Escherichia coli O111:H- str. 11128

Escherichia coli O111:H- str. 11128 is a Gram-negative, rod-shaped bacterium that thrives optimally at mesophilic temperatures, classified as a facultative anaerobe and a chemoheterotroph. As a member of the diverse Escherichia genus, this strain is typically found in the intestines of warm-blooded organisms, but its presence can extend to various body sites across multiple species, including the gastrointestinal tract of humans and animals, as well as various environmental niches such as soil and water. The Gram-negative staining characteristic of E. coli O111:H- str. 11128 indicates the presence of an outer membrane composed of lipopolysaccharides, contributing to its pathogenic potential. The rod shape facilitates motility through the use of flagella, allowing the bacterium to navigate its environment effectively. As a mesophilic organism, it prefers moderate temperature ranges, roughly between 20°C and 45°C, making it well-suited for survival in warm-blooded hosts. Being a facultative anaerobe, E. coli O111:H- str. 11128 has the versatility to grow in both aerobic and anaerobic conditions, depending on the availability of oxygen. This adaptability enhances its survival in diverse environments. As a chemoheterotroph, it derives its energy from organic compounds, utilizing a variety of substrates for metabolism. This particular strain of E. coli is noteworthy due to its potential to cause foodborne illnesses, especially linked to undercooked beef and unpasteurized dairy products. Its pathogenicity can be attributed to various virulence factors, such as Shiga toxin production, which can lead to severe gastrointestinal disease and complications like hemolytic uremic syndrome (HUS). Understanding strains like E. coli O111:H- str. 11128 is crucial for public health and food safety initiatives, reflecting the importance of monitoring microbial threats in our food supply.