Fig. 1From: Molecular genetic approaches to decrease the uncontrolled misincorporation of non-canonical branched chain amino acids into recombinant mini-proinsulin expressed in Escherichia coliSchematic representation of the BCAA biosynthetic pathway. Molecular structure of canonical BCAAs appear in blue while non-canonical BCAAs are shown in red. The corresponding canonical/non-canonical amino acid pairs are framed in the same color, e.g. pair leucine/norvaline is framed in yellow. See main text for detailed description. Adapted from Reitz et al. [24]Back to article page