>tr|C3SSG2|C3SSG2_ECOLX Large ribosomal subunit protein bL21 OS=Escherichia coli GN=rplU MYAVFQSGGKQHRVSEGQTVRLEKLDIATGETVEFAEVLMIANGEEVKIGVPFVDGGVIK AEVVAHGRGEKVKIVKFRRRKHYRKQQGHRQWFTDVKITGISA