Figure 2From: Controlling heterologous gene expression in yeast cell factories on different carbon substrates and across the diauxic shift: a comparison of yeast promoter activitiesPromoter performance over the diauxic shift: a cell growth and pH of the reference strain ILHA GH4; b the profile of extracellular metabolites. c the fluorescence of GFP controlled by promoters classically considered to be “constitutive”; d the fluorescence of GFP controlled by low-glucose-inducible promoters. The vertical dash lines are at 8, 12 and 16 h. The auto-fluorescence was determined from the reference strain in parallel. The medium was buffered with 100 mM MES. Mean values ± standard deviations are shown from duplicate cultivations.Back to article page