>tr|A0A2S4SKB5|A0A2S4SKB5_9ENTR Small ribosomal subunit protein bS21 OS=Enterobacter cloacae complex sp. ECNIH11 GN=rpsU MPVIKVRENEPFDVALRRFKRSCEKAGVLAEVRRREFYEKPTTERKRAKASAVKRHAKKL ARENARRTRLY