Fig. 4From: Direct RBS Engineering of the biosynthetic gene cluster for efficient productivity of violaceins in E. coliThe phenotypes of RBS mutants of violaceins gene cluster compared with the starting strain E. coli BL21(DE3) (Vio12472) on the solid plate of LB medium without IPTG inducer used. The cultivation condition: 37 ā for overnight (about 12ā14Ā h)Back to article page