R. O’Donnell

Publications30
h-index18
Citations2,179
Highly Influential Citations135
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Subcellular Discharge of a Serine Protease Mediates Release of Invasive Malaria Parasites from Host Erythrocytes
The most virulent form of malaria is caused by waves of replication of blood stages of the protozoan pathogen Plasmodium falciparum. The parasite divides within an intraerythrocytic parasitophorous… Expand
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Molecular Identification of a Malaria Merozoite Surface Sheddase
Proteolytic shedding of surface proteins during invasion by apicomplexan parasites is a widespread phenomenon, thought to represent a mechanism by which the parasites disengage adhesin-receptor… Expand
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Antibodies against Merozoite Surface Protein (Msp)-119 Are a Major Component of the Invasion-Inhibitory Response in Individuals Immune to Malaria
Antibodies that bind to antigens expressed on the merozoite form of the malaria parasite can inhibit parasite growth by preventing merozoite invasion of red blood cells. Inhibitory antibodies are… Expand
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Intramembrane proteolysis mediates shedding of a key adhesin during erythrocyte invasion by the malaria parasite
Apicomplexan pathogens are obligate intracellular parasites. To enter cells, they must bind with high affinity to host cell receptors and then uncouple these interactions to complete invasion.… Expand
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A Novel Family of Apicomplexan Glideosome-associated Proteins with an Inner Membrane-anchoring Role*
The phylum Apicomplexa are a group of obligate intracellular parasites responsible for a wide range of important diseases. Central to the lifecycle of these unicellular parasites is their ability to… Expand
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Functional conservation of the malaria vaccine antigen MSP-119across distantly related Plasmodium species
The C-terminal region of Plasmodium falciparum merozoite surface protein 1 (MSP-119) is at present a leading malaria vaccine candidate. Antibodies against the epidermal growth factor-like domains of… Expand
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Evidence That Invasion-Inhibitory Antibodies Specific for the 19-kDa Fragment of Merozoite Surface Protein-1 (MSP-119) Can Play a Protective Role against Blood-Stage Plasmodium falciparum Infection…
The C-terminal 19-kDa fragment of Plasmodium falciparum merozoite surface protein-1 (MSP-119) is a target of protective Abs against blood-stage infection and a leading candidate for inclusion in a… Expand
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An alteration in concatameric structure is associated with efficient segregation of plasmids in transfected Plasmodium falciparum parasites.
Transfection of the human malaria parasite Plasmodium falciparum is currently performed with circularised plasmids that are maintained episomally in parasites under drug selection but which are… Expand
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A New Rodent Model to Assess Blood Stage Immunity to the Plasmodium falciparum Antigen Merozoite Surface Protein 119 Reveals a Protective Role for Invasion Inhibitory Antibodies
Antibodies capable of inhibiting the invasion of Plasmodium merozoites into erythrocytes are present in individuals that are clinically immune to the malaria parasite. Those targeting the 19-kD… Expand
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A genetic screen for improved plasmid segregation reveals a role for Rep20 in the interaction of Plasmodium falciparum chromosomes
Bacterial plasmids introduced into the human malaria parasite Plasmodium falciparum replicate well but are poorly segregated during mitosis. In this paper, we screened a random P.falciparum genomic… Expand
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