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Protein‐Based Models of Nickel Metalloenzymes

Nickel‐containing metalloenzymes are highly relevant in the context of biological energy conversion reactions. Of particular interest to our group is the carbon monoxide dehydrogenase/acetyl coenzyme A synthase (CODH/ACS) enzyme, which is responsible for the synthesis of acetyl‐CoA from CO2. This metabolic pathway is one of the oldest mechanisms by which cells convert inorganic carbon into biomass and has been implicated in the chemoautotrophic origin of life theory. However, due to the significant complexity and fragility of the native CODH/ACS complex, the mechanistic details underlying these reactions remain poorly understood.