Escherichia coli strain K71-77

Escherichia coli strain K71-77 is a Gram-negative, rod-shaped bacterium with a facultative anaerobic metabolism, exhibiting mobility due to the presence of flagella. This strain is mesophilic, with an optimal growth temperature of 37°C. It typically exists in pairs or singles and is characterized by having two replicons and two membranes, indicating its complex genetic structure. K71-77 is associated with a wide range of hosts, including Homo sapiens, Gallus gallus, Bos taurus, and various other vertebrates, invertebrates, and plants. This diverse host range reflects its adaptability and potential for ecological versatility. As a free-living organism, it can thrive in various environments, often associated with its hosts. The strain is known to be pathogenic to humans, causing numerous health issues such as urinary tract infections (UTIs), gastrointestinal infections, neonatal meningitis, and septicemia. Other health effects include diarrhea, colibacillosis, and complications like hemolytic uremic syndrome (HUS). These associations underline the strain's significance in public health, particularly concerning foodborne illnesses and hospital-acquired infections. In summary, E. coli K71-77 exemplifies the complex interplay between microbial life and host organisms, highlighting its role in both health and disease. Its ability to thrive in diverse environments while being a significant pathogen showcases the ecological ramifications of microbial interactions, particularly in human health contexts.