If I have a protein with the sequence of amino acids below, what type of structure is being described? Met-Leu-Pro-Ile-His-Ala-Leu

Protein's primary structure

Explanation:

The proteins have four different types of structures:

Primary: Describes the sequence of amino acids that is unique for each protein

Secondary: Makes reference to the proteins 3D geometry, it can be alpha-helix (product of the protein coiling) or beta-plated sheet (product of the protein folding).

Tertiary: Refers to the comprehensive 3D structure of the protein. There are many types of tertiary structures, due to hyfrophobic interactions, hydrogen unions, ionic unions.

Quaternary: Resambles the macromolecule formed by many protein molecules. Not all proteins have quaternary structure.