1H NMR studies on interactions of calcium and magnesium with aspartic acid and asparagine.
1H NMR was used to establish the modes of binding magnesium and calcium ions with L-aspartic acid and L-asparagine. Constants of vicinal proton-proton coupling were used to evaluate the rotational isomerism of amino acids and and their complexes with metal ions. Both ions studied interact with carboxyl groups of amino acids but only magnesium ion binds with amino group.
D000818:Animals; D001216:Asparagine / Q000378:metabolism*; D001224:Aspartic Acid / Q000378:metabolism*; D001665:Binding Sites; D002118:Calcium / Q000378:metabolism*; D006801:Humans; D008274:Magnesium / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D008954:Models, Biological; D008958:Models, Molecular; D008968:Molecular Conformation
D001224:Aspartic Acid; D001216:Asparagine; D008274:Magnesium; D002118:Calcium