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Growth of the B. subtilis wild-type strain and various mutants in the presence of methionine. Growth curves for strains 168 (•), BSIP1165 (yrhB::aphA3) (○), BSIP1304 (ΔcysK::spc) (▪), BFS2063 (ΔyrhA) (□), BSIP1870 (ΔyrhA ΔcysK::spc) (▴), or QB944 (cysE14) (▵) in the presence of 200 μM methionine. For strains BFS2063 and BSIP1870, 1 mM IPTG was added.
