GVSU Chemistry Tutorial

Markers

1. Atom key giving colors of atoms
2. N-terminal end of helix
3. C-terminal end helix
4. A helix hydrogen bond (in yellow)

Challenge Questions

1. How many amino acids are in this helix?
2. Focus on one hydrogen bond in the helix. How many intervening amino acids are between the hydrogen bonded atoms?
3. One turn of an ideal alpha helix is 3.6 amino acids. Is this helix close to ideal?
4. Below is a line-angle structure for a peptide. If this peptide curled to form a turn of an alpha helix, draw a dotted line between any two of the atoms that would be hydrogen bonded.