Alpha Helix

Question 1

Alpha Helix turns what way

Answer 1

right handedly

Question 2

Optimal degree angles for alpha helix

Answer 2

-60 degrees

Question 3

310 HELIX

Answer 3

Different from the alpha helix. 3 amino acid residues down, separated by 10 atoms, including the ones involved in the hydrogen bond

wider and tighter, but remains a helix

Question 4

How many amino acids complete a single turn on the alpha helix

Answer 4

3.6

Question 5

-60 degree angle is important because

Answer 5

it allows the helix to form that turn

Question 6

Prolines are good for kinking because

Answer 6

proline doesn’t have the capacity for back bone h binding

proline can’t participate in hydrogen bonding. they destabilize the alpha helix

Question 7

hydrogen bonding is along the ____ of the helix

Answer 7

axis

Question 8

compare the alpha helix to the 310

Answer 8

alpha helix complete its hydrogen bond via two residues separated by 3 amino acids, so 4 jumps down stream.

310 is 3 jumps downstream, separated by 2 amino acids, and involve 10 atoms including the ones doing the bonding