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Dual flagellar systems enable motility under different circumstances
1Department of Microbiology, The University of Iowa, Iowa City, Iowa 52246, USA. linda-mccarter@uiowa.edu
Journal of Molecular Microbiology and Biotechnology
|June 2, 2004
Summary
Bacteria like Vibrio parahaemolyticus use dual flagellar systems for movement. This review details their distinct polar and lateral flagella, gene regulation, and energy sources for locomotion.
Area of Science:
- Microbiology
- Bacterial Locomotion
- Molecular Biology
Background:
- Flagella are essential bacterial organelles for motility.
- Some bacteria possess dual flagellar systems for varied environments.
- Vibrio parahaemolyticus utilizes both polar and lateral flagella.
Purpose of the Study:
- To review the polar and lateral flagellar systems in Vibrio parahaemolyticus.
- To detail the genetic and regulatory elements of each system.
- To compare their energy sources and chromosomal locations.
Main Methods:
- Literature review of flagellar systems in Vibrio parahaemolyticus.
- Analysis of identified polar and lateral flagellar genes.
- Examination of gene expression timing and regulatory factors.
Main Results:
- V. parahaemolyticus has distinct polar (swimming) and lateral (swarming) flagella.
- Approximately 50 polar and 40 lateral flagellar genes identified.
- Polar flagella use sodium motive force; lateral use proton motive force.
- Genes are located on different chromosomes; regulated by specific sigma factors.
Conclusions:
- Dual flagellar systems provide versatile motility for V. parahaemolyticus.
- Distinct genetic and regulatory mechanisms control each system.
- Shared chemotaxis pathways integrate navigation for both flagellar types.