>tr|A0A0Q6NIN4|A0A0Q6NIN4_9BURK Small ribosomal subunit protein bS21 OS=Variovorax sp. Root318D1 GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY