Extracellular nuclease in the genus Lactobacillus

Area of Science:

• Microbiology
• Enzymology

Background:

• Extracellular nucleases play roles in microbial ecology and genetic material accessibility.
• Understanding microbial enzyme production is crucial for biotechnological applications.

Purpose of the Study:

• To investigate the production of extracellular nucleases by specific bacterial species.
• To determine the substrate specificity of the identified nucleases.

Main Methods:

• Culturing of selected lactobacilli, Bacillus coagulans, and Sporolactobacillus inulinus strains.
• Assaying culture supernatants for nuclease activity against ribonucleic acid (RNA) and deoxyribonucleic acid (DNA).

Main Results:

• Multiple species and strains exhibited detectable extracellular nuclease activity.
• The produced nucleases demonstrated the ability to hydrolyze both RNA and DNA.

Conclusions:

• Lactobacilli, Bacillus coagulans, and Sporolactobacillus inulinus are sources of extracellular nucleases.
• These bacterial nucleases have the potential for applications in nucleic acid degradation.