Exam 2: Protein Composition and Structure

Collagen contains _____________________, a modified amino acid.

At a pH of 12, what is the charged group(s) present in glycine?

Every third residue in the protein collagen is ____________________.

Why are all the theoretical combinations of phi and psi not possible?

Which amino acid forms disulfide bonds?

$\alpha$ -Keratin is referred to as a coiled-coil protein. Describe the protein structure of $\alpha$ -keratin.

_____________________________ refers to the spatial arrangement of subunits and the nature of their interactions.

How does the protein backbone add to structural stability?