>sp|Q7V3V3|URE2_PROMM Urease subunit beta OS=Prochlorococcus marinus (strain MIT 9313) OX=74547 GN=ureB PE=3 SV=1
MPPLIPGELIPEPGTLELNSNRPTLTLRVANSGDRPIQVGSHFHFFETNTALHFDRDAAR
GHRLDIPAGTAIRFEPGDERDVRLVALAGHRKVFGFNGLVNGPLD