>sp|P94688|RL21_PROVB Large ribosomal subunit protein bL21 OS=Prosthecochloris vibrioformis GN=rplU MQALIEISDKQFLVQEGDKIFVPKQKAVAGDVIEVKSLMKVGQADSALSEGTAKVKVLDH VRDETIIVFRKKRRKRFQRRNGHRQHMTQVEVMSI