Re: [gmx-users] Unable to swith from NVT to NPT

2007-05-03 Thread Mark Abraham
Stéphane Téletchéa wrote: I'm probalby doing something wrong but since neither the manual nor the mailing list has driven me to the correct answer, i'm asking you the problem. Thanks in advance for you answers and time. I want to simulate my system with short NVT (for temperature equilibratio

Re: [gmx-users] xmgrace

2007-05-03 Thread Mark Abraham
Michal Walczak wrote: Dear Gromacs users, I'd like to ask if anyone could tell me how to open *.rms file in xmgrace, if it's possible of course or how to convert such a file into *.xvg? That *.rms file is an output from NWChem. Are the xmgrace or NWChem mailing lists the right places to be a

RE: [gmx-users] Carbon Nanotube-Protein interaction

2007-05-03 Thread Dallas B. Warren
See section 5.6 of the manual, in particular 5.6.2 Basically, you have two .itp files then you call them within the .top file using an include command. For solvation, doesn't matter what the topology is, solvation involves simply adding water molecules to the coordinate file, .gro So just take t

[gmx-users] Carbon Nanotube-Protein interaction

2007-05-03 Thread George Abadir
Hi, I want to perform a simulation of CNT-protein interaction. I have a topology file for the carbon nanotube alone and a topology file for the protein alone. I don't know how to combine them, and if after them the result can be solvated as usual using genbox. Your help is much appreciated,

[gmx-users] xmgrace

2007-05-03 Thread Michal Walczak
Dear Gromacs users, I'd like to ask if anyone could tell me how to open *.rms file in xmgrace, if it's possible of course or how to convert such a file into *.xvg? That *.rms file is an output from NWChem. Best wishes, Michal Walczak ___ gmx-users mai

Re: [gmx-users] Compressibility issue - real concern

2007-05-03 Thread Erik Lindahl
On May 3, 2007, at 5:36 PM, Jones de Andrade wrote: Hi Erik. I was thinking something about it exactly now. I mean, Berk quoted that the scalling goes with beta/tau in Berendsen, and with beta/ tay^2 in Parrinello. I mean, in a similar implementation, how should it go for a nosè implement

[gmx-users] Unable to swith from NVT to NPT

2007-05-03 Thread Stéphane Téletchéa
I'm probalby doing something wrong but since neither the manual nor the mailing list has driven me to the correct answer, i'm asking you the problem. Thanks in advance for you answers and time. I want to simulate my system with short NVT (for temperature equilibration) and then NPT since i've

Re: [gmx-users] How to preserve the original sequence number

2007-05-03 Thread Stéphane Téletchéa
Rui Li a écrit : Dear all, I ran a simulation of a ligand bound to an enzyme. When I check the pdb file,I find the residue sequence number has been modified. But I want to preserve the original sequence number.Does anyone knows how I can do this ? thanks in advance Have a look on the mailing

Re: [gmx-users] Compressibility issue - real concern

2007-05-03 Thread Jones de Andrade
Hi Erik. I was thinking something about it exactly now. I mean, Berk quoted that the scalling goes with beta/tau in Berendsen, and with beta/tay^2 in Parrinello. I mean, in a similar implementation, how should it go for a nosè implementation? Also, what would be a good value for tau_p so? I was

Re: [gmx-users] Compressibility issue - real concern

2007-05-03 Thread Jones de Andrade
On 5/3/07, Erik Lindahl <[EMAIL PROTECTED]> wrote: Hi, On May 3, 2007, at 12:37 PM, Jones de Andrade wrote: Hi Berk! Thanks for your so fast answer! I'll try to look for a different tau_p. I would really feel 4 ps a too high value, even for water systems, but will look around before decision.

RE: [gmx-users] PVT-simulation

2007-05-03 Thread Jiang ran
> Date: Thu, 3 May 2007 23:42:28 +1000> From: [EMAIL PROTECTED]> To: > gmx-users@gromacs.org> Subject: Re: [gmx-users] PVT-simulation> > Jiang ran > wrote:> > Hello everybody,> > > > Thank you all for your suggestions ,> > I > red the Gromacs software package manual but found that PVT was not

Re: [gmx-users] PVT-simulation

2007-05-03 Thread Erik Marklund
3 maj 2007 kl. 15.42 skrev Mark Abraham: Jiang ran wrote: Hello everybody, Thank you all for your suggestions , I red the Gromacs software package manual but found that PVT was not implemented yet in the Gromacs software package. I want to conserve both volume and pressure because my p

Re: [gmx-users] Temperature increase

2007-05-03 Thread Mark Abraham
Zuzana Benkova wrote: I have run an NVE simulation of decamer of glycin first with PBC (coulombtype=Cut-off) and later without PBC (coulombtype=PME). You can't have a non-periodic system with PME. The gen-temp was set to 300K with option gen-vel=yes. The temperature start to raise during sim

Re: [gmx-users] PVT-simulation

2007-05-03 Thread Mark Abraham
Jiang ran wrote: > Hello everybody, > > Thank you all for your suggestions , > I red the Gromacs software package manual but found that PVT was not > implemented yet in the Gromacs software package. I want to conserve > both volume and pressure because my professor says that they are both >

[gmx-users] Temperature increase

2007-05-03 Thread Zuzana Benkova
I have run an NVE simulation of decamer of glycin first with PBC (coulombtype=Cut-off) and later without PBC (coulombtype=PME). The gen-temp was set to 300K with option gen-vel=yes. The temperature start to raise during simulation and finaly the following messages appeared in log file Shake did no

[gmx-users] (no subject)

2007-05-03 Thread Zuzana Benkova
test ___ gmx-users mailing listgmx-users@gromacs.org http://www.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/search before posting! Please don't post (un)subscribe requests to the list. Use the www inter

RE: [gmx-users] PVT-simulation

2007-05-03 Thread Jiang ran
> Date: Thu, 26 Apr 2007 15:52:10 +0200> From: [EMAIL PROTECTED]> To: > gmx-users@gromacs.org> Subject: Re: [gmx-users] PVT-simulation> > Jiang ran > wrote:> > Hello everybody,> > My name is called Jiong and I'm new to the > GROMACS simulation software > > package and the field of MD.> > I have

Re: [gmx-users] l-bfgs

2007-05-03 Thread Sona Aramyan
Thanks very much for you advises. Actually I just made one molecule of dppc using information from leterature about its bond lenghts and angles and so on... and then run md with that one molecule and then multipled it. First I made 16 dppc bilayer with 480 water and then from that 16dppc I made 32

Re: [gmx-users] Compressibility issue - real concern

2007-05-03 Thread Erik Lindahl
Hi, On May 3, 2007, at 12:37 PM, Jones de Andrade wrote: Hi Berk! Thanks for your so fast answer! I'll try to look for a different tau_p. I would really feel 4 ps a too high value, even for water systems, but will look around before decision. Anyway, I'm still concerned about the compressi

Re: [gmx-users] Compressibility issue - real concern

2007-05-03 Thread Jones de Andrade
Hi Berk! Thanks for your so fast answer! I'll try to look for a different tau_p. I would really feel 4 ps a too high value, even for water systems, but will look around before decision. Anyway, I'm still concerned about the compressibility value. Long time ago in this list I came to this questio

RE: [gmx-users] Compressibility issue - real concern

2007-05-03 Thread Berk Hess
From: "Jones de Andrade" <[EMAIL PROTECTED]> Reply-To: Discussion list for GROMACS users To: "Discussion list for GROMACS users" Subject: [gmx-users] Compressibility issue - real concern Date: Thu, 3 May 2007 06:33:12 -0300 Hi all. Well, I'm having a great problem in some NpT simulations I

[gmx-users] Compressibility issue - real concern

2007-05-03 Thread Jones de Andrade
Hi all. Well, I'm having a great problem in some NpT simulations I'm running here, which leaded me to some concerns. Let me try to explain the situation: Ok, I know: everywhere, including this list, amber list and any computational chemistry list informs that the compressibility of the liquid do

Re: [gmx-users] rotational fit in XY plane only

2007-05-03 Thread Berk Hess
Hi, I would say that in most cases when you only want to remove rotation in the xy plane, you also only want to remove translation in the xy plane. But apparently for your system this is not the case. I have just fixed a bug in the xy fit that could cause mirror imaging of the system (I indeed h

Re: [gmx-users] cutting out a portion of a crystal using triclinic box

2007-05-03 Thread David van der Spoel
Mark Abraham wrote: Tsjerk Wassenaar wrote: Hi Andrea, On 5/3/07, Mark Abraham <[EMAIL PROTECTED]> wrote: Andrea Robben Browning wrote: > I am trying to cut out a portion of a large equilbrated crystal to make > a smaller crystal. I have been using the genbox command but since it > tries to

Re: [gmx-users] GROMACS Wiki

2007-05-03 Thread Florian Haberl
hi, On Thursday, 3. May 2007 09:03, Mark Abraham wrote: > David van der Spoel wrote: > > The one single reason for combining these things would be the abilitiy > > to reuse Joomla passwords. We already have separate passwords for > > bugzilla, website and mailing lists. On the other hand since br

Re: [gmx-users] GROMACS Wiki

2007-05-03 Thread Mark Abraham
David van der Spoel wrote: The one single reason for combining these things would be the abilitiy to reuse Joomla passwords. We already have separate passwords for bugzilla, website and mailing lists. On the other hand since browsers memorize passwords for you it may not be that big a deal. W