Protein Structure

Question 1

What are the 4 levels of protein structure?

Answer 1

1. Primary
2. Secondary
3. Tertiary
4. Quaternary

Question 2

What are the two main Secondary Protein Structures?

Answer 2

1. alpha-helix

2. beta-pleated sheet

Question 3

What is a Tertiary Protein Structure?

Answer 3

The overall folding pattern or three-dimensional conformation of a polypeptide chain

Question 4

What are the two classes of proteins?

Answer 4

1. Fibrous

2. Globular

Question 5

What is Quaternary Protein Structure?

Answer 5

The overall protein structure that results from the aggregation of two or more polypeptide chains

Question 6

What bonds are involved in Tertiary and Quaternary protein structures?

Answer 6

1. Ionic bonds
2. Disulfide bonds
3. Hydrogen bonds
4. Hydrophobic (non-covalent) interactions

Question 7

Where does the bonding take place between amino acids?

Answer 7

In the side chains