Protein Structure

Question 1

What are the 4 levels of protein structure?

Answer 1

Primary, secondary, tertiary, and quaternary

Question 2

Explain the primary structure of protein

Answer 2

Sequence of amino acids in a polypeptide chain

Question 3

Explain the secondary structure of protein

Answer 3

Hydrogen bonding of the peptide backbone causes the amino acids to fold into a repeating pattern

Two types:
- beta-sheet
- alpha helix

Question 4

Explain the tertiary structure of protein

Answer 4

Three-dimensional folding pattern of a protein due to side chain interactions

Question 5

Explain the quaternary protein structure

Answer 5

Protein consisting of more than one amino acid chain

Question 6

What happens to a protein if it becomes denatured?

Answer 6

It disrupts the hydrogen and ionic bonds holding the tertiary structure together and the proteins lose their functionality

Question 7

How would changes in a particular amino acid affect protein structure and function?

Answer 7

Even changing just one amino acid in a protein’s sequence can affect the protein’s overall structure and function