[gmx-users] adding constraints

2010-05-20 Thread subarna thakur
Hi all,
I want to add constraints for bond length of a ligand.Where do I place the 
constraints statement in the .rtp file or in the .top file? 
 Subarna Thakur


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Re: [gmx-users] adding constraints

2010-05-20 Thread Justin A. Lemkul



subarna thakur wrote:

Hi all,
I want to add constraints for bond length of a ligand.Where do I place 
the constraints statement in the .rtp file or in the .top file? 
 


Are you looking to constrain only one single bond length?  If so, just add a 
[constraints] section to your topology.  The .rtp file won't do you any good, 
unless you're looking to build a complete .rtp entry and re-process with 
pdb2gmx, but I don't know if [constraints] is a valid entry in an .rtp file.


If you're looking to constrain all bond lengths, leave the topology alone and 
add constraints = all-bonds in your .mdp file.


-Justin


Subarna Thakur



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Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
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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