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Keywords: Human-insulin-hexamer-3D-ribbons.png Ribbon diagram of the 2-Zn insulin hexamer The insulin monomer is the active hormone but the hexamer is the storage form Each of the 6 monomers is shown in a different color and the 6 histidine side-chains that bind the hexamer-stabilizing zincs are detailed as stick-figures The spirals are alpha helices and the arrows are beta strands own Benjah-bmm27 Benjah-bmm27 Insulin Ribbon diagrams Hexamers |