Fig. 3: Metabolic schemes of potential phototrophic Myxococcota.

Colored parts in snowflake indicate the presence/absence of metabolic pathways and proteins for representative genome of each Myxococcota family. Half-filled parts in snowflake indicate the absence of proteins in the representative genome but present in other genomes from the same family. Gray color denotes the pathway or protein is absent in all genomes of this family. Representative genome of the family Nannocystaceae contains complete CBB cycle. Representative genomes of the families Myxococcaceae and Ca. Kuafubacteriaceae contain near complete CBB cycle with key enzymes, and sole missing enzymes can be identified in other genomes from corresponding family. The following metabolic pathways were used in the figure: bacteriochlorophyll synthesis pathway; TCA cycle, citrate cycle; glycolysis pathway; CBB cycle, Calvin-Benson-Bassham cycle; EMC, ethylmalonyl-CoA pathway; assimilatory sulfate reduction; dissimilatory nitrate reduction; carotenoid synthesis pathways, e.g., spheroidene pathway, astaxanthin biosynthesis pathway, and spirilloxanthin pathway. Several marker proteins were also included in the figure, e.g., proteorhodopsin; PufLM, photosynthetic reaction center subunits; form I RuBisCO, ribulose-1,5-bisphosphate carboxylase/oxygenase. Detailed information for representative MAGs is provided in Supplementary Data 2.