Re: [gmx-users] Potential Energy is positive on minimizing the system

2017-02-24 Thread Anurag Dobhal
Thanks a lot! *Anurag Dobhal* *Graduate Student (Bioprocess Technology)* *Institute of Chemical Technology, Mumbai* *Contact: +91 8898486877* On Thu, Feb 23, 2017 at 9:10 PM, Justin Lemkul wrote: > > > On 2/23/17 9:07 AM, Anurag Dobhal wrote: > >> Dear Justin, >> >> I would like to know wea

Re: [gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Justin Lemkul
On 2/23/17 9:07 AM, Anurag Dobhal wrote: Dear Justin, I would like to know weather the parameters below are correct for NVT equilibiration whicle doig a simulation in vaccum ? define = -DPOSRES ; position restrain the protein If you don't have solvent, there's no reason to restrain anything

Re: [gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Anurag Dobhal
Dear Justin, I would like to know weather the parameters below are correct for NVT equilibiration whicle doig a simulation in vaccum ? define = -DPOSRES ; position restrain the protein ; Run parameters integrator = md ; leap-frog integrator nsteps = 5 ; 2 * 5 = 100 ps dt = 0.002 ; 2 fs ;

Re: [gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Anurag Dobhal
Thank you ! *Anurag Dobhal* *Graduate Student (Bioprocess Technology)* *Institute of Chemical Technology, Mumbai* *Contact: +91 8898486877* On Thu, Feb 23, 2017 at 7:09 PM, Justin Lemkul wrote: > > > On 2/23/17 8:29 AM, Anurag Dobhal wrote: > >> Thank you. Should I not use PME and PBC while

Re: [gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Justin Lemkul
On 2/23/17 8:29 AM, Anurag Dobhal wrote: Thank you. Should I not use PME and PBC while performing simulations in Vaccum ? No, you should not. Use no PBC and infinite cutoffs (all cutoffs set to zero) to mimic vacuum conditions. Otherwise you're simulating some type of diffusely occupied

Re: [gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Anurag Dobhal
Thank you. Should I not use PME and PBC while performing simulations in Vaccum ? -- *DISCLAIMER:* *This communication is intended only for the person or entity to which it is addressed and may contain confidential and / or privileged material. Any review, retransmission, dissemination or oth

Re: [gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Justin Lemkul
On 2/23/17 8:23 AM, Anurag Dobhal wrote: Dear gromacs users, I am Simulating a polymer chain having 20 monomer units. I am doing the simulation in the vaccum (I am not solvating the system). The total charge in my polymer chain is +9 and I am not nutrealizing the system as I was suggested earl

[gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Anurag Dobhal
Dear gromacs users, I am Simulating a polymer chain having 20 monomer units. I am doing the simulation in the vaccum (I am not solvating the system). The total charge in my polymer chain is +9 and I am not nutrealizing the system as I was suggested earlier that if we are simulating a system in a

[gmx-users] Potential Energy is positive on minimizing the system

2017-02-23 Thread Anurag Dobhal
Dear gromacs users, I am Simulating a polymer chain having 20 monomer units. I am doing the simulation in the vaccum (I am not solvating the system). The total charge in my polymer chain is +9 and I am not nutrealizing the system as I was suggested earlier that if we are simulating a system in a