>tr|A0A2R7SM00|A0A2R7SM00_9BURK Small ribosomal subunit protein bS21 OS=Pelomonas sp. HMWF004 GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY