2.7.1.74	Ca2+	about 55% as efficient as Mg2+	641931	
2.7.1.74	Ca2+	activation	641929, 641930, 641931, 641934, 641936, 641942	
2.7.1.74	Ca2+	can replace Mn2+ or Mg2+ to some extent	641929, 641930	
2.7.1.74	CdCl2	activation, in the absence of dithiothreitol	641931	
2.7.1.74	Co2+	about 30% as efficient as Mg2+	641942	
2.7.1.74	Co2+	about 40% as efficient as Mg2+	641931	
2.7.1.74	Co2+	activation	641931, 641936, 641942	
2.7.1.74	Fe2+	about 45% as efficient as Mg2+	641931	
2.7.1.74	Fe2+	about 60% as efficient as Mg2+	641942	
2.7.1.74	Fe2+	activation	641929, 641931, 641936, 641942