[gmx-users] Chloroform (CHCl3) solvent box for G53a5 force field

2009-10-20 Thread Pablo Englebienne

Hi all,

I'm trying to simulate a small molecule in a chloroform box using the 
GROMOS G53a5 forcefield. I realized that the parameters for the solvent 
are present in the ffG53a5.rtp file, however I could not find a CHCl3 
solvent box included in GROMACS. I did find, however, a CHCl3 solvent 
box equilibrated by PeiQuan Chen 
(http://lists.gromacs.org/pipermail/gmx-users/2003-May/005572.html) at 
http://www.gromacs.org/index.php?title=Download_%26_Installation/User_contributions/Molecule_topologies 
.


I also saw mention of a box for the Amber forcefield, that is now 
included in AmberTools (amber10/dat/solvents/cform/cform.pdb and 
chcl3_equil.pdb.1). I took this one and I'm equilibrating it to use it 
later.


In the mean time, I wanted to know if I overlooked something, and there 
is a CHCl3 box to use with the GROMOS forcefield?


Thanks!

--
Pablo Englebienne, PhD
Institute of Complex Molecular Systems (ICMS)
Eindhoven University of Technology, TU/e
PO Box 513, HG -1.26
5600 MB Eindhoven, The Netherlands
Tel +31 40 247 5349

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Re: [gmx-users] Chloroform (CHCl3) solvent box for G53a5 force field

2009-10-20 Thread Justin A. Lemkul



Pablo Englebienne wrote:

Hi all,

I'm trying to simulate a small molecule in a chloroform box using the 
GROMOS G53a5 forcefield. I realized that the parameters for the solvent 
are present in the ffG53a5.rtp file, however I could not find a CHCl3 
solvent box included in GROMACS. I did find, however, a CHCl3 solvent 
box equilibrated by PeiQuan Chen 
(http://lists.gromacs.org/pipermail/gmx-users/2003-May/005572.html) at 
http://www.gromacs.org/index.php?title=Download_%26_Installation/User_contributions/Molecule_topologies 
.


I also saw mention of a box for the Amber forcefield, that is now 
included in AmberTools (amber10/dat/solvents/cform/cform.pdb and 
chcl3_equil.pdb.1). I took this one and I'm equilibrating it to use it 
later.


In the mean time, I wanted to know if I overlooked something, and there 
is a CHCl3 box to use with the GROMOS forcefield?




Not one that is officially distributed.  If it was, it would be the 
/share/gromacs/top subdirectory with other solvent topologies and structures. 
Probably your best bet is to use the one in the User Contributions section, 
unless you feel the need to create your own and start from scratch.


-Justin


Thanks!



--


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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