Answer :
The proper statement regarding leucine zipper protein dimerization and DNA binding is that polar amino acids in the dimerization domains assist leucine zipper protein dimerization. A vital biological process called protein dimerization occurs when proteins bind to produce functional assemblies, such as homo- or heterodimers.
The leucine zipper dimerization domain consists of four to five heptads, each of which has two -helical turns or seven amino acids, designated as amino acids a, b, c, d, e, f, and g. The leucine zipper oligomerization, dimerization stability, and dimerization selectivity are controlled by amino acids in the a, d, e, and g locations. The a and d locations of amino acids are often hydrophobic because they are on the same surface of the -helix. Charged amino acids often reside in the g and e locations. The five C terminal amino acids in the g position interact with the oppositely charged amino acids in the e′ position in interhelical interactions, according to X-ray crystallography. Additionally, stability is aided by Van der Waal interactions between the underlying a and d amino acids and the g and e′ methylene groups.
Learn more about amino acids here:
https://brainly.com/question/15687833
#SPJ4