Figure 4.
Cross-sectional view of the region surrounding the Asn 15 (a) core in Hybrid 2. Hydrogen bonds are denoted by dashed yellow lines. Oxygen atoms are red; nitrogen atoms are blue. The Cα helix backbone is shown in white (ribbon representation). The two interconverting conformers of Asn 15 and Asn 15′ (‘in’ or ‘out’) are inside the pink boxes of panels A and B. (A) Asn 15 is ‘in’ (lower helix); Asn 15′ is ‘out’ (upper helix). (B) Asn 15 is ‘out’ (lower helix); Asn 15′ is ‘in’ (upper helix).