prolamin

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of a class of simple proteins soluble in alcohol and usually having a high proline and glutamine content, found in the grains of cereal crops such as wheat, rye, barley, corn, and rice.

from The Century Dictionary.

• noun See the extract.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biochemistry Any of a group of plant storage proteins, that have a high proline content, found in cereals