Problem: An α helix would be destabilized most by:A. interactions between neighboring Asp and Arg residuesB. the presence of an Arg residue near the carboxyl  terminus of the α helixC. the presence of two Lys residues near the amino terminus of the α helix

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In an  α helix, the position of an amino acid residue relative to its neighbors is important. The interactions in these neighboring amino acid side chains have a significant effect on the stability of α helical structures. 

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Problem Details

An α helix would be destabilized most by:

A. interactions between neighboring Asp and Arg residues

B. the presence of an Arg residue near the carboxyl  terminus of the α helix

C. the presence of two Lys residues near the amino terminus of the α helix