In this book, the authors present current research in the study of the biosynthesis, physiological functions and commercial uses of glycine. Topics discussed include the molecular complexation of glycine with 18-crown-6 in aqueous-organic solvent; concentrated glycine based electrolytes and application to solid pH sensor; heterologous expression of the glycine receptor chloride channel; the theoretical evaluation of the properties of energy deposition associated with the collision of fast ions with glycine and its zwitterions; electrochemistry of aliphatic bifunctional molecules; and the clinical uses of glycine.