The protein which hydrolyzes to produce large amount of proline and ammonia is called prolamine. It is insoluble in water. But 70-80% soluble in ethyl alcohol. They do not coagulate in heat. It is found only in the seeds of plants. Animals do not contain prolamin. Eg – gliadin (rice/rye/wheat), zein (bhutra), hordin (barley/barley) etc.