P. Johnson

Publications110
h-index42
Citations6,147
Highly Influential Citations286
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Draft Genome Sequence of the Sexually Transmitted Pathogen Trichomonas vaginalis
We describe the genome sequence of the protist Trichomonas vaginalis, a sexually transmitted human pathogen. Repeats and transposable elements comprise about two-thirds of the ∼160-megabase genome,… Expand
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Ancient Invasions: From Endosymbionts to Organelles
The acquisitions of mitochondria and plastids were important events in the evolution of the eukaryotic cell, supplying it with compartmentalized bioenergetic and biosynthetic factories. Ancient… Expand
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A common evolutionary origin for mitochondria and hydrogenosomes.
Trichomonads are among the earliest eukaryotes to diverge from the main line of eukaryotic descent. Keeping with their ancient nature, these facultative anaerobic protists lack two "hallmark"… Expand
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Trichomonas vaginalis Exosomes Deliver Cargo to Host Cells and Mediate Host∶Parasite Interactions
Trichomonas vaginalis is a common sexually transmitted parasite that colonizes the human urogential tract where it remains extracellular and adheres to epithelial cells. Infections range from… Expand
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Targeting and translocation of proteins into the hydrogenosome of the protist Trichomonas: similarities with mitochondrial protein import
Trichomonads are early‐diverging eukaryotes that lack both mitochondria and peroxisomes. They do contain a double membrane‐bound organelle, called the hydrogenosome, that metabolizes pyruvate and… Expand
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Presence of a Member of the Mitochondrial Carrier Family in Hydrogenosomes: Conservation of Membrane-Targeting Pathways between Hydrogenosomes and Mitochondria
ABSTRACT A number of microaerophilic eukaryotes lack mitochondria but possess another organelle involved in energy metabolism, the hydrogenosome. Limited phylogenetic analyses of nuclear genes… Expand
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Prevalence of Neospora hughesi and Sarcocystis neurona antibodies in horses from various geographical locations.
Parasite-specific antibody responses to Neospora antigens were detected using the immunofluorescent antibody test (IFAT) and immunoblot analysis in select equine populations. For comparison, a… Expand
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Transient and selectable transformation of the parasitic protist Trichomonas vaginalis.
We have developed methods to transiently and selectably transform the human-infective protist Trichomonas vaginalis. This parasite, a common cause of vaginitis worldwide, is one of the earlier… Expand
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Non-mitochondrial complex I proteins in a hydrogenosomal oxidoreductase complex
Trichomonas vaginalis is a unicellular microaerophilic eukaryote that lacks mitochondria yet contains an alternative organelle, the hydrogenosome, involved in pyruvate metabolism. Pathways between… Expand
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Proteome Analysis of the Surface of Trichomonas vaginalis Reveals Novel Proteins and Strain-dependent Differential Expression*
The identification of surface proteins on the plasma membrane of pathogens is of fundamental importance in understanding host-pathogen interactions. Surface proteins of the extracellular parasite… Expand
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