Figure 6From: Molecular evolution of B6 enzymes: Binding of pyridoxal-5'-phosphate and Lys41Arg substitution turn ribonuclease A into a model B6 protoenzymeStereo cartoon representation of RNase(K41R)-PLP. The cofactor and selected binding residues appear in stick mode, in green and atom colors. His119 is shown in two alternative conformations, which are also seen in the template structure [24].Back to article page