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Related Concept Videos

Diversity of Protists II01:27

Diversity of Protists II

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Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
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Excavata is a diverse group of protists that includes both chemoorganotrophic and phototrophic species, with some thriving in anaerobic environments. Among the key groups within Excavata are diplomonads and parabasalids, which are flagellated protists that lack mitochondria and chloroplasts. These microorganisms typically inhabit anoxic environments, such as the intestines of animals, where they exist either symbiotically or as parasites, relying on fermentation for energy production. Some...
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Related Experiment Video

Updated: Mar 30, 2026

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii
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Toxoplasma's Taste for Exotic Fat.

Roland G Roberts1

  • 1Public Library of Science, Cambridge, United Kingdom.

Plos Biology
|November 14, 2015
PubMed
Summary

A novel lipid, phosphatidylthreonine, is crucial for a common human parasite's survival and virulence. This finding offers new insights into parasitic membrane composition and function.

Area of Science:

  • Biochemistry
  • Parasitology
  • Cell Biology

Background:

  • Cell membranes are composed of lipids, which are vital for structure and function.
  • Human parasites cause significant global health burdens.
  • Understanding parasitic lipid metabolism is key to developing new treatments.

Purpose of the Study:

  • To investigate the lipid composition of a widespread human parasite.
  • To determine the role of specific lipids in parasite virulence.

Main Methods:

  • Lipidomic analysis of parasite membranes.
  • Genetic manipulation to assess the essentiality of phosphatidylthreonine.
  • Virulence assays in relevant models.

Main Results:

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  • Phosphatidylthreonine (PT) constitutes a major lipid component of the parasite's membrane.
  • Disruption of PT synthesis renders the parasite avirulent.
  • PT is essential for parasite growth and survival.

Conclusions:

  • Phosphatidylthreonine is a critical and essential lipid for human parasite virulence.
  • Targeting PT synthesis presents a potential therapeutic strategy against this parasite.