Figure 6

End products of C. stercorarium DSM8532^T. A. Gas (top) and liquid (bottom) end products on cellobiose, xylose and xylan at mid-exponential phase (12 h anaerobic culture at 60°C). Mean and standard deviation of 25 replicates. B. Hypothetical alternatives to transaldolase for S-7P degradation in C. stercorarium DSM8532^T. S-7P may be phosphorylated by one of three phosphofructokinases (pfk) and subsequently cleaved to E-4P and DHA-P by fructose bisphosphate aldolase (fba). Alternatively, S-7P may be cleaved to PEP and E-4P by 3-deoxy-D-arabinoheptulosonate-7-phosphate synthase (pda), an enzyme usually active in creating an S-7P-like molecule from PEP/E-4P in the shikimate pathway.