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Toxoplasma gondii: redistribution of tachyzoite surface protein during host cell invasion and intracellular development

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Abstract

Immunoperoxidase localisation of antigen at the electron microscope level confirms that parasite surface proteins, in association with membrane, are shed from the surface of the zoite on invasion, while varying amounts are also internalised. SAG 1 is stable on intracellular zoites for up to 48h, although new protein is also synthesised. SAG1 is present on the surface of daughter zoites and is found throughout the infected cell in distinct vacuoles; these vacuoles represent either direct extensions of the parasitophorous vacuole or true export of parasite surface material.

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Author notes

  1. Jane Grimwood

    Present address: Department of Medicine, Dartmouth College, Hanover, NH, USA

Authors and Affiliations

  1. Department of Pure & Applied Biology, The University of Leeds, LS2 9JT, Leeds, UK

    Jane Grimwood & Judith E. Smith

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  1. Jane Grimwood
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  2. Judith E. Smith
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Grimwood, J., Smith, J.E. Toxoplasma gondii: redistribution of tachyzoite surface protein during host cell invasion and intracellular development. Parasitol Res 81, 657–661 (1995). https://doi.org/10.1007/BF00931842

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  • DOI: https://doi.org/10.1007/BF00931842

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