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A D-Amino Acid Would Interrupt An α\alpha Helix Made of L-Amino Acids

Question 20

Multiple Choice

A d-amino acid would interrupt an α\alpha helix made of l-amino acids.Another naturally occurring hindrance to the formation of an α\alpha helix is the presence of:


A) a negatively charged Arg residue.
B) a nonpolar residue near the carboxyl terminus.
C) a positively charged Lys residue.
D) a Pro residue.
E) two Ala residues side by side.

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