ramachandran plot for the *current* state can be created with the DynoPlot plugin:
It uses the API function "get_phipsi", which can calculate phi/psi angles for given states:
cmd.get_phipsi(selection='(name ca)', state=-1)
Torsion angles other than phi/psi can be calculated with the "get_dihedral" fuction:
You can also modify torsion angles with "torsion" and "set_dihedral":
And you can modify torsion angles interactively using the mouse while in editing mode (pick one atom, then CTRL-Drag).
Hope that helps.
On 11/16/2011 06:50 PM, James Starlight wrote:
Dear PyMol Users!
I wounder to know about posible ways to plot for my structures different
torsion angles (phy, psi, chi ) on the ramachandran map via pymol.
In particular I would like to obtain the next information
1- I d like to visualise and measure different torsions for my structure
and plot this values on the ramachandran plot
2- I'd like to make such measurements for the enssemble of the pdb
structures and plot on the ramachandran map values for each structure (
by points or other markers)
Finaly could you show me some tutorials wich could help me working with
torsions in pymol?
Thanks for your help,
MPI for Developmental Biology