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Centrin in Giardia lamblia - ultrastructural localization.

Gladys Corrêa1, José Andres Morgado-Diaz, Marlene Benchimol

  • 1Laboratório de Ultraestrutura Celular, Universidade Santa Ursula, Rua Jornalista Orlando Dantas, 59 Botafogo, CEP 22231-010, Rio de Janeiro, Brazil.

FEMS Microbiology Letters
|March 27, 2004
PubMed
Summary
This summary is machine-generated.

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Centrin, a calcium-binding protein, is found in key microtubule structures of the early diverging parasite Giardia lamblia, including flagella and the adhesive disc. This suggests centrin plays a role in the dynamic functions of these cellular components.

Area of Science:

  • Cell Biology
  • Parasitology
  • Biochemistry

Background:

  • Giardia lamblia is a primitive, multiflagellar eukaryotic parasite.
  • It has a complex cytoskeleton with microtubule-based structures like flagella and an adhesive disc.
  • Centrin is a calcium-binding protein known for calcium-sensitive contractile behavior.

Purpose of the Study:

  • To determine the ultrastructural localization of centrin in Giardia lamblia.
  • To investigate the potential role of centrin in the parasite's cytoskeleton.

Main Methods:

  • Used several monoclonal antibodies specific to centrin.
  • Performed ultrastructural localization studies on Giardia lamblia.

Main Results:

Related Experiment Videos

  • Centrin showed positive labeling in basal bodies and all flagella axonemes.
  • The ventral adhesive disc, funis, median bodies, and dense rods also exhibited positive centrin labeling.
  • Centrin is localized in critical microtubule-associated regions.

    • Conclusions:

    • Centrin is present in multiple microtubule-based structures within Giardia lamblia.
    • The localization suggests centrin is involved in the function of these dynamic cytoskeletal elements.