Re: [gmx-users] Membrane protein simulation isotropic vs semiisotropic

2019-06-15 Thread Justin Lemkul
On 6/15/19 8:56 AM, paul buscemi wrote: The pressure on a (real-life) membrane is not isotropic, edges are under tension. so using the p-couple “surface-tension” - with water layers is appropriate. Applying surface tension and semiisotropic coupling will result in different ensembles. Th

Re: [gmx-users] Membrane protein simulation isotropic vs semiisotropic

2019-06-15 Thread paul buscemi
The pressure on a (real-life) membrane is not isotropic, edges are under tension. so using the p-couple “surface-tension” - with water layers is appropriate. If you use p-couple = isotropic you should end up with a micelle because the hydrophobic effects are significant. p > On Jun 14,

Re: [gmx-users] Membrane protein simulation isotropic vs semiisotropic

2019-06-14 Thread Prasanth G, Research Scholar
Dear Bratin, When I am using a semiisotropic condition the pbc box is deforming/compressing pushing the lipid bilayer apart. I am attaching the screenshots of the system at the beginning(normal.png) of production run as well as at the end of 30ns simulation (elongated.png) for your reference. Thi

Re: [gmx-users] Membrane protein simulation isotropic vs semiisotropic

2019-06-14 Thread Bratin Kumar Das
Hi Why you want to do isotropic? On Fri 14 Jun, 2019, 12:16 PM Prasanth G, Research Scholar, < prasanthgha...@sssihl.edu.in> wrote: > Dear all, > > Can someone please tell me if it is okay to use isotropic pcoupltype for a > membrane protein simulation? Are there any disadvantages? > > Also,

[gmx-users] Membrane protein simulation isotropic vs semiisotropic

2019-06-13 Thread Prasanth G, Research Scholar
Dear all, Can someone please tell me if it is okay to use isotropic pcoupltype for a membrane protein simulation? Are there any disadvantages? Also, why is semiisotropic preferred over isotropic, in membrane protein simulations.. Thank you. -- Regards, Prasanth. -- Gromacs Users mailing list