Abstract

During ciliogenesis, centrioles convert to membrane-docked basal bodies, which initiate the formation of cilia/flagella and template the nine doublet microtubules of the flagellar axoneme. The discovery that many human diseases and developmental disorders result from defects in flagella has fueled a strong interest in the analysis of flagellar assembly. Here, we will review the structure, function, and development of basal bodies in the unicellular green alga Chlamydomonas reinhardtii, a widely used model for the analysis of basal bodies and flagella. Intraflagellar transport (IFT), a flagella-specific protein shuttle critical for ciliogenesis, was first described in C. reinhardtii. A focus of this review will be on the role of the basal bodies in organizing the IFT machinery.

Highlights

  • Cilia and flagella are thread-like cell extensions

  • The four fibers are interconnected as composition of the flagellar basal apparatus of C. reinhardtii, analyze the development of basal bodies indicated by the green shaded area

  • In bld2-1, of Bld12p/SAS6 and the pinheads of the cartwheel are composed of Bld10p/CEP135 mutants of ε-tubulin, bodies consist of a ring of singlet microtubules and flagella are absent. uni3-1

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Summary

Introduction

Cilia and flagella (terms referring essentially to the same cell organelles) are thread-like cell extensions. Reinhardtii, and numerous mutants with defects in basal body asbasal organizing for the for cell’s This is apparent in flagellate protists structure, number, position and function have been identified (Figure 2). Neither flagella nor basal bodies are essential for C. reinhardtii, and numerous mutants with defects in basal body structure, basal bodies, the probasal bodies (proBB3) and the microtubular roots consisting of 2 (2MT) or 4 number, position and function have been identified (Figure 2). The four fibers are interconnected as composition of the flagellar basal apparatus of C. reinhardtii, analyze the development of basal bodies indicated by the green shaded area. (darkbasal blue) and the pinheads of the cartwheel are composed of Bld10p/CEP135 mutants of ε-tubulin, bodies consist of a ring of singlet microtubules and flagella are absent. For the distribution of cells with 0–4 flagella are based on Kuchka and Jarvik, 1982

Basal Bodies
The Basal Body Scaffold
Microtubular Roots
Fibrous Roots
Centrin-Based Structures
The Basal Bodies in Mitosis
Basal Bodies as Organizing Centers for Flagella
Templating of the Axoneme
Findings
The Transition Zone

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