Bacteroides fragilis str. J-143-4

Bacteroides fragilis str. J-143-4 is a Gram-negative, rod-shaped anaerobic bacterium that primarily exists in a single-cell arrangement. This strain is adapted to a host-associated habitat, indicating its presence in various biological environments, likely within the gastrointestinal tract of mammals. As a chemoorganotroph, B. fragilis str. J-143-4 utilizes organic compounds as its energy source, reflecting its ability to thrive in nutrient-rich environments typically found in association with host organisms. The optimal growth temperature for this strain is approximately 37.0°C, which corresponds to the physiological temperature of warm-blooded hosts, further underscoring its adaptation to a host-associated lifestyle. B. fragilis is notable for its metabolic versatility, which enables it to exploit a range of organic substrates, contributing to its survival and colonization in the complex microbial communities of the gut. The ecological role of Bacteroides fragilis str. J-143-4 may extend beyond mere commensalism, as its metabolic activities can influence the host's nutrient absorption and immune responses. This interplay highlights the potential significance of this strain in maintaining gut homeostasis and its contributions to the overall microbiome dynamics. Understanding the specific traits of B. fragilis str. J-143-4 can enhance our knowledge of microbial interactions within host environments and their implications for health and disease.