FIG. 1.
Clusters of genes encoding reactions of the H4MPT-linked C1 transfer pathway in Bacteria. Genes for C1 transfer reactions are shown in red; previously characterized genes for cofactor biosynthesis or not-yet-identified functions are shown in yellow. Genes with representatives mutated in the present study are shown in blue (C1-negative phenotype) or purple (C1-positive phenotype). Genes not involved in this study are left blank. Genes not contiguous on chromosomes are separated by double lines.