>tr|A0A1Z2LFK0|A0A1Z2LFK0_9GAMM Small ribosomal subunit protein bS21 OS=Stenotrophomonas sp. WZN-1 GN=rpsU MPSVKVRENEPFEFALRRFKRTCEKAGVLAETRKREFYEKPTQERKRKAAAAVKRQLRRS SRDVTKRQRLY