Figure 4
Schematic representation of photosynthetic genes in photosynthetic bacteria. Photosynthetic genes in Cfl. aurantiacus, Cba. tepidum (A), Rba. sphaeroidies, Rba. capsulatus, Rvi. gelatinosus, and Rsb. denitrificans (B), an operon consist of the puf genes (the L- and M-subunits of the reaction center and cytochrome c554), genes encoding two subunits of the B808-866 complex and two bacteriochlorophyll a biosynthesis enzymes (bchP and bchG) (i) and genes encoding bacteriochlorophyll c biosynthesis enzymes (bchU and bchK) and characterized and putative chlorosome proteins (csmA, csmM, csmN, csmP, csmY and csmO) (ii) (C). Genes are colored as listed: chlorosome proteins (csm) in red, chlorophyll biosynthesis (bch) in green, carotenoid biosynthesis (crt) in orange, reaction centers and light-harvesting complexes (puf and puh) in purple, regulatory proteins in blue (only in panel B), and uncharacterized and non-photosynthetic genes in white. All other gene colors are unique for clarity.