>tr|A0A4U7BRG2|A0A4U7BRG2_9BACT Small ribosomal subunit protein bS21 OS=Campylobacter estrildidarum GN=rpsU MPGIKVHPNESFDEAYRKFKKQVDRNLVVTEVRARRFFEPMTEIRKKQKISARKKMLKRL YMLRRYESRL