The Alpha Helix Flashcards
1
Q
Who proposed the alpha-helical conformation in 1950?
A
Linus Pauling and Robert Core
Source: CHAPTER 4 Proteins: Three-Dimensional Structure and Function
2
Q
What is the pitch of an ideal alpha helix?
A
0.54 nm
Source: CHAPTER 4 Proteins: Three-Dimensional Structure and Function
3
Q
What is the rise of an alpha helix per amino acid residue?
A
0.15 nm
Source: CHAPTER 4 Proteins: Three-Dimensional Structure and Function
4
Q
What is the number of amino acid residues required for one complete turn in an ideal alpha helix?
A
3.6 residues
Source: CHAPTER 4 Proteins: Three-Dimensional Structure and Function
5
Q
In what direction does the backbone turn in a right-handed alpha helix?
A
Clockwise
Source: CHAPTER 4 Proteins: Three-Dimensional Structure and Function
