>tr|A0A1H0R2T2|A0A1H0R2T2_9STRE Small ribosomal subunit protein bS21 OS=Streptococcus sp. NLAE-zl-C503 GN=rpsU MSKTVVRKNESLDDALRRFKRAVTKAGTLQETRKREFYEKPSVKRKRKSEAARKRKKF