Fig. 1.

β subunits of AMPK enzymes in different species. A schematic representation of the β subunits present in 4 fungal species as well as in human, insect and plant species are shown. The number of β subunits in each species, their amino acid length, accession number and the position of the carbohydrate binding module (CBM) and the C-terminal α-γ interaction domain (AG) are shown. Drosophila and Arabidopsis generate β subunit diversity by alternative splicing to include an additional exon (open box).