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Mycoplasma viruses
1Department of Microbiology, University of Rochester, New York.
Abstract:
Unlike bacterial viruses that infect cells bounded by a cell wall, mycoplasma viruses have evolved to enter and propagate in mycoplasma cells bounded only by a single lipid-protein cell membrane. In addition, mycoplasmas have the smallest amount of genetic information of any known cells, so their complexity is constrained by a limited genetic coding capacity. As a consequence of these host cell differences, mycoplasma viruses have been found to have a variety of structures and replication strategies which are different from those of the bacterial viruses. This article is a critical review of mycoplasma viruses infecting the genera Acholeplasma, Spiroplasma, and Mycoplasma; included are data on classification, morphology and structure, biological and physical properties, chemical composition, and productive and lysogenic replication cycles.
Insights
Mycoplasma viruses, unlike bacterial viruses, possess unique structures and replication strategies due to infecting cells with only a membrane and limited genetic capacity. This review covers their classification, properties, and replication cycles.
Area of Science:
- Microbiology
- Virology
- Cell Biology
Background:
- Mycoplasma viruses infect hosts lacking cell walls, differing from bacterial viruses.
- Mycoplasmas possess minimal genetic information, constraining viral complexity.
- These host differences necessitate unique viral adaptations.
Purpose of the Study:
- To critically review mycoplasma viruses.
- To detail classification, morphology, and properties.
- To examine replication strategies.
Main Methods:
- Literature review of mycoplasma viruses.
- Analysis of data on classification and structure.
- Examination of biological, physical, and chemical properties.
- Review of replication cycles.
Main Results:
- Mycoplasma viruses exhibit diverse structures and replication strategies.
- Significant differences exist compared to bacterial viruses.
- Classification, morphology, properties, and replication are detailed.
Conclusions:
- Mycoplasma viruses have evolved distinct mechanisms for host cell entry and propagation.
- Their biology is shaped by host cell membrane structure and limited genetic capacity.
- This review provides a comprehensive overview of these unique viruses.