>tr|A0A2R3Q8V7|A0A2R3Q8V7_9BURK Small ribosomal subunit protein bS21 OS=Melaminivora suipulveris GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY