[gmx-users] positional restraint

2009-10-23 Thread krishnakumar
Hi,

I was wondering if it would be possible to apply positional restraint to an
atom w.r.t an arbitrary coordinate.

Say for eg. I want to constrain the distance between an atom and the
origin(0,0,0) during MD.
Is it possible to  do that in GROMACS.

Thanks
Krishna
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Re: [gmx-users] positional restraint

2009-10-23 Thread Justin A. Lemkul



krishnakumar wrote:

Hi,

I was wondering if it would be possible to apply positional restraint to 
an atom w.r.t an arbitrary coordinate.


Say for eg. I want to constrain the distance between an atom and the 
origin(0,0,0) during MD.

Is it possible to  do that in GROMACS.



I don't believe there is a way to implement an absolute restraint, nor do I 
immediately see why it would be meaningful.  You could, however, build your 
system so the atom of interest is placed appropriately and simply use position 
restraints on it.


-Justin


Thanks
Krishna




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--


Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin


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