What is gluten?

Info source: 

http://whole9life.com/2011/11/gluten-free-part-1/

What is Gluten?

Gluten is a two-part protein composite that is found in many grains, but most famously in wheat. It consists of a prolamin and a glutelin. Prolamins are storage proteins, and they are the “hardware stores” of the wheat structure that distribute amino acids central to the plant’s development. Glutelin is the “glue” that holds these hardware stores together. These proteins are essential to the existence of these grains, but as we’ll explore further, that is also the same characteristic that makes them so harmful to our bodies.

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The following is from 

http://www.nutritionremarks.com/2013/05/13/gluten-free-diet-may-help-in-diarrhea-linked-to-irritable-bowel-syndrome/