>tr|A0A9X2Y277|A0A9X2Y277_YERPE Urease subunit beta OS=Yersinia pestis subsp. pestis GN=ureB MSAKKSTKDSKEQNTPLGGLVLAETPITFNENKPVTKVKVRNTGDRPIQVGSHFHFFEVN RALEFDRAAAYGKRLNISSTTAIRFEPGDETEVPLIPFGGKQTLYGFNNLVDGWTGEGVV PNSERPDKLAAIRLAAERGFKSSK