Which of the following is true of secondary structure in protein folding? It inv
ID: 61542 • Letter: W
Question
Which of the following is true of secondary structure in protein folding?
It involves hydrogen bonding.
It involves the side chains.
It involves hydrophobic interactions.
It results in alpha helicies with the side chains hidden inside the helix.
It results in beta-pleated sheets with side chains sticking out of the plain of the sheet.
It involves the peptide backbone.
A.It involves hydrogen bonding.
B.It involves the side chains.
C.It involves hydrophobic interactions.
D.It results in alpha helicies with the side chains hidden inside the helix.
E.It results in beta-pleated sheets with side chains sticking out of the plain of the sheet.
F.It involves the peptide backbone.
Explanation / Answer
A. It involves hydrogen bonding
D. It results in alpha helicies with the side chains hidden inside the helix.
E. It results in beta-pleated sheets with side chains sticking out of the plain of the sheet.
F. It involves the peptide backbone
When portions of amino acid chain take on a certain orientation in space, like an alpha helix, beta plated sheet, the “secondary structure” occurs. It only involves hydrogen bonding of peptide back bone but does not involve side chains. Side chain interactions and hydrophobic interactions are important in tertiary structure.
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