Chapter 4: Protein 3D Structure Flashcards
1
Q
How is a dipeptide formed
A
The formation of a dipeptide from two amino acids is accompanied by the loss of a water molecule.
2
Q
Why do peptide bonds have a partial double bond character
A
Due to the resonance stabilization of the peptide bond.
o This limits the rotation of the bond.
3
Q
Why are peptide bonds trans-configuration and not cis?
A
Cis configuration is unfavorable because of steric clashes of the side chains.
4
Q
What are the secondary structure of polypeptide chains?
A
the 3D structure formed by hydrogen bonds between peptide NH and CO groups on amino acids that are near one another in the primary structure.
5
Q
What are examples of a secondary structure
A
The alpha helix, beta sheets, and turns
6
Q
A
