>tr|A0A420VLF9|A0A420VLF9_9BACT Small ribosomal subunit protein bS21 OS=Campylobacter sp. P255 GN=rpsU MPGIKVHPNESFDEAYRKFKKQVDRNLVVTEVRARRFFEPMTEIRKKQKISARKKMLKRL YMLRRYESRL