Vitamin B12 biosynthesis of Cetobacterium ceti isolated from the intestinal content of captive common bottlenose dolphins (Tursiops truncatus)

Genus Cetobacterium is a common gastrointestinal bacterium in dolphins and includes two species: C. somerae and C. ceti. While the former produces vitamin B12, the production ability of the latter remains unknown. The goal of this project is to isolate C. ceti from dolphins and reveal its ability to biosynthesize vitamin B12.