File:The structure of the alpha2 hook of AMPK Fig4a.jpg

English: "Ribbons representation of the overlap of the γ subunit and hook regions from full-length α2/activator complex (coloured in pink and orange) and from the ΔCBM AMPK complex (coloured in grey), showing the close structural similarity of the hook region for α1 and α2 over the five strictly conserved residues. The two exchangeable AMP moieties are shown in stick representation (from the full-length structure) but the non-exchangeable AMP has been removed for clarity." Figure 4a from B.Xiao et al. "Structural basis of AMPK regulation by small molecule activators" Nature Communications 4 doi:10.1038/ncomms4017 . Image and description copied under CC-BY 3.0 licence.