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Light-Driven CO₂ Reduction by Co-Cytochrome b ₅₆₂.

ABSTRACT: The current trend in atmospheric carbon dioxide concentrations is causing increasing concerns for its environmental impacts, and spurring the developments of sustainable methods to reduce CO₂ to usable molecules. We report the light-driven CO₂ reduction in water in mild conditions by artificial protein catalysts based on cytochrome b ₅₆₂ and incorporating cobalt protoporphyrin IX as cofactor. Incorporation into the protein scaffolds enhances the intrinsic reactivity of the cobalt porphyrin toward proton reduction and CO generation. Mutations around the binding site modulate the activity of the enzyme, pointing to the possibility of further improving catalytic activity through rational design or directed evolution.

SUBMITTER: Alcala-Torano R

PROVIDER: S-EPMC8082397 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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Light-Driven CO2 Reduction by Co-Cytochrome b 562.

Alcala-Torano Rafael R Halloran Nicholas N Gwerder Noah N Sommer Dayn J DJ Ghirlanda Giovanna G

Frontiers in molecular biosciences 20210415

The current trend in atmospheric carbon dioxide concentrations is causing increasing concerns for its environmental impacts, and spurring the developments of sustainable methods to reduce CO2 to usable molecules. We report the light-driven CO2 reduction in water in mild conditions by artificial protein catalysts based on cytochrome b 562 and incorporating cobalt protoporphyrin IX as cofactor. Incorporation into the protein scaffolds enhances the intrinsic ...[more]

PMID: 33937320

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