Is there a Gromacs Tutorial to add a residues to a force field and modifying a .rtp, .itp, atomtypes.atp and residuetypes.dat file?

If anyone have gromacs tutorial to a new residue to the topology. The protein which I am working on has 4 NAG (N-acetyl Glucosamine) and 1 ALS (2-amino 3-oxopropionic acid). These residues were...

05 June 2015 2,026 3 View

Why do I get huge fluctuations in RMSD when I simulate a protein in 20ns using Amber99sb force field in Gromacs 5.0.4?

02 March 2015 5,987 7 View

How to include the residues N-acetyl Glucosamine (NAG) and 2-amino 3-oxopropionic acid (ALS) in gromacs 4.6.5 version's topology ?

My protein has 4 NAG and 1 ALS residue in its sequence. When I tried to simulate the protein using gromos96 53 a6 force field , it's showing a fatal error as: residue 'ALS' not found in residue...

31 December 2014 5,993 4 View

Can anyone tell how to install gromacs on Ubuntu 14.04 ?

I am using ubuntu 14.04 version, please tell me which version of GROMACS I have to use for this ubuntu 14.04 version. And give me the Installation steps. I have installed cmake and c++98 compiler.

11 December 2014 7,180 4 View

What are the installation and simulation procedures for the AMBER tool?

See above

04 May 2014 912 1 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View