[gmx-users] Force field parameters in water or in vacuum?

2008-05-22 Thread Chih-Ying Lin
Hi For one molecule, will Gromacs give the same set of force field parameters to this molecule no matter this molecule is put in water or in vacuum? The bond length, the bond angle, and the dihedral angles of the same molecule will be different in water and in vacuum. So, will the force field param

[gmx-users] Force field parameters in water or in vacuum?

2008-05-22 Thread chris . neale
Please don't post to the users list and the developers list simultaneously with the same question. I think this is more appropriately a users list question. I guess if you also get a reply on the developers list then it pays to post to both, but the idea is to put it only in one space. H

[gmx-users] Force field parameters in water or in vacuum?

2008-05-23 Thread Chris Neale
Interesting, I was not aware of that. For the simulations that I was discussing, we did not see that type of collapse on the 10ns timescale, although we started from extended structures and used very high temperatures since we were only interested in using MD as one of many methods to generate a

Re: [gmx-users] Force field parameters in water or in vacuum?

2008-05-22 Thread Justin A. Lemkul
Quoting Chih-Ying Lin <[EMAIL PROTECTED]>: > Hi > For one molecule, will Gromacs give the same set of force field > parameters to this molecule no matter this molecule is put in water or > in vacuum? Depending on what's defined within the specific force field, yes. For example, ffG43b1 is a "vac

Re: [gmx-users] Force field parameters in water or in vacuum?

2008-05-22 Thread Mark Abraham
Chih-Ying Lin wrote: Hi For one molecule, will Gromacs give the same set of force field parameters to this molecule no matter this molecule is put in water or in vacuum? The bond length, the bond angle, and the dihedral angles of the same molecule will be different in water and in vacuum. So, wil

Re: [gmx-users] Force field parameters in water or in vacuum?

2008-05-22 Thread David van der Spoel
[EMAIL PROTECTED] wrote: Please don't post to the users list and the developers list simultaneously with the same question. I think this is more appropriately a users list question. I guess if you also get a reply on the developers list then it pays to post to both, but the idea is to put it o