What are the four levels of protein structure and what is one attribute of each level?

Answer 1

1. Primary Structure- This is the chain of amino acids that are formed via peptide bonds (Dehydration Reaction!)
2.  Secondary Structure- This is a structure that forms when the amino group and the carbonyl group of a polypeptide chain hydrogen bond. This can manifest itself as either a α helix or a β pleated sheet.
3. Tertiary Structure- A higher level of structure which accounts for most of a protein's folding. Is governed by interactions such as hydrogen bonds and ionic bonds between R groups. 
4. Quaternary Structure- The highest level of protein structure that results from interactions between several polypeptide subunits.