Streptococcus anginosus strain OUP21

Streptococcus anginosus strain OUP21 is a Gram-positive, nonsporulating coccus that exhibits facultative anaerobic metabolism and is classified as a chemoheterotroph. This strain thrives optimally at a temperature of 37.0°C, which aligns closely with the average human body temperature, suggesting its adaptation to a host-associated environment. As part of its habitat, S. anginosus strain OUP21 is typically found in the gut of hosts, where it may play a role in the complex microbial community. The facultative anaerobic nature of this strain allows it to survive and proliferate under both aerobic and anaerobic conditions, providing it with versatility in fluctuating gut oxygen levels. The utilization of organic compounds as an energy source indicates its dependence on the host’s metabolic byproducts, which may facilitate symbiotic relationships within the gut microbiota. This strain's presence in the host gut microbiome could contribute to the overall microbial diversity and metabolic functions essential for maintaining gut health. Further understanding of its ecological role may reveal insights into its interactions with other gut microbes and its potential influence on host metabolism and immune responses.