Klebsiella variicola strain NCTC9177

Klebsiella variicola strain NCTC9177 is a Gram-negative, rod-shaped bacterium that is facultatively anaerobic, allowing it to thrive in various oxygen conditions. This strain exhibits a unique cell arrangement, forming chains, pairs, and singles, and possesses flagella, which grants it mobility. It is classified as mesophilic, with an optimal growth temperature of 37°C, making it well-suited for growth within the human body and other warm-blooded hosts. Klebsiella variicola is known to engage in symbiotic relationships with various hosts, including Homo sapiens, Metazoa, Ovis aries, Aporrectodea sp., and Metaphire sieboldi. While it plays a role in the microbiome of these organisms, it is also associated with health concerns, particularly in causing bloodstream and urinary tract infections in humans. This strain has a single replicon and is nonsporulating, indicating a stable genetic structure without the formation of spores for survival under adverse conditions. The presence of two membranes is typical of Gram-negative bacteria, contributing to its structural characteristics and interactions with the environment. In summary, Klebsiella variicola strain NCTC9177 exemplifies a versatile bacterium that occupies a significant ecological niche, maintaining symbiotic relationships while also posing risks to human health. Its adaptability to varied hosts and environments underscores the complexity of microbial interactions within ecosystems and the potential consequences of dysbiosis.