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The adhesins of Mycoplasma gallisepticum and M. pneumoniae
Abstract:
The growth of M. gallisepticum was monitored in regard to their capacity to haemagglutinate. The maximal potential was with cells grown for about 22 h. M. gallisepticum, like M. pneumoniae, possess a Triton shell intracellular filamentous structure which is revealed by exposing the cells to a relatively low concentration of Triton-X100. The adhesin of M. gallisepticum was partially purified on sialoglycopeptide conjugated to Sepharose-4B. The adhesin fraction was primarily composed of one polypeptide of about 75,000 molecular weight.
Insights
Mycoplasma gallisepticum exhibits maximal haemagglutination potential after 22 hours of growth. Researchers identified a 75,000 MW polypeptide adhesin, crucial for understanding M. gallisepticum interactions.
Area of Science:
- Microbiology
- Cell Biology
- Molecular Biology
Background:
- Mycoplasma gallisepticum is a significant avian pathogen.
- Understanding M. gallisepticum's virulence factors is crucial for disease control.
Purpose of the Study:
- To investigate the growth-dependent haemagglutination capacity of M. gallisepticum.
- To characterize the intracellular structures and adhesins of M. gallisepticum.
Main Methods:
- Monitoring M. gallisepticum growth and haemagglutination.
- Utilizing Triton-X100 to reveal intracellular filamentous structures.
- Partial purification of adhesins using sialoglycopeptide conjugated Sepharose-4B.
Main Results:
- Maximal haemagglutination potential observed in M. gallisepticum cells grown for approximately 22 hours.
- A Triton shell-like intracellular filamentous structure was identified.
- A primary adhesin polypeptide of approximately 75,000 molecular weight was purified.
Conclusions:
- M. gallisepticum exhibits optimal haemagglutination at a specific growth stage.
- The identified adhesin is a key component for M. gallisepticum attachment and potential virulence.