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Published on: June 20, 2018
Mycoplasmas: a distinct cytoskeleton for wall-less bacteria
Mitchell F Balish1, Duncan C Krause
1Department of Microbiology, Miami University, Oxford, Ohio 45056, USA. balishmf@muohio.edu
Abstract:
The bacterial genus Mycoplasma includes a large number of highly genomically-reduced species which in nature are associated with hosts either commensally or pathogenically. Several Mycoplasma species, including Mycoplasma pneumoniae, feature a multifunctional polar structure, the terminal organelle. Essential for colonization of the host and for gliding motility, the terminal organelle is associated with an internal cytoskeleton crucial to its assembly and function. This cytoskeleton is structurally and compositionally novel as compared with the cytoskeletons of other organisms, including other bacteria, is also involved in the cell division process. In this review we discuss the cytoskeletal structures and protein components of the attachment organelle and how they might interact and contribute to its various functions.
Insights
Mycoplasma pneumoniae utilizes a unique terminal organelle, supported by a novel cytoskeleton, for host colonization and motility. This cytoskeleton is also vital for bacterial cell division.
Area of Science:
- Microbiology
- Cell Biology
- Bacterial Pathogenesis
Background:
- Mycoplasma are bacteria with reduced genomes, often associated with hosts.
- Mycoplasma pneumoniae possesses a specialized terminal organelle essential for host interaction.
- This organelle relies on an internal cytoskeleton for its assembly and function.
Purpose of the Study:
- To review the cytoskeletal structures and protein components of the Mycoplasma terminal organelle.
- To explore the interactions within the cytoskeleton and their contribution to organelle function.
- To highlight the novelty of this cytoskeleton compared to other bacterial cytoskeletons.
Main Methods:
- Literature review of existing studies on Mycoplasma cytoskeleton.
- Analysis of structural and compositional data of the terminal organelle's cytoskeleton.
- Comparative analysis with cytoskeletons from other bacterial species.
Main Results:
- The terminal organelle's cytoskeleton is structurally and compositionally unique.
- This cytoskeleton is crucial for organelle assembly, host colonization, and gliding motility.
- The cytoskeleton also plays a role in Mycoplasma cell division.
Conclusions:
- The novel cytoskeleton of Mycoplasma pneumoniae is a key factor in its pathogenic lifestyle.
- Understanding this unique cytoskeletal system offers insights into bacterial cell structure and function.
- Further research into the cytoskeletal components and their interactions is warranted.
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