Fusobacterium nucleatum

Fusobacterium nucleatum is a Gram-negative, non-sporulating rod-shaped bacterium commonly found in anaerobic environments, typically associated with host organisms. It primarily exists in pairs and is characterized by its lack of motility, despite possessing true flagella. This microbe is a chemoheterotroph, deriving energy from organic compounds, and thrives optimally at a temperature of 37°C, classifying it as mesophilic. Fusobacterium nucleatum is notable for its free-living biotic relationship within host-associated habitats, indicating a potential role in the microbiota of various animal species. The organism has two cellular membranes, a trait common among Gram-negative bacteria, and contains two replicons within its genome, which is cataloged under the accessions MLQO00000000.1 and PNHC00000000.1. Understanding the ecological role of Fusobacterium nucleatum is crucial, particularly in the context of its presence in the host microbiome, where it may influence health and disease states. The bacterium's association with animal hosts suggests an intricate relationship that may impact the overall microbial community and host interactions.