Re: [gmx-users] Reorder of residues and atoms

2011-07-15 Thread Justin A. Lemkul
xiaowu759 wrote: Dear gmxers, While performing EM using GMX, I find in the resullting gro file, residues and atoms are reordered. Do this affect the simulation? Please give me some hints. Thanks a lot! Before EM,gro file: 1 HmP .. 2 HmP .. . 20 MmP ... 21 MmP ..

[gmx-users] Reorder of residues and atoms

2011-07-15 Thread xiaowu759
Dear gmxers, While performing EM using GMX, I find in the resullting gro file, residues and atoms are reordered. Do this affect the simulation? Please give me some hints. Thanks a lot! Before EM,gro file: 1 HmP .. 2 HmP .. . 20 MmP ... 21 MmP .. .

Re: [gmx-users] (no subject)

2011-07-15 Thread KS Rotondi
thumbs up per tuti On Jul 15, 2011, at 6:23 PM, Justin A. Lemkul wrote: Sara baretller wrote: between 2.2 and 2.7 M. Well, double check your work. Your previous post contained several units that made no sense, so I don't know if you've done the calculations correctly. For adding ions,

Re: [gmx-users] (no subject)

2011-07-15 Thread Justin A. Lemkul
Sara baretller wrote: between 2.2 and 2.7 M. Well, double check your work. Your previous post contained several units that made no sense, so I don't know if you've done the calculations correctly. For adding ions, just use genion -conc and it will do the work for you. That way, you'll

Re: [gmx-users] (no subject)

2011-07-15 Thread Sara baretller
between 2.2 and 2.7 M. Thank you On Fri, Jul 15, 2011 at 5:40 PM, Justin A. Lemkul wrote: > > > Sara baretller wrote: > >> thank you for your help, will it be alot to add 700 ions to a system made >> of water and proteins that is 4000 molecules >> > > That would certainly be an extraordinaril

Re: [gmx-users] (no subject)

2011-07-15 Thread Justin A. Lemkul
Sara baretller wrote: thank you for your help, will it be alot to add 700 ions to a system made of water and proteins that is 4000 molecules That would certainly be an extraordinarily high concentration. What is your target molarity? -Justin -- J

Re: [gmx-users] (no subject)

2011-07-15 Thread Sara baretller
thank you for your help, will it be alot to add 700 ions to a system made of water and proteins that is 4000 molecules -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/mailman/listinfo/gmx-users Please search the archive at http://www.gromacs.org/Support/Mailing_Lists/S

Re: [gmx-users] (no subject)

2011-07-15 Thread Justin A. Lemkul
Seibold, Stephen wrote: I am sorry if this is a simple question, but I have spent the better part of the day attempting to figure it out using gromacs mailing list..etc.. Here is the problem. When I attempt to run genbox my output produces the error that "spc216.gro cannot be found in your

[gmx-users] (no subject)

2011-07-15 Thread Seibold, Stephen
I am sorry if this is a simple question, but I have spent the better part of the day attempting to figure it out using gromacs mailing list..etc.. Here is the problem. When I attempt to run genbox my output produces the error that "spc216.gro cannot be found in your GMXLIB path. Here is what I'v

[gmx-users] Re: Connecting sidechains in gromacs file

2011-07-15 Thread Zack Scholl
Thanks Baofu. It seems that my topology file indeed is missing bonds for the sidechains! I am using a webtool so I am wondering whether the tool does not support these residues. > are you sure that your topology file is correctly written? On 07/15/2011 11:34 AM, Zack Scholl wrote: > Hi all - >

Re: [gmx-users] (no subject)

2011-07-15 Thread Justin A. Lemkul
Sara baretller wrote: yes i had X M and i convert it to X molecule / mol using Avogadro's number. but how do i get only molecules or ions I'm not following your notation. If you've got a given concentration (mol/L), you obtain molecules/L by using Avogadro's number. Then just multiply

Re: [gmx-users] (no subject)

2011-07-15 Thread Sara baretller
yes i had X M and i convert it to X molecule / mol using Avogadro's number. but how do i get only molecules or ions On Fri, Jul 15, 2011 at 1:52 PM, Justin A. Lemkul wrote: > > > Sara baretller wrote: > >> Hi All >> >> I have a question about adding ions to the system. using Genion one can >>

Re: [gmx-users] (no subject)

2011-07-15 Thread Justin A. Lemkul
Sara baretller wrote: Hi All I have a question about adding ions to the system. using Genion one can add ions but how can you convert molecule/mol to number of molecules or ions ?? let say 2 e 23 molecule/mol to X number of molecule or ions Use Avogadro's number. -Justin -- ==

[gmx-users] (no subject)

2011-07-15 Thread Sara baretller
Hi All I have a question about adding ions to the system. using Genion one can add ions but how can you convert molecule/mol to number of molecules or ions ?? let say 2 e 23 molecule/mol to X number of molecule or ions -- gmx-users mailing listgmx-users@gromacs.org http://lists.gromacs.org/m

Re: [gmx-users] Weird problem

2011-07-15 Thread lina
There might be relevant to walltime settings. There might be a default limit. try qsub -l walltime=1000:00:00 yourjob adjust the time or google further to meet your need. On Fri, Jul 15, 2011 at 2:27 AM, Justin A. Lemkul wrote: > > > Sayan Bagchi wrote: >> >> Hello All, >> I am having a weird

Re: [gmx-users] angle between two domains connected at a hinge

2011-07-15 Thread andrea spitaleri
Hi, have look to the orient package for vmd: http://www.ks.uiuc.edu/Research/vmd/script_library/scripts/orient/ In the vmd script repository there is also a python script: http://www.ks.uiuc.edu/Research/vmd/script_library/scripts/fit_angle/ I have done a script using orient which calculate th

[gmx-users] angle between two domains connected at a hinge

2011-07-15 Thread maria goranovic
There must be several tools to calculate the angle between two domains connected at a hinge. I was wondering if someone has suggestions on any tools, or whether it is possible to do this using a vmd plugin directly for a trajectory? IN my case, I have a reasonable good idea where the hinge is. I wa

Re: [gmx-users] Re: Frame/conformation in trajectory is ignored

2011-07-15 Thread Mark Abraham
On 15/07/2011 7:31 PM, Martin Kamp Jensen wrote: Hello, I am trying to evaluate energy values of several conformations using a (pseudo)trajectory. Currently, I am concatenating GROMOS-96 files (.g96) and using that as a trajectory. For some reason the second conformation in a trajectory is ig

Re: [gmx-users] Connecting sidechains in gromacs file

2011-07-15 Thread Baofu Qiao
are you sure that your topology file is correctly written? On 07/15/2011 11:34 AM, Zack Scholl wrote: Hi all - I'm running a simulation that has an implicit solvent. I ran my simulation and it seems that everything not connected to the backbone has floated off into space. Is there a way to de

[gmx-users] Connecting sidechains in gromacs file

2011-07-15 Thread Zack Scholl
Hi all - I'm running a simulation that has an implicit solvent. I ran my simulation and it seems that everything not connected to the backbone has floated off into space. Is there a way to define connections so that side chains stay connected? Has anyone had this problem before? Thanks, Since

[gmx-users] Re: Frame/conformation in trajectory is ignored

2011-07-15 Thread Martin Kamp Jensen
Hello, I am trying to evaluate energy values of several conformations using a (pseudo)trajectory. Currently, I am concatenating GROMOS-96 files (.g96) and using that as a trajectory. For some reason the second conformation in a trajectory is ignored. So e.g. if I have three conformations (1.g96, 2