Escherichia coli O25b:H4

Escherichia coli O25b:H4 is a Gram-negative, rod-shaped bacterium that typically exists in pairs or as single cells. This strain is facultatively anaerobic, allowing it to thrive in both aerobic and anaerobic environments. E. coli O25b:H4 is commonly associated with host organisms, indicating a close relationship with its ecological niche. The optimal growth temperature for this strain is approximately 37.0°C, which corresponds to the body temperature of many warm-blooded hosts, further highlighting its host-associated nature. The facultative anaerobic metabolism of E. coli O25b:H4 enables it to adapt to varying oxygen levels, potentially facilitating its survival in diverse environments, such as the gastrointestinal tract of mammals. This adaptability may contribute to the bacterium's ability to persist in host-associated habitats despite fluctuating oxygen availability. Understanding the traits of E. coli O25b:H4, particularly its metabolic flexibility and temperature preference, can provide insights into its ecological roles and interactions within the microbiome of host organisms.