>tr|W4SFM7|W4SFM7_9XANT Small ribosomal subunit protein bS21 OS=Xanthomonas arboricola pv. pruni MAFF 301420 GN=rpsU MPSVKVRENEPFEFALRRFKRTCEKAGVLAETRKREFYEKPTQERKRKAAAAVKRQLRRS SRDVTKRQRLY