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Effects of EDTA and divalent cations on NodZ activity. Fucose transfer activity of NodZ was determined in the presence (gray bars) or in the absence (white bars) of the (GlcNAc)5 acceptor as described in Materials and Methods. EDTA or the different divalent cations were added at a final concentration of 10 mM. Each value above a bar indicates the percent enzyme activity relative to the control with no additive and is the average of at least three independent determinations.
