title: Rare earth metal ions as substitutes for the calcium ion in Bacillus subtilis  -amylase.
mesh_terms: D000681:Amylases / Q000032:analysis / Q000037:antagonists & inhibitors; D001412:Bacillus subtilis / Q000201:enzymology*; D002118:Calcium; D002942:Circular Dichroism; D003956:Dialysis; D004419:Dysprosium; D004492:Edetic Acid; D004789:Enzyme Activation; D004871:Erbium; D005292:Ferricyanides; D007811:Lanthanum; D008187:Lutetium; D009354:Neodymium; D011221:Praseodymium; D011480:Protease Inhibitors; D012493:Samarium; D013053:Spectrophotometry; D013057:Spectrum Analysis; D013451:Sulfonic Acids; D013725:Terbium; D014466:Ultraviolet Rays; D015018:Ytterbium; D015019:Yttrium
chemical_list: D005292:Ferricyanides; D011480:Protease Inhibitors; D013451:Sulfonic Acids; D013725:Terbium; D004419:Dysprosium; D009354:Neodymium; D012493:Samarium; D015019:Yttrium; D008187:Lutetium; D007811:Lanthanum; D004871:Erbium; D004492:Edetic Acid; D000681:Amylases; D015018:Ytterbium; D011221:Praseodymium; D002118:Calcium