Coeliac disease disease genotypes. It is suspected that some of them may have been beneficial by providing protection against bacterial infections. The majority of the proteins in food responsible for the immune reaction in coeliac disease are the prolamins. These are storage proteins rich in proline ("prol-") and glutamine ("-amin") that dissolve in alcohols and are resistant to proteases and peptidases of the gut. Prolamins are found in cereal grains with different grains having different but related prolamins: wheat (gliadin), barley (hordein), rye (secalin) and oats (avenin). One region of α-gliadin stimulates membrane cells, enterocytes, of the intestine to allow larger molecules
Wheat gluten (food) markets, health food stores and cooperatives. The block form of seitan is often flavored with shiitake or portobello mushrooms, fresh coriander or onion, or barbecue sauce, or packed in a vegetable-based broth. In strip form, it can be packed to be eaten right out of the package as a high-protein snack. Shaped seitan products, in the form of "ribs" and patties, are frequently flavored with barbecue, teriyaki, or other savory sauces. Wheat gluten is also used in many vegetarian products in various countries, for example by The African Hebrew Israelites of Jerusalem, a vegan African American religious sect that operates