>tr|A0A2R7PXS5|A0A2R7PXS5_9GAMM Small ribosomal subunit protein bS21 OS=Aeromonas sp. HMWF015 GN=rpsU MPVIKVRENEPFDVALRRFKRSCEKAGILSEVRSREFYEKPTTIRKRAKASAVKRHAKKL SRENARRIRLY