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  • Title: A Plasmodium falciparum protein located in Maurer's clefts underneath knobs and protein localization in association with Rhop-3 and SERA in the intracellular network of infected erythrocytes.
    Author: Sam-Yellowe TY, Fujioka H, Aikawa M, Hall T, Drazba JA.
    Journal: Parasitol Res; 2001 Mar; 87(3):173-85. PubMed ID: 11293564.
    Abstract:
    We report on the characterization of monoclonal antibodies against Plasmodium falciparum schizonts, which recognize parasite proteins of 130 kDa and 20 kDa. The 130-kDa protein was released by alkaline sodium carbonate treatment, suggesting that the protein is a peripheral membrane protein, while the 20-kDa protein remained associated with the membranes following alkali treatment, suggesting it may be an integral membrane protein. Both proteins were localized to large cytoplasmic vesicles within the cytoplasm of trophozoite and schizont-infected erythrocytes by immunofluorescence assay and confocal microscopy. Both proteins colocalized with Bodipy-ceramide in trophozoite and immature schizont-infected erythrocytes, but not in segmenters. The 130-kDa protein was localized by immunoelectron microscopy (IEM) to Maurer's clefts underneath knobs in a knobby and cytoadherent (K +/ C+) P. falciparum strain. No IEM reactivity was obtained in a knobless and non-cytoadherent (K-/C-)
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