Move & Rotate
31 March 98
The Ramachandran Plot Window plots only
values for the currently selected amino-acids of the current layer. The name of the
current layer is drawn at the bottom left of the window.
Amino-acids appear as a little cross with the exception of
Gly that appears as a square. To know to which amino-acid a
point belongs, simply place the mouse pointer onto a point
or a group of points. Its (their) name(s) will appear at the
top of the Window.
Omega, Phi, Psi and secondary structure
assignment of the currently displayed points can be saved as
a tabulated text-file for further analysis (Cmd + s on a
Mac, Ctrl+s on a PC). Moreover, an image can also be
exported (Mac only). Core and allowed regions as defined by
Morris et al. ref  are also framed, and it is possible to select
amino-acids that are outside of these regions in one
operation with the appropriate item of the select
Note: The Ramachandran plot can be used to
directly modify a Phi/Psi angle of a residue with a direct
feedback of the modification. All you need to do is drag a
point at its new location. You can constrain the rotation
around either of the Phi or Psi axis by holding down the "9"
or "0" key while moving the point. By default it is the
C-terminal part of the protein that will move, as a little
'c' drawn just below the help icon reminds you. If you want
the N-terminal part to move, click on the 'c' that will be
changed into a 'n'. If you want to move only a part of the
backbone (and not the whole backbone up to the C-terminal),
you must break the backbone between the last amino-acid you
want to move and the first you want to stay fixed. This is
done with the appropriate item of the tool menu.