Question

Examples of prolamins in corn and wheat:

• A. Hordein and zein
• B. Gliadin and hordein
• C. Oryzenin and zein
• D. Zein and gliadin

Hint:

Remember that prolamins are plant storage proteins found in cereals like corn (zein), wheat (gliadin), barley (hordein), and rice (oryzenin). These proteins are rich in proline and glutamine.

Answer 1

The Correct Option is D

Prolamins are a group of plant storage proteins that are rich in proline and glutamine. They are found in the seeds of certain cereal grains, particularly in corn, wheat, and rice.
- Hordein and zein: Hordein is a prolamin found in barley, while zein is the prolamin found in corn. This combination is incorrect because it mixes prolamins from different plants.
- Gliadin and hordein: Gliadin is a prolamin found in wheat, and hordein is found in barley. Again, this is incorrect as it mixes prolamins from different plants.
- Oryzenin and zein: Oryzenin is a prolamin found in rice, and zein is found in corn. This is also incorrect as it involves two different plant sources.
- Zein and gliadin: Correct! Zein is the prolamin in corn, and gliadin is the prolamin in wheat. These two prolamins are the correct examples for corn and wheat.
Thus, the correct answer is (4) Zein and gliadin.