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Fig. 4. Structure of Axin-RGS. (A) Final Axin-RGS 2Fo – Fc α-calc electron density map in the region of surface-exposed, conserved residues Phe156 and Gly160. The map is contoured at 1.2σ. (B) Comparison of Axin-RGS with RGS4. Axin-RGS is red, RGS4 is gray. Helices are labeled as in Figure 3B. The additional helix of Axin-RGS (α5a) and the turn of the π-helix (π) are indicated.
