title: The effect of pretreatment with calcium and magnesium ions on phosphoenzyme formation by sarcoplasmic reticulum ATPase.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism*; D002118:Calcium / Q000494:pharmacology*; D007700:Kinetics; D008274:Magnesium / Q000494:pharmacology*; D010766:Phosphorylation; D012519:Sarcoplasmic Reticulum / Q000201:enzymology*
chemical_list: D000251:Adenosine Triphosphatases; D008274:Magnesium; D002118:Calcium