Methanocaldococcus jannaschii DSM 2661

Methanocaldococcus jannaschii DSM 2661 is a hyperthermophilic, anaerobic, Gram-negative archaeon primarily found in aquatic habitats. This organism exhibits a cocci shape and has a single membrane structure. Notably, it does not possess mobility, as it lacks flagella despite their presence being noted in its classification. As a lithotroph, M. jannaschii utilizes inorganic compounds as an energy source, allowing it to thrive in extreme environments, with an optimal growth temperature of 85°C. It is characterized by having one replicon and is nonsporulating, indicating that it does not form spores under adverse conditions. M. jannaschii is classified as free-living and does not exhibit pathogenicity, making it a non-threatening organism in its natural habitat. The genome of M. jannaschii can be referenced with the accession number NC_001732.1, which provides a basis for further genetic and metabolic studies. The ecological role of Methanocaldococcus jannaschii is significant as it participates in the biogeochemical cycling of methane in high-temperature aquatic environments. Its ability to utilize inorganic substrates for energy contributes to the microbial diversity and metabolic processes in extreme ecosystems, highlighting the adaptability of life forms in harsh conditions. This adaptability underscores the potential for biotechnological applications, particularly in bioenergy and bioremediation, where extremophiles play a critical role.