>tr|A0A3L9YLG7|A0A3L9YLG7_9BURK Small ribosomal subunit protein bS21 OS=Acidovorax sp. 100 GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY