>sp|B5F6A5|RS21_SALA4 Small ribosomal subunit protein bS21 OS=Salmonella agona (strain SL483) OX=454166 GN=rpsU PE=3 SV=1 MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKL ARENARRTRLY