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[Bacterial lysis by lysozyme]
Bollettino Dell'Istituto Sieroterapico Milanese
|January 1, 1986
Abstract:
We confirmed the previous reports of Fleming, Nakamura et al. on the inability of lysozyme to lyse Micrococcus lysodeikticus cells at an acidic pH (3.0 - 3.5). In these conditions, lysozyme binds to the mucopolysaccharides of the cell wall without showing any lytic activity; lysis occurs at very high rate when pH is raised at neutral values by adding alkaline solutions. Our results were obtained by monitoring bacterial cultures both in aqueous solutions and on agar plates.
Insights
Lysozyme does not lyse Micrococcus lysodeikticus cells in acidic conditions (pH 3.0-3.5). Lysis occurs rapidly when the pH is neutralized, confirming previous findings on enzyme activity and bacterial cell walls.
Area of Science:
- Microbiology
- Biochemistry
Context:
- Lysozyme is an enzyme known for its antibacterial properties.
- Micrococcus lysodeikticus is a bacterium with a complex cell wall structure.
Purpose:
- To investigate the lytic activity of lysozyme on Micrococcus lysodeikticus at acidic pH.
- To confirm previous reports on the pH-dependent activity of lysozyme.
Summary:
- Lysozyme binds to Micrococcus lysodeikticus cell walls at acidic pH (3.0-3.5) but exhibits no lytic activity.
- Bacterial lysis is observed at a high rate when the pH is adjusted to neutral values using alkaline solutions.
- Experiments were conducted using both aqueous solutions and agar plate cultures to monitor bacterial growth and lysis.
Impact:
- Provides a clear understanding of the optimal conditions for lysozyme activity.
- Highlights the importance of pH in enzymatic degradation of bacterial cell walls.
- Contributes to the knowledge base for potential applications of lysozyme in microbiology and biotechnology.