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Increased heterogeneity of OPG molecules in a tatB mutant or after arginine replacement in the OpgD signal sequence: DEAE-Sephacel anion-exchange column chromatography profiles of d-[U-14C]glucose-labeled OPGs from strains NFB4516 (tatB::kan) (A), NFB1655 (mdoD218::cml [pNF1092, R3K and R4K]) (B), and NFB1653 (mdoD218::cml [pNF1091, R4K and R5K]) (C). The experimental conditions were the same as those described in the legend to Fig. 3.
