Which of the following is true of the leucine-zipper structural motif?

A. It contains several evenly spaced leucine residues that make specific DNA contacts.
B. It is made up of a single alpha-helix.
C. It is often used to mediate protein-protein interactions.
D. It is only found in bacterial proteins.


C

Biology & Microbiology

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IgE antibodies are the rarest of the five types of immunoglobins and involved in an allergic response.

a. true b. false

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A) low temperature B) hypotonic C) isotonic D) hypertonic E) a biofilm

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