Proteins in Milk, Oat , Eggs and Soy I have read that there are proteins in oat which are similar to those in soy, milk and eggs. I know nothing about biochemistry, and I'm struggling to decipher the info i find.. the closest Ive got to an answer is albumin - which i believe to be a group of proteins, all present in the above? Can you be intolerant to albumin? or a derivative of? a simpilar version of the question - what is the name of the protein(s) found in milk/oat/eggs and soy, if any? the reason for my question, my daughter has a milk/egg/oat (protein) intolerance and I'm just interested to find out if its a particular protein (or group of), or if its an intolerance to random things. Many thanks!

Allergies are often caused by the immune system reacting to a part of a specific protein, therefore it is in fact a specific protein in the food that is causing the allergic reaction to occur.

Milk allergies are caused by casein and whey (Source: Mayo Clinic)

Oat allergies can be caused by avenin (Source: EJCI)

Soy and egg allergies are caused by their respective albumin proteins. Additionally, egg lysozyme can also cause allergy. (Source: Cleveland Clinic, Food Allergy)