Methanobrevibacter smithii CAG:186 str. MGS:186

Methanobrevibacter smithii CAG:186 str. MGS:186 is a Gram-positive, anaerobic microbe characterized by its rod shape and unique cellular arrangement, which typically occurs in pairs or chains. This organism is classified as a lithotroph, indicating that it derives energy from inorganic compounds, a trait that is particularly significant for its ecological role in various habitats. The optimal growth temperature for M. smithii CAG:186 is 37°C, placing it within the mesophilic temperature range. This temperature preference suggests a potential association with warm-blooded hosts, where it may thrive in the gastrointestinal tract. It possesses a single membrane and replicon, which is indicative of its streamlined genomic structure typical of many archaea. M. smithii CAG:186 is a free-living organism, which allows it to exist independently in multiple habitats. Its inability to move suggests a reliance on diffusion or other methods for nutrient acquisition and interaction with its environment. The organism's anaerobic nature aligns with its role in environments devoid of oxygen, such as the human gut, where it contributes to the complex microbial ecosystem. The presence of M. smithii in various biotic relationships highlights its significance in microbial communities, particularly in the context of methanogenesis in the intestines of humans and other animals. This process is vital for the digestion of complex carbohydrates and impacts overall gut health and metabolism. The organism's specific adaptations to anaerobic, mesophilic conditions and its energy acquisition strategies underscore its ecological importance in maintaining microbial balance within its habitats.