>tr|A0A4Q8PEM1|A0A4Q8PEM1_SALET Small ribosomal subunit protein bS21 OS=Salmonella enterica subsp. enterica serovar Brancaster GN=rpsU MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKL ARENARRTRLY