
Figure 1.
X-ray structure of GCN4 B-ZIP motif bound to a TRE DNA sequence (Ellenberger et al. 1992). The DNA is in red. The B-ZIP α-helices are in blue with the leucines in the ‘d’ position shown in gray. The N-terminus of the protein is labeled. The basic region and leucine zipper are labeled. The first three heptads of the leucine zipper are highlighted.











