Glycerol utilization by “Ca. Pseudoramibacter fermentans.” (A) “Ca. Pseudoramibacter fermentans” contains genes for three glycerol utilization routes. Key enzymes in these pathways include glycerol kinase (GK), glycerol-3-phosphate dehydrogenase (G3PD), glycerol dehydrogenase (GDH), dihydroxyacetone kinase (DHAK), glycerol dehydratase (GDT), and propionaldehyde dehydrogenase (PAD). (B) Transcript abundance for glycerol transport and utilization. Subunits of a single enzyme complex are indicated in parentheses. “Prefed” represents the time point prior to feeding the reactor. Error bars show 95% confidence levels determined with CuffLinks.