MeSH definition : DNA-binding motifs formed from two alpha-helixes which intertwine for about eight
turns into a coiled coil and then bifurcate to form Y shaped structures. Leucines
occurring in heptad repeats end up on the same sides of the helixes and are adjacent
to each other in the stem of the Y (the zipper region). The DNA-binding residues are
located in the bifurcated region of the Y.;
DNA-binding motifs formed from two alpha-helixes which intertwine for about eight
turns into a coiled coil and then bifurcate to form Y shaped structures. Leucines
occurring in heptad repeats end up on the same sides of the helixes and are adjacent
to each other in the stem of the Y (the zipper region). The DNA-binding residues are
located in the bifurcated region of the Y.