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Serine resistance of the thrR deletion mutant and the ilvA overexpression strain. The growth of the wild type strain 168 and the mutant strains BKE27910 (thrR), GP1886 (ybeC), GP2970 (Suppressor with (yokD‐thyB) duplication) and the wild type 168 with the plasmid pGP2289 (ilvA overexpression) was compared on C‐Glc minimal medium plates (10‐fold serial dilution) containing 244 μM or 1 mM serine. The plates were incubated for 48 h at 37°C.
