On 23/01/2022 09:56, YUVARAJ I wrote:
Respected Prof. Paul,
Thank you so much for your reply, I have followed your instructions, while during refmac run, It showed the error of "Error: New ligand has been encountered. Stopping now" when I gave the cif file as input in Additional geometry dictionary option in Refmac , It is giving the output (screenshot1) attached. Kindly give me instructions or any link containing the steps, which I need to follow. As mentioned by Prof. Gerard, I have both tetrahedral ((HgI4)2-) and trihedral (HgI3)-) electron densities. Can you please send another cif file for (HgI3-) as well and set of instructions, It will be very much helpful.
Thank you in advance.
Regards
Yuvaraj


On Sun, Jan 23, 2022 at 5:07 AM Paul Emsley <pems...@mrc-lmb.cam.ac.uk <mailto:pems...@mrc-lmb.cam.ac.uk>> wrote:


    On 22/01/2022 22:10, Georg Mlynek wrote:

    Dear Paul,

    can you please tell me what the Acedrg Tables reference (I assume
    a table of curated stereochemistry values) and where I can find
    that table?

    Where does coot save these cif files? (Not in
    CCP4-7\7.1\Lib\data\monomers\ as I always thought, before I tried
    now.)


    Many thanks, br Georg.


    Am 22.01.2022 um 22:51 schrieb Paul Emsley:


    On 22/01/2022 21:47, Paul Emsley wrote:


    On 22/01/2022 17:34, YUVARAJ I wrote:


    I have solved a protein structure using anomalous signal using
    mercury(II)potassium Iodide(K2HgI4).

    I wanted to submit the structure of the protein with
    mercury(II) potassium iodide to PDB.

    I am facing problems while making the ligand (HGI4) . HGI4 is
    not available in the pdb.

    Make Ligand in CCP4 is showing error

    [...]

    I have attached the screenshots for reference.



    If it really is tetrahedral you could try the attached (TIM is
    already taken so you'll have to rename it  - or wwPDB will do
    it for you).

    I desalted it of course. I also updated (hand-edited) the bond
    distances using the Acedrg Tables reference.

    If successful, send us a picture of the post-refinement maps.


    Sorry, I forgot to add:

    Use File -> Import CIF dictionary

    Tick the "Generate a Molecule" before clicking "Open"



    The Acedrg tables are in $CCP4/share/acedrg/tables - they are
    tables, not cif files.

    The particular file I used today was allMetalBonds.table.

    Acedrg is not part of Coot, but it is part of CCP4.

    Paul.




Hi Yuvaraj I,


Your log file does not contain a record of the command invocation arguments unfortunately. But it does seem to me that you did not specify LIBIN.


Paul.





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