>tr|A0A0Q4H1F7|A0A0Q4H1F7_9BURK Small ribosomal subunit protein bS21 OS=Xylophilus sp. Leaf220 GN=rpsU MTTIRVKENEPFDVALRRFKRTIEKLGLLTDLRAREFYEKPTAERKRKKAAAVKRHYKRV RSMQLPKKLY