FigRamach

FigRamach - Ramachandran plot

FigRamach name name nameList
    ( none | normal | VAL-ILE-THR | GLY )
    ( dot | plus | cross | res | res_box |
    mol | mol_box )
    ( dot | plus | cross | res | res_box |
    mol | mol_box )
    ( 0 | 1) ( 0 | 1 )

Create a Ramachandran plot with the first angle name on the x-axis and the second angle name on the y-axis. Only residues where both angles are selected are shown.

The third argument is a space separated list of alternative residues (typically GLY).

The fourth argument selects the background (allowed regions). The allowed regions were determined from 378 different crystal structures with a resolution of 2.5 A or better. The regions where the density of points (PHI/PSI) from this statistic is highest are marked with color. The green regions contain 80% of all points, the green and yellow regions together 95%, all colored regions together 98%. There is a background for all non-GLY/PRO residues, one for VAL/ILE/THR and one for GLY.

The fifth argument selects the display style of residues not listed as alternative, the sixth argument the one for alternative residues.

If the color option is selected, he colors of the markers is taken from the bond corresponding to the angle, otherwise they are all black.

If the last option is selected and all angles shown in the plot have the same angle constraints, the allowed region is indicated in light grey.

The user can select residues by clicking on symbols in the plot.

EXAMPLE

FigRamach 'PHI' 'PSI' 'GLY' normal dot plus 1 0

ReadAco, SelectAngle, FigOff

DATE

960519