Generated color schemes for sequence alignment visualizations
Project description
Multiple sequence alignments are often visualized by coloring the symbols according to some kind of properties. For example a color scheme for amino acids could use one color for hydrophobic residues, another color for positively charged residues and so forth. Usually, such color schemes are created manually by experienced people who have knowledge about the characteristics of the e.g. amino acids, so they can assign equal or similar colors to amino acids that share similar properties.
The Gecos software follows a different approach: Instead of looking at specific, sometimes subjective properties, it uses another source for estimating the similarity of symbols: the substitution matrix itself. Similar colors are assigned to high scoring pairs of symbols, low scoring pairs get distant colors - in a completely automatic manner. As a result the distance of two symbols in the substitution matrix corresponds to the perceptual differences in the color scheme.
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