Figure 1. Carbon monoxide (CO) metabolisms and the Wood–Ljungdahl pathway.
( A) Potential fates of CO in microbial physiologies. ( B) Wood–Ljungdahl pathway. The carbonyl pathway is shown in pink, and the role of the CODH complex is highlighted. The generalized methyl branch of the pathway used in acetogenic bacteria is shown in blue. The generalized methyl branch of the pathway used in methanogenic archaea is shown in green.