>sp|B7MBV5|RL21_ECO45 Large ribosomal subunit protein bL21 OS=Escherichia coli O45:K1 GN=rplU MYAVFQSGGKQHRVSEGQTVRLEKLDIATGETVEFAEVLMIANGEEVKIGVPFVDGGVIK AEVVAHGRGEKVKIVKFRRRKHYRKQQGHRQWFTDVKITGISA