6.2.1.45	Mg2+	required	733043, 733442, 733532, 733931, 734395, 735041, 735079, 744190, 744237, 744655, 745858, 745863, 745952, 760342, 760825	
6.2.1.45	Zinc	isoform UBA5 maintains a zinc-binding site that is coordinated by four cysteines with tetrahedral geometry	709113