Fig. 1.
Phylogenetic tree, based on amino acid sequence alignments, showing the relationship between GCLc subunits from a variety of divergent species. Multiple alignment of sequences (not shown) used in the phylogenetic analysis could be separated into 3 broad groups, designated as Ia, Ib, II and III. The cloned GCLc subunits included in the analysis reflect the specific comparative aims of the present study and are not exhaustive.