Re: [gmx-users] Syntax Error when Adding Ions to DNA/ligand complex

2018-08-30 Thread Dallas Warren
http://www.gromacs.org/Documentation/Errors#Invalid_order_for_directive_xxx 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

[gmx-users] Syntax Error when Adding Ions to DNA/ligand complex

2018-08-30 Thread Wahl, David M
Hello GROMACS users, I am attempting to run a molecular dynamics simulation with DNA complexed with a small molecule. I have processed the molecule with ACPYPE, using the GAFF, and merged the topology files into a single topology file. However, when I attempt to use the “grompp” command

[gmx-users] Force Calculation through Pulling

2018-08-30 Thread Samieegohar, Mohammadreza
Hello, I am using constant velocity method in order to pull a nanoparticle through a lipid bilayer in water solution in Gromacs. I should calculate the simultaneous force in order to take an integral over position to obtain the PMF. Do you know how can I measure the simultaneous force in

[gmx-users] GROMACS XRD analysis

2018-08-30 Thread Li, Shi
Dear GMX users, I am trying to do x-ray diffraction analysis on my simulation results. I found in the old 4.6 version, there was an option to do this under the g_rdf module with -energy flag, but then it was removed after 5.0. The only similar module I can find now is gmx saxs module. I compared

[gmx-users] Documentation on gmx densorder?

2018-08-30 Thread Smith, Micholas D.
Dear GMX users, I was wondering if anyone has used the gmx densorder (originally g_densorder) in the past utility in the past. I have system with an interface and the idea of " gmx densorder reduces a two-phase density distribution along an axis, computed over a MD trajectory, to 2D surfaces

[gmx-users] (no subject)

2018-08-30 Thread Rakesh Mishra
Dear gromacs user. What should be the value of spring constant (k) and rate if one wants to pull dsDNA (say bDNA of 16 bp ) surrounded by aqua (water model) during pulling using umbrella sampling . -- *With Best-Rakesh Kumar Mishra* * (RA)CSD SINP Kolkata, India* *E-mail -

[gmx-users] free energy of restraints

2018-08-30 Thread asaffarhi
Dear Gromacs Users, Hi, we have added a free energy calculation of a dihedral restraint to the free energy website. Now it has exact analytical free energy calculations of all the restraints (can be used in absolute free energy calculations) and the standard bonded terms