Bifidobacterium longum subsp. longum strain CCUG30698

Bifidobacterium longum subsp. longum strain CCUG30698 is a Gram-positive, anaerobic rod-shaped bacterium that typically exists in host-associated environments. This strain is characterized by its arrangement in clusters, pairs, and singles, and it is non-motile, lacking flagella despite their presence in some related species. B. longum subsp. longum strain CCUG30698 thrives optimally at 37°C, categorizing it as mesophilic with a temperature range suitable for growth in warm-blooded hosts. This strain is free-living and has been found in a variety of hosts, including Homo sapiens, Metazoa, Sus scrofa, Insecta, Primates, Mammalia, and Vertebrata. Despite its presence in these diverse organisms, it is classified as non-pathogenic, with potential health effects noted as bacteraemia, indicating its presence in the bloodstream under certain conditions. Importantly, the strain is nonsporulating and possesses a single membrane and one replicon, suggesting a relatively simple cellular structure compared to more complex bacteria. The ecological role of Bifidobacterium longum subsp. longum strain CCUG30698 in the gut microbiome is significant, as it contributes to maintaining gut health while being associated with various hosts. Its non-pathogenic nature suggests a symbiotic relationship with humans and other animals, potentially aiding in digestion and influencing immune responses. The presence of this strain across multiple host species highlights its adaptability and importance in microbial ecology.