Figure 1From: Relationship between chemical shift value and accessible surface area for all amino acid atomsAla CA exposure, by secondary structure. Chemical shift versus ASA values for the CA atom of alanine, with data points coloured by the secondary structure of the residue. Scaled frequency polygons are shown for chemical shifts (for atoms that are exposed (red line) and buried (purple line, zero per-atom ASA)) and for the exposure values (grey).Back to article page