<div class='caption-body'><ul class ='image_legend_ul'>The deposited structure of PDB entry 5ar3 coloured by chain and viewed from the front. The entry contains: <li class ='image_legend_li'>2 copies of RECEPTOR-INTERACTING SERINE/THREONINE-PROTEIN KINASE 2</li><li class ='image_legend_li'>[]<ul class ='image_legend_ul'><li class ='image_legend_li'>2 copies of PHOSPHOMETHYLPHOSPHONIC ACID ADENYLATE ESTER</li> <li class ='image_legend_li'>2 copies of MAGNESIUM ION</li></ul></li></div>