Streptococcus sanguinis strain NCTC11086

Streptococcus sanguinis strain NCTC11086 is a Gram-positive, cocci-shaped bacterium that typically forms chains or pairs. As a facultative anaerobe, it can thrive in both aerobic and anaerobic environments, though it is primarily associated with host organisms. This strain is non-motile and lacks flagella, indicating that it does not have the ability to move independently. S. sanguinis is mesophilic, meaning it grows best at moderate temperatures, which are typically found in the human body, its primary habitat. This strain is notable for its biotic relationship as a free-living organism, though it primarily inhabits the oral cavity and can be found in hosts such as Homo sapiens (humans) and Oryctolagus cuniculus (European rabbits). Clinically, S. sanguinis has been implicated in various health conditions, including bacteremia, endocarditis, meningitis, and specifically infective endocarditis (IE). These associations highlight its pathogenic potential in humans, particularly in individuals with predisposing factors for heart infections. The presence of a single membrane and one replicon suggests a relatively simple cellular structure, which is typical for many bacteria. Understanding the ecological role of S. sanguinis is crucial, as it is part of the normal oral microbiota but can become pathogenic under certain conditions, emphasizing the delicate balance of microbial communities in human health.