Clostridium perfringens--specific lysin

Area of Science:

• Microbiology
• Bacteriology
• Enzymology

Background:

• Clostridium perfringens is an important bacterial pathogen.
• Bacteriophages and their derived lysins are explored for antimicrobial applications.

Purpose of the Study:

• To characterize a lytic agent derived from Clostridium perfringens strain KZ219.
• To determine the spectrum of activity and optimal conditions for this lysin.

Main Methods:

• Induction of a bacterial lysate from C. perfringens using mitomycin C.
• Testing the lytic activity of the lysate against various C. perfringens strains and other clostridial species.
• Assessing the effect of pH, proteolytic enzymes, and heat on lysin activity.

Main Results:

• The lysate was lytic to 50 strains of C. perfringens (types A-E) and 3 strains of C. plagarum.
• The lysin showed limited activity against only 2 out of 87 strains from 51 other clostridial species.
• Optimal lytic activity occurred at pH 5.5.
• Activity was significantly reduced by proteolytic enzymes and heat (60°C for 5 min).

Conclusions:

• The induced lysate contains a specific lysin with potent activity against C. perfringens.
• This lysin exhibits a narrow spectrum of activity, primarily targeting C. perfringens and closely related species.
• The lytic agent's sensitivity to enzymes and heat suggests a protein-based nature.