<div class='caption-body'><ul class ='image_legend_ul'>The deposited structure of PDB entry 4wsb coloured by chain and viewed from the front. The entry contains: <li class ='image_legend_li'>1 copy of Polymerase acidic protein</li><li class ='image_legend_li'>1 copy of RNA-directed RNA polymerase catalytic subunit</li><li class ='image_legend_li'>1 copy of Polymerase basic protein 2</li><li class ='image_legend_li'>1 copy of Influenza A polymerase vRNA promoter 3' end</li><li class ='image_legend_li'>1 copy of Influenza A polymerase vRNA promoter 5' end</li><li class ='image_legend_li'>2 non-polymeric entities<ul class ='image_legend_ul'><li class ='image_legend_li'>1 copy of ZINC ION</li><li class ='image_legend_li'>16 copies of PHOSPHATE ION</li></ul></li></div>