Re: [gmx-users] DNA simulation and choice of temperature coupling groups

2018-08-29 Thread Dallas Warren
http://dx.doi.org/10.1021/ct8000365 Catch ya, Dr. Dallas Warren Drug Delivery, Disposition and Dynamics Monash Institute of Pharmaceutical Sciences, Monash University 381 Royal Parade, Parkville VIC 3052 dallas.war...@monash.edu - When the only tool you own is a

Re: [gmx-users] [BULK][EXT] Re: PDB code

2018-08-29 Thread Justin Lemkul
On 8/29/18 2:34 PM, Nick Johans wrote: Thank you dear justin. I'll read the paper. But practically it is mentioned that (for simulation) it has 51 residues which exactly equal to A,B chain. And i hope you answer the question about protonating " Residues B23-B30 were removed from insulin

Re: [gmx-users] [BULK][EXT] Re: PDB code

2018-08-29 Thread Nick Johans
Thank you dear justin. I'll read the paper. But practically it is mentioned that (for simulation) it has 51 residues which exactly equal to A,B chain. And i hope you answer the question about protonating " Residues B23-B30 were removed from insulin 43 residues. The C-terminal carboxyl groups

Re: [gmx-users] [BULK][EXT] Re: PDB code

2018-08-29 Thread Justin Lemkul
On 8/29/18 2:13 PM, Nick Johans wrote: Thank you so much Iris. want to simulate a protwin interaction with nanotube. The question is the pdb file structure. As i have not simulate protein before and i know that insulin has 2 chains the question is that why in pdbcode(3e7y) insulin has 4

Re: [gmx-users] [BULK][EXT] Re: PDB code

2018-08-29 Thread Nick Johans
Thank you so much Iris. want to simulate a protwin interaction with nanotube. The question is the pdb file structure. As i have not simulate protein before and i know that insulin has 2 chains the question is that why in pdbcode(3e7y) insulin has 4 chain? On Wed, 29 Aug 2018, 22:00 Smith, Iris,

Re: [gmx-users] Heterogeneous GPU cluster question?

2018-08-29 Thread Szilárd Páll
Hi, You can use multiple types of GPUs in a single run, but it won't be ideal. Also, with Volta GPUs you'll probably be better off also offloading PME which won't scale to more than 2-3 GPUs, so probably you'll not want to use more than 2 GPUs in run with Volta. -- Szilárd On Tue, Aug 28, 2018

Re: [gmx-users] [BULK][EXT] Re: PDB code

2018-08-29 Thread Smith, Iris
Hi Nick, I think the big question is what are you trying to simulate – what is your goal? It is critical that you now your protein (e.g. how was it crystalized, any missing atoms, missing residues, hetero atoms, ligands). I think prior to building your system you should first understand your

Re: [gmx-users] PDB code

2018-08-29 Thread Nick Johans
Sorry, i have just removed C,D chains by pymol and then started simulating(without adding any terminal or H,...)... but after grompp, the system had charges and were not integer. Is it because of i didn't add terminals? I use AMBER99SB forcefield and as you know it doesn't work with -ter but i

[gmx-users] PDB code

2018-08-29 Thread Nick Johans
Hi, I'm a beginner in GROMACS and MD. I used pdb2gmx for having topology file of PDB ID: 3e7y (lnsuline). It has 4 chains A,B,C,D after pdb2gmx. When you google it, it is mentioned that insuline has 2 chains named A,B. So why it's pdb code has 4 chains? Are they couple of each other? If yes and i

Re: [gmx-users] restrain ligand in free energy.

2018-08-29 Thread hoangtung9597
Tks for your reply. But this restrain -fc 1000 1000 1000 i ready know  it is using for nvt npt . But for md run. They don't use that restrain. Because i am going to calculate free energy. Dental G restrain on .  Tin nhắn gốc Từ: Bratin Kumar Das <177cy500.bra...@nitk.edu.in>

Re: [gmx-users] Gromacs 2018.3 install warning

2018-08-29 Thread Du, Yu
All right. Thanks for reply. At2018-08-29 20:04:49,Paul bauerwrote: > Hello, > > we have not yet full support for gcc-8, but this is being worked on. You > can disregard those warnings safely for now. > > /Paul > > On 29/08/2018 14:01, Du, Yu wrote: > > Dear gmx-users, > > > > > > > > > > I

Re: [gmx-users] restrain ligand in free energy.

2018-08-29 Thread Bratin Kumar Das
Hi , Gromacs has genrestr programme...In protein-ligand complex tutorial it is mentioned(how to restrain ligand) The command is gmx genrestr -f ligand.gro -o ligand_posre.itp -fc 1000 1000 1000 After that you need to include in the main topology On Wed 29 Aug, 2018, 12:37 PM Tùng Hoàng,

Re: [gmx-users] Gromacs 2018.3 install warning

2018-08-29 Thread Paul bauer
Hello, we have not yet full support for gcc-8, but this is being worked on. You can disregard those warnings safely for now. /Paul On 29/08/2018 14:01, Du, Yu wrote: Dear gmx-users, I was installing gromacs-2018.3 with gcc8.1, `make -j 24` gave the following warning: `make check`

[gmx-users] Gromacs 2018.3 install warning

2018-08-29 Thread Du, Yu
Dear gmx-users, I was installing gromacs-2018.3 with gcc8.1, `make -j 24` gave the following warning: `make check` with regression test set 100% passed. Hope next version will fix these warnings. ##Warnings##

Re: [gmx-users] gromacs.org_gmx-users Digest, Vol 172, Issue 89

2018-08-29 Thread Dan Gil
I think that may indicate that their is something wrong with your input files, possibly the configuration. Did you check if the configuration has any bad contacts? On Wed, Aug 29, 2018 at 7:15 AM sagar bathla wrote: > hi Dan, > > I got the warnings at the start of the mdrun. > > Regards >

[gmx-users] DNA simulation and choice of temperature coupling groups

2018-08-29 Thread Athina Meletiou
Hello all, I was looking into performing some MD simulations of a DNA molecule - as a control to simulations of the same DNA molecule along with its binding protein. However I’m getting a bit confused about how to use temperature coupling groups. I am torn between simply using one group

Re: [gmx-users] free energy of complex system

2018-08-29 Thread Dallas Warren
What Gibbs energy are you trying to calculate for the system? Of what process or transformation? On Wed, 29 Aug. 2018, 3:56 pm abhisek Mondal, wrote: > Hi, > I'm just trying to calculate free energy of a complex system using > following method: > >

Re: [gmx-users] gromacs.org_gmx-users Digest, Vol 172, Issue 89

2018-08-29 Thread sagar bathla
hi Dan, I got the warnings at the start of the mdrun. Regards Sagar On Wed, Aug 29, 2018 at 3:30 PM < gromacs.org_gmx-users-requ...@maillist.sys.kth.se> wrote: > Send gromacs.org_gmx-users mailing list submissions to > gromacs.org_gmx-users@maillist.sys.kth.se > > To subscribe or

Re: [gmx-users] rotation of atoms by more than 90 degrees & LINCS Warnings

2018-08-29 Thread Dan Gil
Hi Sagar, At which time step do you get LINCS warnings? Also, please see: http://www.gromacs.org/Documentation/Errors#LINCS.2fSETTLE.2fSHAKE_warnings Dan On Tue, Aug 28, 2018 at 3:19 AM sagar bathla wrote: > Dear all, > > My system consists of 2 orthorhombic parallel graphene sheets in a big

[gmx-users] restrain ligand in free energy.

2018-08-29 Thread Tùng Hoàng
Hello everyone, i am trying to calculate free energy for complex protein-ligand. but in tutorial it just have methane in water. So i find this http://www.alchemistry.org/wiki/Absolute_Binding_Free_Energy_-_Gromacs_2016 but the problem is i don know how to restrain this ligand. in file complex.top