>sp|A0L6F1|URE2_MAGMM Urease subunit beta OS=Magnetococcus marinus GN=ureB MIPGELFPAPGDIILNAGCETLTLTVANGGDRPIQVGSHYHFAETNPALQFDRQRARGYR LDIPAGTAVRFEPGQARDVTLVPYGGRRQVVGFNGLVNGQLED