>tr|A0A3V4QJD1|A0A3V4QJD1_SALET Small ribosomal subunit protein bS21 OS=Salmonella enterica subsp. enterica serovar Kottbus GN=rpsU MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKL ARENARRTRLY