Structural Proteins Definition:

Fibrous proteins that are used for their structural rigidity. Examples include a-keratins found in hair, nails, skin, feathers, and wool.

Structural Proteins Explained:

A proteins shape is what makes it important to the particular function. The proteins shape is determined by its primary structure and the configuration of amino acids. The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene (DNA) encoding it.