Draft Genome Sequence of Enterococcus faecalis DD14, a Bacteriocinogenic Lactic Acid Bacterium with Anti-Clostridium...

Area of Science:

• Microbiology
• Genomics
• Bacterial Genetics

Background:

• Enterococcus faecalis is a common bacterium found in the human gut microbiome.
• Neonatal gut microbiota plays a crucial role in infant health and development.
• Bacteriocins are antimicrobial peptides with potential therapeutic applications.

Purpose of the Study:

• To perform a draft genome sequencing of the Enterococcus faecalis DD14 strain.
• To investigate the antimicrobial properties of this strain.
• To identify genetic elements responsible for its antagonistic activity.

Main Methods:

• Isolation of Enterococcus faecalis DD14 from meconium of a healthy newborn.
• Whole-genome sequencing and assembly.
• Antimicrobial activity assays against Gram-positive bacteria.

Main Results:

• The draft genome sequence of Enterococcus faecalis DD14 is 2,893,365 bp with a 37.3% G+C content.
• The genome contains at least 2,755 coding sequences and 62 RNAs.
• The strain exhibits antagonism against Gram-positive bacteria via lactic acid and bacteriocin production.

Conclusions:

• The genome sequence provides a foundation for understanding the biology of Enterococcus faecalis DD14.
• The identified antimicrobial mechanisms highlight the strain's potential as a probiotic or source of novel antimicrobials.
• Further research can explore the therapeutic potential of its bacteriocin and lactic acid production.