synthesis |
Escherichia coli is engineered to produce 1,3-propanediol from glycerol, an inexpensive carbon source. This is done by introducing a synthetic 1,3-propanediol production pathway in recombinant Escherichia coli consisting of glycerol dehydratase complex (dhaB123) and glycerol dehydratase reactivation factors (gdrAB) from Klebsiella pneumoniae and 1,3-propanediol oxidoreductase isoenzyme (yqhD) from Escherichia coli. When 10 mM succinate is added to the medium, the titer of 1,3-propanediol and the glycerol consumption increase to 9.9 and 23.84 g/l, respectively. In addition, the ratio of NADH to NAD+ increases by 43%. Succinate addition is a promising route for the biotechnological production of NADH-dependent microbial metabolites |
Klebsiella pneumoniae |