>sp|Q0I801|RL21_SYNS3 Large ribosomal subunit protein bL21 OS=Synechococcus sp. GN=rplU MAETSSSSSQTTPETGTYAIVEASGQQFWVQPNRYYDLDRLHADVDAKITLDKVLLVKNG DAATIGKPYVQGASVELKVMAHRRGQKVIVYKMRPKKKTRRKNGHRQELTRVMVESISVG GKAIS