Bacteroides fragilis str. J-143-4

Bacteroides fragilis str. J-143-4 is a Gram-negative, rod-shaped bacterium classified as a chemoorganotroph, utilizing organic compounds as its energy source. This species is an anaerobe, thriving in environments devoid of oxygen, which is typical for many members of the Bacteroides genus. It is characterized by its single-cell arrangement, lacking mobility, as indicated by its absence of flagella, despite their presence in some other strains. The optimal growth temperature for Bacteroides fragilis str. J-143-4 is 37°C, placing it within the mesophilic temperature range, which is conducive to human and animal host environments. This bacterium has a biotic relationship that is categorized as free-living, suggesting its role in various ecological contexts, potentially including gut microbiota. With a single replicon and a double membrane structure, Bacteroides fragilis str. J-143-4 is representative of the complexity found within Gram-negative organisms. The accession number JGDH00000000.1 provides a reference for genomic information. Ecologically, Bacteroides fragilis species, including strain J-143-4, are significant members of the gut microbiome, contributing to nutrient metabolism and the maintenance of intestinal health. Their ability to thrive in anaerobic conditions and their role as chemoorganotrophs highlight their importance in organic matter decomposition and nutrient cycling within host-associated environments.