Gliadin and Glutenin They are the wheat proteins (gliadin, soluble in alcohol and glutenin, insoluble in alcohol) and are composed of amino acid chains (1). Gliadin is made up of the union of about 100-200 amino acids (the main cause of celiac disease), and glutenin, consisting of a combination of about 2,000-20,000 amino acids. The … Continue reading Gluten: amino acids, digestion, toxic peptides