Shigella flexneri 5a str. M90T

Shigella flexneri 5a str. M90T is a Gram-negative, rod-shaped bacterium that is associated with host organisms. It is classified as a chemoorganotroph, indicating that it derives energy from the oxidation of organic compounds. This bacterium exhibits a facultative oxygen requirement, allowing it to thrive in both aerobic and anaerobic environments. The cell arrangement of S. flexneri 5a str. M90T typically occurs in pairs or singles, and it possesses flagella, which contributes to its mobility. The optimal growth temperature for this mesophilic organism is around 37°C, which aligns with the typical human body temperature, further underscoring its association with host organisms. S. flexneri 5a str. M90T has two replicons, which are likely indicative of its genetic complexity and adaptability. It features two membranes, characteristic of Gram-negative bacteria, and it does not undergo sporulation, indicating a reliance on its host environment for survival and replication. The biotic relationship of S. flexneri 5a str. M90T is classified as free-living, suggesting that it can exist independently but may also engage with host organisms. This interplay emphasizes its role as a pathogen, as it can cause shigellosis in humans. In conclusion, the traits of S. flexneri 5a str. M90T highlight its adaptation to a host-associated lifestyle, where its mobility, energy acquisition methods, and optimal growth conditions facilitate its survival and pathogenicity in human environments.