>tr|S5BYF9|S5BYF9_9ALTE Large ribosomal subunit protein bL21 OS=Alteromonas mediterranea UM7 GN=rplU MYAVFQSGGKQHRVAEGQTVRLEKIEVAPGETVEFDKVLMVSNGDDVKIGTPIVAGGKVT AEVVTHGRGDKVKIVKFRRRKHSRKQAGHRQWFTEVKITGINA