HOW BACTERIA ASSEMBLE FLAGELLA

The bacterial flagellum is both a motor organelle and a protein export/assembly apparatus. It extends from the cytoplasm to the cell exterior. All the protein subunits of the external elements have to be exported. Export employs a type III pathway, also utilized for secretion of virulence factors. S...

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Veröffentlicht in:Annual review of microbiology 2003-01, Vol.57 (1), p.77-100
1. Verfasser: Macnab, Robert M
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description The bacterial flagellum is both a motor organelle and a protein export/assembly apparatus. It extends from the cytoplasm to the cell exterior. All the protein subunits of the external elements have to be exported. Export employs a type III pathway, also utilized for secretion of virulence factors. Six of the components of the export apparatus are integral membrane proteins and are believed to be located within the flagellar basal body. Three others are soluble: the ATPase that drives export, a regulator of the ATPase, and a general chaperone. Exported substrates diffuse down a narrow channel in the growing structure and assemble at the distal end, often with the help of a capping structure.
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subjects Adenosine Triphosphatases - physiology
assembly
Bacteria
Bacterial Physiological Phenomena
Bacterial Proteins - physiology
Bacteriology
Biological and medical sciences
Cell division
Flagella (Microbiology)
Flagella - physiology
flagellum
Fundamental and applied biological sciences. Psychology
Genes, Regulator - physiology
Membrane Proteins - physiology
Microbiology
Miscellaneous
Molecular Chaperones - physiology
Morphogenesis - physiology
motility
protein export
Proteins
type III pathway
title HOW BACTERIA ASSEMBLE FLAGELLA
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