Abstract
Nucleoside triphosphates, important intermediates in oligosaccharide synthesis by glycosyltransferases, were generated from nucleoside monophosphates by E. coli BL21(DE3) which over-expresses polyphosphate kinase (PPK) or by Corynebacterium ammoniagenes ATCC 21264 using 1% (w/v) polyphosphate as a phosphate donor and a source of energy. Beads of calcium pectate gel were stable in polyphosphate reaction broth for 60 days after which the activity of PPK was 50% of its original value. This technique could be used for the large-scale synthesis of oligosaccharides.
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