Figure 7. Effect of the chemical nature of amino acid residues located either at the N- or C-terminal end of dipeptides on the utilization by strains of the SBP penta mutant complemented with individual SBPs.

The numbers indicate dipeptides that enabled a more than 2-fold increase in respiratory activity of SBP mutant complemented with an individual SBPs compared to the respiratory activity of the mutant carrying an empty plasmid. The SBP penta mutant was able to utilize these dipeptides.