Although of limited metabolic diversity, methanogenic archaea or methanogens possess
great phylogenetic and ecological diversity. Only three types of methanogenic pathways are …

Reasonable creation of renewable energy is being fervently debated. The biofuels,
produced from food crops are restricted in their capacity to accomplish biofuel generation …

Methane has been proposed as an exoplanet biosignature. Imminent observations with the
James Webb Space Telescope may enable methane detections on potentially habitable …

Hydrothermal fields on the prebiotic Earth are candidate environments for biogenesis. We
propose a model in which molecular systems driven by cycles of hydration and dehydration …

SUMMARY Riboflavin [7, 8-dimethyl-10-(1′-d-ribityl) isoalloxazine, vitamin B2] is an
obligatory component of human and animal diets, as it serves as the precursor of flavin …

Acetogens utilize the acetyl‐CoA Wood‐Ljungdahl pathway as a terminal electron‐
accepting, energy‐conserving, CO2‐fixing process. The decades of research to resolve the …

Highlights•The methanogens consist of the hydrogenotrophs and the methylotrophs.•The
methanogens are metabolically more versatile than previously appreciated.•Alternative …

Although the aceticlastic methanoarchaea Methanosarcina and Methanosaeta employ
different enzymes to catalyze the first step of aceticlastic methanogenesis, it has long been …

Deazaflavin cofactors enhance the metabolic flexibility of microorganisms by catalyzing a
wide range of challenging enzymatic redox reactions. While structurally similar to riboflavin …

Carbon monoxide can act as a substrate for different modes of fermentative anaerobic
metabolism. The trait of utilizing CO is spread among a diverse group of microorganisms …