Hi Anat,
have you tried Sphere refine?
Jan

On 03/20/2013 02:24 PM, Anat Bashan wrote:
Hi All,

I build a ligand that is partly RNA and Partly a protein chain. In between I 
have a special nucleotide with a N bound to C3' (instead of O3'). it is : 
CC-PPU-Ala-Phe-Val. I have links in the .pdb file and the PPU is a known ligand 
to COOT.  My links connect the N3' of the PPU with the C of Ala. nevertheless, 
if I try to regularize or refine the Ala keeps moving away from the PPU. The 
other link I defined between the C and the PPU works fine.
What am I missing here ?
Do I need to specify anything else than the LINK?
I attached the .pdb file of my ligand for you to be able to load into coot and 
try playing with it yourself.

I look forward for your help.

Best, Anat.


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