Escherichia coli str. CRE1540

Escherichia coli strain CRE1540 is a Gram-negative, rod-shaped bacterium that typically exists in pairs or as single cells. This strain, like many members of the E. coli species, exhibits a facultative anaerobic metabolism, allowing it to thrive in both aerobic and anaerobic environments. E. coli CRE1540 has an optimal growth temperature of 37.0°C, which aligns with the typical physiological temperature of mammalian hosts, suggesting its adaptation to a host-associated habitat. The facultative anaerobic nature of E. coli CRE1540 indicates its versatility in utilizing oxygen for respiration when available, while also being capable of fermentation processes under anaerobic conditions. This metabolic flexibility is a significant trait that enables the organism to survive in various environments within the host, such as the gastrointestinal tract, where oxygen levels can fluctuate. Understanding the specialized traits of E. coli CRE1540 may provide insights into its role within the microbiome of its host, as well as its interactions with other microbial communities. The ability to grow in pairs or as single cells may reflect adaptive strategies for colonization and resource utilization in dynamic environments, further emphasizing the importance of studying strain-specific characteristics in understanding microbial ecology and physiology.