Chapter 20, Problem 20.97EP

Indicate whether each of the following statements concerning secondary protein structure is true or false.

1. a. Hydrogen bonds present in an α helix structure involve two adjacent amino acids.
2. b. Both α helix and β pleated sheet structures can be present in the same protein.
3. c. In a β pleated sheet structure, the hydrogen bonding is always between different protein chains.
4. d. In an α helix, all of the amino acid R groups lie inside the helix.