Godfried D. Vogels , Jan T. Keltjens, Theo J. Hutten, Chris Van Der Drift
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A tentative scheme of methanogenesis from CO2 is presented. It involves the participation of methanopterin, coenzyme FA, coenzyme M and the activated form of coenzyme M. CO2 is bound to the enamine group of methanopterin and reduced to the formyl level by an intramolecular redox reaction. Coenzyme M is activated by binding to factor F430, a nickel-tetrapyrrole present in methylcoenzyme M reductase.
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