Fig. 5

Schematic diagram of the Wood–Ljungdahl pathway and C2–C6 product biosynthetic pathway in C. carboxidivorans P7. Genes’ expression level of each enzyme/protein is represented in a heat map using the FPKMs. Each box represents the transcript of one time-point in triplicate. Among the encoding genes of each enzyme/protein, the high-expressed genes are indicated in red, low-expressed ones are indicated in blue, and medium-expressed ones are indicated in white. The full annotations of the corresponding enzymes/proteins and genes are given in Additional file 2: Table S3. The end-products of C2–C6 product biosynthetic pathway are in blue boxes. The solid black arrow indicates the defined reaction of the Wood–Ljungdahl pathway; the solid blue arrow indicates the defined reaction of the C2–C4 product biosynthetic pathway; the dotted blue arrow indicates the putative reaction of the C6 product biosynthetic pathway