Enzyme-catalyzed synthesis of carbohydrates: synthetic potential of transketolase
摘要:
The synthetic potential of yeast or spinach transketolases was studied, using hydroxypyruvate as a donor substrate and 31 aldehydes as acceptors. All of them react, including aromatic, heteroaromatic and alpha,beta unsaturated aldehydes.
Ketose 1-phosphates are obtained from aldehydes and dihydroxyacetone phosphate by enzymatic aldol addition, and from aldoses (or ketoses) by isomerization/phosphorylation. The microbial enzymes employed are readily available by overexpression.