Figure 1.

Amino acid composition differences in kinked and nonkinked transmembrane segments. The ratio of residue frequencies in kinked versus nonkinked nine-residue segments from the strict database is shown. Darker regions signify residues that are overrepresented when comparing kinked to nonkinked structures. The position in the segment is labeled along the horizontal axis, and residue type is labeled along the vertical axis. A numerical scale has been provided in the bottom half of the figure. A more quantitative view of this data is provided by histograms in the Supporting Information. This heatmap was generated using Matrix2png.¹⁸