Tags: Archaea.
Methanobrevibacter smithii is the predominant archaeon in the human gut. It plays an important role in the efficient digestion of polysaccharides (complex sugars) by consuming the end products of bacterial fermentation. Methanobrevibacter smithii is a single-celled microorganism from the Archaea domain. M. smithii is a methanogen and recycles the hydrogen in methane allowing for an increase in the extraction of energy from nutrients.