exorphin (from gluten found in cereals wheat, rye, barley) Gliadorphin/gluteomorphin (from gluten found in cereals wheat, rye, barley) Soymorphin-5 (from soybean) Rubiscolin (from spinach) Amphibian Deltorphin Deltorphin I Deltorphin II Dermorphin Synthetic Zyklophin – semisynthetic KOR antagonist derived from dynorphin A References External links Protein families