Bifidobacterium longum subsp. infantis strain Bi-26

Bifidobacterium longum subsp. infantis strain Bi-26 is a non-pathogenic, anaerobic bacterium that is part of the gut microbiota in Homo sapiens, particularly in infants. This strain is characterized as gram-positive and exhibits a rod-shaped morphology. The cells typically arrange themselves in clusters, pairs, or singles, reflecting their communal living strategy. As a mesophilic organism, Bifidobacterium longum subsp. infantis Bi-26 thrives optimally at a temperature of 37°C, which aligns with the average human body temperature. The strain has a single membrane and a singular replicon, indicating a relatively simple genetic structure. It lacks mobility, as it does not possess flagella, which is typical for many members of the Bifidobacterium genus. This strain's free-living biotic relationship suggests that, while it resides in the human gut, it does not rely exclusively on a host for survival. Instead, it plays a role in the gastrointestinal ecosystem, contributing to gut health. Bifidobacterium longum subsp. infantis Bi-26 is significant in the context of infant nutrition and health, as it aids in the digestion of human milk oligosaccharides and supports the development of a healthy gut microbiome. This highlights the strain's importance in maintaining the balance of gut microbiota and potentially enhancing immune function in its host. The accession number for this strain is NZ_CP054425.1.