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The Trichomonad Hydrogenosome

  • Sabrina D. Dyall
  • Patricia J. Johnson
Chapter

Abstract

Trichomonads are deep-branching protists that are thought to be early-diverging eukaryotes (Sogin, 1991). These organisms belong to the phylum Parabasalia which encompasses both non-parasitic and parasitic trichomonads. The two best studied parasitic trichomonads are the cattle-infective parasite, Tritrichomonas foetus and the human-infective parasite, Trichomonas vaginalis. These parasites are flagellated, extracellular organisms that are sexually transmitted and reside in the urogenital tracts of their hosts. Over 150 million cases of human trichomoniasis are reported each year and significant financial losses are frequently suffered due to trichomoniasis in cattle, making these parasites important in both the medical and agricultural communities. Aside from their medical and agricultural importance, a number of unusual biochemical properties of Trichomonas have captured the attention of scientists. The appeal of trichomonads from a biological viewpoint stems, in large part, from properties that reflect both their primitive nature and parasitic lifestyle. For example, trichomonads lack two organelles typically found in eukaryotes, the mitochondrion and the peroxisome, but instead contain an organelle involved in carbohydrate metabolism called the hydrogenosome.

Keywords

Heat Shock Protein Leader Sequence Adenylate Kinase Leader Peptide Anaerobic Fungus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • Sabrina D. Dyall
    • 1
  • Patricia J. Johnson
    • 1
  1. 1.Department of Microbiology and ImmunologyUniversity of CaliforniaLos AngelesUSA

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