyledons are less rich in these proteins. |
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