>tr|A0A3G2IED4|A0A3G2IED4_9ENTR Small ribosomal subunit protein bS21 OS=Buttiauxella sp. 3AFRM03 GN=rpsU MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKL ARENARRTRLY