Klebsiella pneumoniae strain NCTC13443

Klebsiella pneumoniae strain NCTC13443 is a Gram-negative, rod-shaped bacterium that exhibits a facultative anaerobic metabolism as a chemoheterotroph, thriving optimally at 37°C within a mesophilic temperature range. This strain is characterized by its ability to exist in various cell arrangements, including singles, pairs, and chains, and possesses flagella that enable mobility. K. pneumoniae strain NCTC13443 is notably associated with a wide range of hosts, including Homo sapiens, Gallus gallus, and various other metazoans and vertebrates. Its biotic relationship is classified as free-living, indicating its capacity to thrive independently of a specific host. However, this strain is also recognized for its pathogenic potential in humans, implicated in numerous health effects such as bacteremia, urinary tract infections, pneumonia, and sepsis. The strain does not form spores and is classified as nonsporulating, which may influence its survival strategies in diverse environments. With a single replicon and a double membrane structure, K. pneumoniae maintains a complex cellular organization that contributes to its adaptability. Ecologically, the presence of K. pneumoniae in various hosts underscores its role as an opportunistic pathogen, particularly in immunocompromised individuals. The strain's capacity to cause a wide array of infections highlights the importance of understanding its epidemiology and pathogenic mechanisms to mitigate its impact on human health.