Figure 3From: Rational selection and engineering of exogenous principal sigma factor (σHrdB) to increase teicoplanin production in an industrial strain of Actinoplanes teichomyceticus Screening of teicoplanin overproduction recombinants harboring evolved mutant hrdB gene cultured in flasks. All samples were measured in duplicate. Error bars indicated standard deviations. The reference strains were O (L-27), H (L-27∷pGH112-PR), A (L-27∷AmhrdB), M (L-27∷MahrdB) and S (L-27∷SahrdB).Back to article page