CooT is an accessory protein required for maturation of Carbon Monoxide Dehydrogenase (CODH). It is a member of a Ni(ii)-binding protein family, linked to anaerobic metabolism in bacteria and archaea, and in most cases to the presence of CODH. Structure analysis indicates that it is a homodimer featuring a fold that resembles an Sm-like domain [1].

1: The CO dehydrogenase accessory protein CooT is a novel nickel-binding protein. Timm J, Brochier-Armanet C, Perard J, Zambelli B, Ollagnier-de-Choudens S, Ciurli S, Cavazza C; Metallomics. 2017;9:575-583. PMID:28447092