Synthesis and chemical and biological evaluation of a glycine tripeptide chelate of magnesium

Derek R. Case, Jon Zubieta, Ren Gonzalez, Robert P. Doyle

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Magnesium (Mg2+) plays a crucial role in over 80% of all metabolic functions. It is becoming increasingly apparent that magnesium deficiency (hypomagnesemia) may play an important role in chronic disease. To counteract magnesium deficiency, there is an unmet clinical need to develop new fully characterized, highly bioavailable, and substantially water-soluble magnesium supplements. To this end, triglycine (HG3 ), a tripeptide of the amino acid glycine, was chosen as a chelating ligand for magnesium, given its natural occurrence and water solubility, and entropically-driven metal binding. Herein, we discuss the synthesis, chemical and physical characterization, and cellular uptake of a magnesium triglycine chelate (MgG3), an octahedral complex with extraordinary water solubility and improved cellular uptake in CaCo-2 cells than select commonly used magnesium supplements.

Original languageEnglish (US)
Article number2419
Issue number9
StatePublished - Apr 21 2021


  • Amino acid chelate
  • CaCo-2 cells
  • Magnesium
  • Solubility
  • Triglycine

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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