Bifidobacterium longum subsp. infantis 157F

Bifidobacterium longum subsp. infantis 157F is a Gram-positive, non-motile rod that typically exists in host-associated environments, specifically within the gastrointestinal tract of infants. This strain is classified as an anaerobe, thriving in oxygen-depleted conditions, which is characteristic of the gut microbiome. It does not form spores, indicating that it relies on consistent environmental conditions to survive and reproduce. The cell arrangement of Bifidobacterium longum subsp. infantis 157F can be observed in clusters, pairs, and singles, showcasing its social interaction within microbial communities. It has a mesophilic temperature range, with an optimal growth temperature of 37°C, aligning with the normal body temperature of its host. Notably, this strain contains two replicons and has a single membrane structure. Bifidobacterium longum subsp. infantis 157F is recognized for its free-living biotic relationship and is not associated with pathogenicity, making it a beneficial member of the gut microbiota. The presence of flagella suggests some level of motility, although it does not actively move, which is consistent with its adapted lifestyle in a stable environment. Overall, the characteristics of Bifidobacterium longum subsp. infantis 157F highlight its role in the gut microbiome as a non-pathogenic, beneficial microorganism that may contribute to the health of its host through various metabolic activities and interactions with other gut bacteria.