Concept #1: Primary Structure

Concept #2: Secondary Structure

Concept #3: Tertiary Structure

Concept #4: Quaternary Structure

Concept #5: Unstructured Regions

Practice: Match the following protein structures with their appropriate definitions 

i. Primary Structure _____________
ii. Secondary Structure _____________
iii. Tertiary Structure _____________
iv. Quaternary Structure _____________ 

a. 3D conformation of a single polypeptide chain 

b. Linear sequence of amino acids 

c. Folding of multiple polypeptide chains together 

d. Local structures of a single polypeptide chain

Practice: An alpha helix is a protein folding pattern that is classified under which of the following protein structures?

Practice: A protein with 3000+ amino acids obtained a mutation that caused an amino acid change in a region of the protein that does not normally interact with other molecules. What type of effect could this cause?

Practice: he entire sequence of the protein is used to form the protein’s structure.

Practice: A coiled coil and an alpha helix are two terms for the same structure.