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simple proteins present in the seeds of cereals and in the green parts of plants. Glutelins are soluble in weak alkaline solutions; they are not soluble in neutral aqueous and salt solutions or in alcohol. The study of glutelins is complicated by the fact that it is difficult to extract them in a pure form. Among the glutelins, glutenin from wheat and barley seeds, oryzenin from rice seeds, and glutelin from corn seeds have been well studied. Glutelins are reserve proteins; together with prolamins, they are found in the endosperm of seeds but not in the embryo. Glutelins are rich in glutanic acid and lysine.