Which of the following statements concerning leucine zipper protein dimerization and DNA binding is correct?
A. Leucine zipper proteins function as a dimer with both subunits making contact with the sequence-specific DNA site.
B. Leucine zipper proteins use ionic bonds to bind with the sequence-specific DNA site.
C. Leucine zipper proteins contain many leucine amino acids in the DNA-binding region that facilitate sequence-specific DNA binding.
D. Leucine zipper protein dimerization is facilitated by polar amino acids in the dimerization domains.
Ans: A. Leucine zipper proteins function as a dimer with both subunits making contact with the sequence-specific DNA site.
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