On Wed, Jan 20, 2021 at 11:40 PM Pragati Sharma <[email protected]> wrote:
>
> Dear all,
>
> I have some confusion regarding the molecule name to be put in xml as well as 
> topology file during IBI.
>
> In atomistic topology, if the molecule name is 'PI' and for CG, I have taken 
> 'CGPI'.
>
> 1. In first map file;  in atomistic section; hexane.xml in hexane tutorial, 
> the names I specified for my molecule are:
>
> <cg_molecule>
>  <name>CGPI</name> ; CGPI is the name to be given for CG moleculetype
>   <ident>PI</ident> ; PI is moleculetype in atomistic topol.top file;  In 
> hexane tutorial, this is 'Protein'
This was 'Protein' because the molecule is called like this in topol.top, see:
https://github.com/votca/csg-tutorials/blob/master/hexane/atomistic/topol.top#L5
>
> 2. In the second mapp file; hexane_cg.xml  in 'ibi_all' folder of hexane 
> tutorial, my names would be
> <cg_molecule>
>   <name>CGPI</name> ; for CG
>   <ident>PI</ident>; In hexane tutorial, it is 'hexane' , shouldn't it be 
> 'Protein' like in hexane.xml file. Where does this hexane come from. Is it a 
> random choice?
It depends how you call the molecule in topol.top, it was called
hexane in that case:
https://github.com/votca/csg-tutorials/blob/master/hexane/ibi_all/topol.top#L13
> <topology>
>     <cg_beads>
>       <cg_bead>
>         <name>A1</name>
>         <type>A</type>
>         <mapping>UNITY</mapping>
>         <beads>1:RES:A1</beads>; In hexane tutorial, instead of 'RES', there  
> is hex
>       </cg_bead>
>
> I have a question here, where does this 'hex' come from. Should I write any 
> random name here for mapping, like I have written 'RES'. If I put 'PI' or 
> 'CGPI' here instead of RES. error comes that 1:CGPI:A1, bead is not 
> recognised.

In the cg case, we called the residue 'hex', hence that showed here, see:
https://github.com/votca/csg-tutorials/blob/master/hexane/ibi_all/topol.top#L17

For the mapping will, you can just run "csg_dump --top
atomistic_topol.tpr" and look at how the beads are named if you are
unsure.

Same is true for the molecule identifier, just look at the output of
csg_dump to understand what VOTCA reads from the tpr file.

Christoph
>
> 3. In the topol.top file in ibi_all folder. should I write the CG name ( 
> CGNRP here) in the moleculetype and molecules directive
>  [moleculetype]
> CGNRP       3
>
> [ molecules ]
> ; Compound        #mols
> CGNRP          1000
>
> A quick help will be very much appreciated.
> Thanks
>
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-- 
Christoph Junghans
Web: http://www.compphys.de

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