Examples of Electrostatic Interactions Intramolecular ionic bonds between charged amino acid residues in a protein: Magnesium ATP NH2 -NH3*O-C-CH2 Mg2+ 0.NHg-(CH2)4 OH Examples of Electrostatic Interactions Intramolecular ionic bonds between charged amino acid residues in a protein: NH3 + O C O CH2 H2C C O O - NH3 + (CH2 )4 N N N N NH2 O OH OH P O P O P O O O O O O O O Mg2 + Magnesium ATP