>tr|A0A7Y0PXJ2|A0A7Y0PXJ2_9CYAN Urease subunit beta OS=Prochlorococcus sp. P1361 GN=ureB MPPLIPGELIPEPGTLELNSNRPTLTLRVANSGDRPIQVGSHFHFFETNTALHFDRDAAR GHRLDIPAGTAIRFEPGDERDVRLVALAGHRKVFGFNGLVNGPLD