Thr And/or Leu Residues Tend to Disrupt An $\alpha$ Helix When They Occur Next to Each Other in a When

question 4

Multiple Choice

Thr and/or Leu residues tend to disrupt an $\alpha$ helix when they occur next to each other in a protein because:

• A) an amino acids like Thr is highly hydrophobic.
• B) covalent interactions may occur between the Thr side chains.
• C) electrostatic repulsion occurs between the Thr side chains.
• D) steric hindrance occurs between the bulky Thr side chains.
• E) the R group of Thr can form a hydrogen bond.

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