>tr|A0A656YD30|A0A656YD30_9LACO Small ribosomal subunit protein bS21 OS=Lactobacillus kefiranofaciens subsp. kefiranofaciens DSM 5016 = JCM 6985 GN=rpsU MAKTIVHENESIDDALRRFKRSVSRSGTLQEYRKREFYEKPSVRRKLKSEAARKRRHY