>tr|A0A6P2EX17|A0A6P2EX17_9BURK Small ribosomal subunit protein bS21 OS=Variovorax sp. PBS-H4 GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY