Fig. 2From: The sweet branch of metabolic engineering: cherry-picking the low-hanging sugary fruitsIllustration of a glycosyltransferase catalyzed reaction taking place inside a bacterial cell. Besides an exogenous carbon source in the synthesis of sugar nucleotide, UDP-Gal, an exogenous energy source and its conversion to cellular energy (such as ATP, UTP, etc.) is requiredBack to article page