>tr|A0A1I5NF42|A0A1I5NF42_9BURK Small ribosomal subunit protein bS21 OS=Variovorax sp. 770b2 GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY