Hi,

the attached code produces a helix, as intended. But most of the
segments are white, rather than the colours prescribed. What am I doing
wrong?

For non-biologists: This is supposed to be a schematic drawing of a
protein sequence found in those mitochondrial proteins which are
manufactured in the cytosol. All basic amino acids (blue) occur in a
particular quadrant, the remaining quadrants are hydrophobic (green) or
polar (orange). This specific arrangement is recognised by a protein
transporter which imports these proteins into the mitochondrium.

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Attachments:
Download 'helix.pov.txt' (9 KB)