>tr|A0A2N2RGA2|A0A2N2RGA2_9PROT Small ribosomal subunit protein bS21 OS=Betaproteobacteria bacterium HGW-Betaproteobacteria-3 GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY