Backbone
(
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For the molecules in the Proteins and Nucleic Acids categories, the backbone structure can be visualized in a schematic rendering, highlighting the secondary structure elements for proteins and matching base pairs for nucleic acids. The backbone visualization can be combined with any of the atom-level visualizations.
Five color schemes are available for backbone structures:
- Color by Type For proteins, beta sheets are blue, helices red and loops/coil gray. For nucleic acids backbone ribbons are white while the individual nucleotides are indicated in green (T/U), red (A), yellow (G), and blue (C).
- Color by Residue Position Rainbow color scale going from blue over green to yellow and red, following the residue number
- Color Different Chains Each chain/molecule is assigned its own random color.
- Color by Backbone Temperature based on the b-factors for the C
atoms (the central carbon atom in each amino acid) and a color scale going from blue (0) over white (50) to red (100). The b-factors are a measure of uncertainty or disorder in the atom position; the higher the number, the higher the disorder.
- Custom Color The user selects molecule colors from a palette.