Figure 2 - full size

 

Figure 2.
Fig. 2. Experimental, 1.8-Å resolution MAD-phased electron density map (P3[1]21, contoured at 1 ) produced by ELVES superimposed on the refined model of the GCN4 Asn-16-Ala leucine-zipper variant. (A) Cross section through the trimer at the level of the Ala-16-Leu-12-Leu-12 layer. (B) Cross section through the trimer at the level of the Leu-12-Ala-16-Ala-16 layer.