Lactococcus lactis subsp. lactis strain DPC6853

Lactococcus lactis subsp. lactis strain DPC6853 is a Gram-positive, cocci-shaped bacterium that typically organizes in chains. As a facultative anaerobe, it can thrive in both aerobic and anaerobic environments, although it is optimal at a temperature of 40°C, which places it within the mesophilic range. The organism is non-motile and does not possess flagella, indicating a lack of mobility. This strain has a single replicon and is characterized by a single membrane. It exists as a free-living organism and has a diverse range of hosts, including Homo sapiens, Bos taurus, and various other Metazoa and plant species such as Medicago sativa. This wide host range suggests that L. lactis subsp. lactis DPC6853 may play various ecological roles across different environments. While it is classified as non-pathogenic to humans, it has been associated with several health issues, including endocarditis, peritonitis, and hepatic abscesses. This dual nature highlights its potential as a beneficial microorganism in some contexts, while also indicating that under certain conditions, it may contribute to opportunistic infections. The ecological insight from the traits of L. lactis subsp. lactis DPC6853 underscores the complexity of microbial interactions and the importance of environmental factors in determining the roles of bacteria in both health and disease. The strain's capability to inhabit multiple environments and its relationships with various hosts reflect its adaptability and significance within the microbial community.