While doing molecular dynamics (MD) simulation, it can be difficult to calculate the number of steps or nsteps for an MD run accurately. In this article, we will learn to calculate nsteps for an MD run. (more…)

We have provided a few articles on GROMACS installation on Ubuntu. In this article, we are going to install GROMACS [1] on Mac OS. (more…)

It is important to see the behavior of protein during an MD simulation. This can be achieved by taking snapshots in the form of PDB format. In this article, we have provided a few commands that you can use to take snapshots of a complete system or protein during MD simulation. (more…)

GROMACS stands for GROningen MAchine for Chemical Simulations [1]. It is a very popular and one of the most widely used open-source bioinformatics software. It is generally used for molecular dynamics simulation of macromolecules. In this article, we will explain its uses and applications in bioinformatics studies. (more…)

We have provided several articles on GROMACS [1] installation on Ubuntu including the easy installation method for GROMACS version 5.x.x. In this article, we will provide shell scripts to install the latest (2021 series) of GROMACS on Ubuntu 18.04 and 20.04. (more…)

MD simulation is a tricky technique if you don’t understand what you are doing through various parameters and algorithms in GROMACS [1]. That may lead to several errors. In this article, we are going to create an index file for the protein groups in GROMACS to solve such errors. (more…)

Generating the topology of small molecules/ligands is an important step in molecular dynamics (MD) Simulation. We explained it in previous articles as part of MD simulation tutorials. In this article, we will explain how can you generate the topology of ligands for MD simulation of complex or small molecules only. (more…)

GROMACS [1] offers a vast range of functions when it comes to molecular dynamics simulation. Today, we are going to explore it for the simulation of small organic molecules. (more…)

In this tutorial, we are performing MD simulation in mixed solvents of methanol and water using GROMACS [1,2]. You can follow our previous articles for MD simulation of a simple protein and a protein-ligand complex. (more…)

We have provided several tutorials on molecular dynamics (MD) simulation (please check further reading section). They include installation of simulation software, simulation of a simple protein, and a complex. In this article, we will analyze the GROMACS [1] output of MD simulation of a complex. (more…)

Molecular dynamics (MD) simulation is one of the most widely used methods in bioinformatics. It needs high computation time and therefore, performed on workstations and servers. It requires software to upload and download files to and from the server. In this article, we have explained how to submit MD simulation jobs on cluster computers using PBS scripts. (more…)

GROMACS [1] is one of the most popular software in bioinformatics for molecular dynamic (MD) studies of macromolecules. We have provided different tutorials regarding MD simulation using GROMACS including its installation on Ubuntu. In this article, we will install GROMACS with GPU acceleration. (more…)

Molecular dynamics (MD) simulation is considered amongst the important methods in bioinformatics. Installation of MD simulation software and execution of their commands is critical. It requires several parameters to be considered before performing simulations. A single mistake may result in impractical outputs. In this article, we will discuss such important things to remember during the MD simulation and installation and execution of its software (GROMACS) [1,2]. (more…)

This is a video tutorial of our existing article “Molecular Dynamics (MD) Simulation using GROMACS“.

Previously, we have provided a tutorial on molecular dynamics (MD) simulation of a protein using GROMACS [1] and its result analysis [2]. In this article, we will perform MD simulation for a protein-ligand complex using GROMACS [3, 4]. (more…)

CHARMM (Chemistry at Harvard Molecular Mechanics) is a molecular simulation program that can be used for simulation of macromolecules, complexes, and many-particle systems [1]. In this article, we will install the nonprofit/academic version of CHARMM on Ubuntu. (more…)

Molecular dynamics (MD) simulation has become an important methodology in research covering systems consisting of millions of atoms. We have provided several articles on MD simulation including the GROMACS [1] installation and performing MD. In this article, we will learn about “QwikMD” a plugin in NAMD [3], and VMD [4]. (more…)

Molecular dynamics (MD) simulation is an important step in studying the dynamics of macromolecules. In one of the previous articles, MD simulation of chain A of insulin (PDB ID: 1ZNI) was performed using GROMACS. The output analysis of that simulation is explained in this article. (more…)