Fig. 5.

(A) Presence and absence of genes underlying amino acid synthesis in the genomes of 231 bacterial isolates from bee guts. Colored boxes indicate the presence of all genes required for a pathway, and white boxes indicate the absence of genes for a pathway. (B) The TCA cycle with the ASCT pathway and the methionine synthesis pathway found in Snodgrassella strains and Bartonella strains, which incorporates acetyl-CoA and acetate rather than succinyl-CoA.