>sp|B2A6B3|RL21_NATTJ Large ribosomal subunit protein bL21 OS=Natranaerobius thermophilus GN=rplU MYAVIETGGKQYKVSEGDVLEIEKLSQETEEQVTFDKVLLVKDDENVKVGTPVLEEAQVE GTVLEHGKGEKVTVFKYKPKKNYRRKQGHRQPFSKVKIDKIKLNG