Iron-Sulfur Proteins in Anaerobic Eukaryotes

摘要: The phylogeny and unexpected distribution of hydrogenase-related genes among extant organisms suggest an ancient crucial role for members this gene family in eukaryotes are consistent with hydrogen syntrophy based models eukaryogenesis. For the protists studied, available data a mitochondrial origin hydrogenosomes. But one needs to realize that enzymes need not necessarily be same as organellar structure. hydrogenosomes may have originated several times course evolution, lateral transfer from other or anaerobic bacteria. At present, lack well-supported sister group prevents discrimination between ideas presented syntrophic hypotheses. Furthermore, most parsimonious explanation these observations is many eukaryotes, such green algae, retained ancestral energy metabolic were recruitment during adaptation and, at least case, photosynthetic lifestyles, remarkable demonstration plasticity eukaryote molecular physiology.