Organization of lactate utilization loci observed in (a)
A. soehngenii
and (b)
C. catus
and other previously described lactate-utilizing bacteria. The black line in the A. propionicum lap cluster indicates that lapF gene is present in a different region of the genome. Lactate permease (Lperm), NAD-independent d-lactate dehydrogenase (d-iLDH), electron transfer flavoprotein (ETFα and β), acyl-CoA dehydrogenase (ACoAD), lactate racemase (Lrace), lactate operon transcriptional regulator (Regulator) propionyl-CoA transferase (PCoAT), lactoyl CoA epimerase (LCoAE), lactoyl-CoA transferase (LCoAD, act, α and β). Expanded to more lactate-utilizing bacteria genomes in Tables S13 and S14.