Question

Question #c3628

Answer 1

Alpha helix has 3.6 amino acids per turn of the helix

Explanation:

The distance separating each turn of the helix was 5.4 Å,

Since 5.4 Å / 3.6 is 1.5 Å,

the alpha-helix has an amino acid every 1.5 Å,

1 micron = `10^-6` m

1 Å = `10^-10` m

= 27 / 1.5

= 18 amino acids