3 Questions
Which type of bond is responsible for the free rotation between the alpha-carbon and the amino nitrogen in an amino acid residue?
Covalent bond
Which regular structure can a polypeptide chain fold into?
Beta-pleated sheet
What is the local arrangement of the backbone of a polypeptide chain that is hydrogen-bonded?
Turns
Study Notes
Bonding in Amino Acid Residues
- The single bond between the alpha-carbon and the amino nitrogen is responsible for the free rotation in an amino acid residue.
Polypeptide Chain Structure
- A polypeptide chain can fold into an alpha-helix, a regular structure.
Polypeptide Backbone Arrangement
- The local arrangement of the backbone of a polypeptide chain is an alpha-helix, which is hydrogen-bonded.
Test your knowledge on the structural elements of polypeptide chains with this quiz! Explore the rotation of bonds within amino acid residues and learn about the hydrogen-bonded arrangements in the backbone. Identify regular structures like alpha helix, beta-pleated sheet, turns, loops, bends, and coils.
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