[gmx-users] How to use deuterium order parameters

2011-11-02 Thread Alex
Dear All

I'd like to perfom a deuterium oerder parameters analysys in a system with DPPC 
+ Protein + Water
I read that I've to make an index file that contains one group each for every 
carbon atom in the acyl-chain (starting
with the carbonyl-carbon and going further down).
Where can I get carbon atoms index in the acyl-chain to group them? Have I to 
open the DPPC in pdbviewer

I need as well to make two index files: for sn1 and sn2 chains of DPPC.
Have I to run g_order in both ndx files (sn1 and sn2)?

Thanks

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Re: [gmx-users] How to use deuterium order parameters

2011-11-02 Thread Igor Marques
On Wed, Nov 2, 2011 at 2:06 PM, Alex alexbioi...@yahoo.com wrote:

 Dear All

 I'd like to perfom a deuterium oerder parameters analysys in a system with
 DPPC
 + Protein + Water
 I read that I've to make an index file that contains one group each for
 every
 carbon atom in the acyl-chain (starting
 with the carbonyl-carbon and going further down).
 Where can I get carbon atoms index in the acyl-chain to group them? Have I
 to
 open the DPPC in pdbviewer

yes, that's a way to do it.


 I need as well to make two index files: for sn1 and sn2 chains of DPPC.

yes, that is correct.


 Have I to run g_order in both ndx files (sn1 and sn2)?

yes, that is also correct. make sure to write two different output files
(sn1.out and sn2.out)




 Thanks

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