>sp|Q9Z3H5|RL21_SYNE7 Large ribosomal subunit protein bL21 OS=Synechococcus elongatus GN=rplU MAYAIIEASGKQLWVEPGRFYDLDRLDADLDQSLTLDKVLLVQDEGAPQIGQPYVAGATV QVTVLSHPRGRKVTVYKMKPKKKTRKKQGHRQDLTRVLVESITVGGKVLTANAADLPKSE ADIDAAG