>sp|A2BQW7|URE2_PROMS Urease subunit beta OS=Prochlorococcus marinus (strain AS9601) OX=146891 GN=ureB PE=3 SV=1
MSNLIPGEIIPEQGQIELNLSKQVKTVTVSNSGDRPVQVGSHYHFYEANKALIFDREITY
GMRLDIPAGTAIRFEPGDTTDVKLVPFSGLRNAYGFNSLVNGSLNS