[Chimera-users] D-Proline modeling in Chimera

[Raghavender Upadhyayula]

I am using PyMol for modeling a peptide containing D-aminoacid 
(D-Proline) residue. I could invert the configuration arounf L-Proline 
to convert it to D-Proline. But, I want the "Phi" of the Proline to 
adopt a certain value. When i tried using the torsion command by 
selecting the bond N-CA of the D-Proline residue, there is no change at 
all. I want the Phi value to change from -60 deg to +60 deg and use this 
as the model for further analysis. Also, the "Psi" needs to fixed at 120 
deg.

Is it possible in any way to carry out the same steps and achieve the 
desired results in Chimera.

Any suggestions on how to carry out this would be highly appreciated.

-- 
U.S.Raghavender, PhD
Postdoctoral Fellow
SRI International
140 Research Drive
Harrisonburg, VA  22802
540.438.6643