Fig. 4From: Bioenergetic constraints for conversion of syngas to biofuels in acetogenic bacteriaEthanol formation from acetyl-CoA. Acetyl-CoA is synthesized via the Wood–Ljungdahl pathway (WL pathway) and can be reduced to ethanol either by means of acetaldehyde dehydrogenase (AldDH) or by means of aldehyde:ferredoxin oxidoreductase (AOR)Back to article page