Fig. 4From: Engineering the Calvin–Benson–Bassham cycle and hydrogen utilization pathway of Ralstonia eutropha for improved autotrophic growth and polyhydroxybutyrate productionAutotrophic growth status of R. eutropha C5 strains with chromosomally upregulated expression of SH and MBH hydrogenases. a Promoter modification of the MBH gene cluster by replacing the native promoter with artificial promoters of different intensity; b promoter modulation of the MBH gene cluster, the SH gene cluster, or both SH gene clusters simultaneously. C5 is the control strain for each experiment. The values and error bars represent the means and SD of triplicate experimentsBack to article page