Protein Structure

Question 1

what is the protein primary structure?

Answer 1

amino acid sequence

Question 2

what is the secondary protein structure?

Answer 2

• alpha helix + beta pleated sheet

- formed by HB between peptides

Question 3

…. can cause problems

Answer 3

proline

exist as trans + cis

Question 4

which AA has more conformational freedom than the others?

Answer 4

glycine

Question 5

what is the proteins tertiary structure?

Answer 5

packing of secondary structure

interactions: van der Waals, hydrophobic, electrostatic, hydrogen bonds

Question 6

what is the proteins quaternary structure?

Answer 6

multiple strands of AA

Question 7

haemoglobin

Answer 7

• made of 4 separate myoglobin strands
• each strand has heme unit used to transport oxygen
• strands held together by non-cov bonds