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Time course of transglycosylation by PhNah20A (10 U·mL−1) with 100 mM NAG-oxazoline as donor and either 200 mM lactose (A) or d-galactose (B) as acceptor (see Section 3.8 for details). Chitooligosaccharides (M), lacto-N-triose II (LNT2) and lacto-N-biose (LNB) were used as references.
