Types of Protein

Ovalbumin, a type of storage protein, is found in the albumin (whites) of eggs.

Gallus domesticus.

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Keratin, a type of structural protein, is found in animal hair and claws.

Mustela putoris furo.

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Insulin, a type of hormone, regulates metabolism and the breakdown of carbohydrates and fats from ingested foods. When synthetically making insulin for the purpose of diabetics, scientists connect small pieces of DNA in the proper sequence into plasmids. These plasmids are then ingested into Escherichia coli specimens who "switch on" the insulin.

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For more reading: http://www.diabeteswellbeing.com/synthetic-insulin.html

Actin and Myosin are motor proteins found in muscle fibers of Erethizon dorsatum and other eukaryotic cells.

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Catalase is an enzyme found in almost all organisms that use oxygen. It is the catalyst in the breaking down of hydrogen peroxide into water and hydrogen.

Tamias striatus

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