Enterococcus faecalis strain AR99-84

Enterococcus faecalis strain AR99-84 is a Gram-positive, cocci-shaped bacterium that operates as a facultative anaerobe, allowing it to thrive in various oxygen conditions. It is classified as a chemoorganotroph, utilizing organic compounds for energy. This strain is mesophilic, with an optimal growth temperature of 37°C, which is consistent with human body temperature. E. faecalis strain AR99-84 is non-motile and does not possess flagella, suggesting a reliance on external factors for dispersion and colonization. This strain is free-living and has a single membrane, indicating a simplified cell structure. It is capable of inhabiting multiple environments, including those associated with various hosts such as humans (Homo sapiens), domestic animals (e.g., Gallus gallus, Bos, Sus scrofa, Canis lupus familiaris, Felis catus), and aquatic species (e.g., Lutjanus russellii, Danio rerio), as well as Metazoa and marine mammals (Phocoena phocoena). E. faecalis is noted for its pathogenicity in humans, associated with a range of serious health conditions, including bacteremia, urinary tract infections (UTIs), endocarditis, and meningitis. Given its role in nosocomial infections and its ability to cause infections in various body sites, this strain underscores the importance of monitoring Enterococcus species in clinical settings. The extensive range of hosts and the variety of infections it can cause highlight the bacterium’s ecological versatility and its potential impact on both human and animal health.