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accessory protein CooC1 The accessory protein CooC1, a nickel-binding ATPase, participates in the incorporation of nickel into the complex active site ([Ni-4Fe-4S]) cluster of Ni,Fe-dependent carbon monoxide dehydrogenase (CODH). CODH from Rhodospirillum rubrum catalyzes the reversible oxidation of CO to CO2. CODH contains a nickel-iron-sulfur cluster (C-center) and an iron-sulfur cluster (B-center). CO oxidation occurs at the C-center. Three accessory proteins encoded by cooCTJ genes are involved in nickel incorporation into a nickel site. CooC functions as a nickel insertase that mobilizes nickel to apoCODH using energy released from ATP hydrolysis. CooC is a homodimer and has NTPase activities. Mutation at the P-loop abolishs its function.
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Jiyao W et al.(2023). "The conserved domain database in 2023.",