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Calcium in the Backstage of Malaria Parasite Biology

Abstract : The calcium ion (Ca 2+ ) is a ubiquitous second messenger involved in key biological processes in prokaryotes and eukaryotes. In Plasmodium species, Ca 2+ signaling plays a central role in the parasite life cycle. It has been associated with parasite development, fertilization, locomotion, and host cell infection. Despite the lack of a canonical inositol-1,4,5-triphosphate receptor gene in the Plasmodium genome, pharmacological evidence indicates that inositol-1,4,5-triphosphate triggers Ca 2+ mobilization from the endoplasmic reticulum. Other structures such as acidocalcisomes, food vacuole and mitochondria are proposed to act as supplementary intracellular Ca 2+ reservoirs. Several Ca 2+ -binding proteins (CaBPs) trigger downstream signaling. Other proteins with no EF-hand motifs, but apparently involved with CaBPs, are depicted as playing an important role in the erythrocyte invasion and egress. It is also proposed that a cross-talk among kinases, which are not members of the family of Ca 2+ -dependent protein kinases, such as protein kinases G, A and B, play additional roles mediated indirectly by Ca 2+ regulation. This statement may be extended for proteins directly related to invasion or egress, such as SUB1, ERC, IMC1I, IMC1g, GAP45 and EBA175. In this review, we update our understanding of aspects of Ca 2+ -mediated signaling correlated to the developmental stages of the malaria parasite life cycle.
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Contributor : Philippe Grellier Connect in order to contact the contributor
Submitted on : Sunday, April 24, 2022 - 9:03:23 AM
Last modification on : Friday, August 5, 2022 - 11:40:02 AM
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Lucas Silva de Oliveira, Marcos Rodrigo Alborghetti, Renata Garcia Carneiro, Izabela Marques Dourado Bastos, Rogerio Amino, et al.. Calcium in the Backstage of Malaria Parasite Biology. Frontiers in Cellular and Infection Microbiology, Frontiers, 2021, 11, pp.708834. ⟨10.3389/fcimb.2021.708834⟩. ⟨mnhn-03650070⟩



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