Bifidobacterium longum strain 105-A

Bifidobacterium longum strain 105-A is a non-pathogenic, Gram-positive bacterium that is predominantly found in host-associated environments. This species exhibits a rod shape and typically arranges itself in clusters, pairs, or as single cells. It is classified as an anaerobe, thriving in environments devoid of oxygen, with an optimal growth temperature of 37°C, placing it within the mesophilic temperature range. This strain does not possess mobility, as it lacks flagella, and is non-sporulating, indicating that it does not form spores as a means of survival under adverse conditions. Bifidobacterium longum strain 105-A has a single replicon and a single membrane structure, characteristics that are typical of many bacteria within its genus. B. longum strain 105-A has a wide range of hosts, including Homo sapiens (humans), various Metazoa, Sus scrofa (domestic pigs), Insecta (insects), Primates, Mammalia, and Vertebrata, highlighting its adaptability across different biological systems. While it can be associated with bacteraemia, it is important to note its non-pathogenic nature in healthy individuals. The presence of Bifidobacterium longum strain 105-A in diverse host organisms suggests a significant role in the microbiota and potential implications for gut health and immune function. Its ability to thrive in anaerobic conditions while interacting with a variety of hosts underscores its ecological importance in maintaining microbial diversity and stability within various ecosystems.