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. 2019 Sep 30;116(42):21166–21175. doi: 10.1073/pnas.1913803116

Fig. 1.

Fig. 1.

CcoG protein and its characteristic features. The R. capsulatus CcoG protein is depicted with its 5 transmembrane helices, 2 conserved Cu-binding motifs (Cys110-XXX-Cys114) and (Cys217-XXX-Cys221), and 2 conserved [4Fe-4S] cluster-binding motifs (Cys264-XX-Cys267-XX-Cys270-XXX-Cys274) and (Cys288-XX-Cys291-XX-Cys294-XXX-Cys298). Its periplasmic C-terminal portion forms an Ig-like domain.