>sp|P0AG49|RL21_ECO57 Large ribosomal subunit protein bL21 OS=Escherichia coli O157:H7 GN=rplU MYAVFQSGGKQHRVSEGQTVRLEKLDIATGETVEFAEVLMIANGEEVKIGVPFVDGGVIK AEVVAHGRGEKVKIVKFRRRKHYRKQQGHRQWFTDVKITGISA