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Thin-layer chromatographic analysis of OPGs extracted from NFB732 (mdoB, lanes 1 and 2) or NFB1864 (mdoB mdoC, lanes 3 and 4). Extracts were applied directly to thin-layer chromatography plates (lanes 1 and 3) or first subjected to mild alkali treatment to remove succinyl substituents (lanes 2 and 4).
