Guides and tutorials
Computational life sciences, explained step by step.
Real commands, real parameters, and the errors that actually catch people out. Written by researchers who use these tools.
Molecular Modeling How to Perform Energy Minimization in GROMACS: A Step-by-Step Tutorial Run energy minimization in GROMACS with the exact em.mdp settings, grompp and mdrun commands, and convergence checks. Learn to read Fmax and… Dr. Abdul Rajjak Shaikh 10 min read Updated Career Guide Fully Funded Life Science PhD, Fellowship and Scholarship Deadlines: August 2026 Onwards 33 life science PhD, fellowship and scholarship deadlines, every one verified on the funder's official page. Check which close first and start… Dr. Abdul Rajjak Shaikh 37 min read Updated Molecular Modeling How to Solvate a Protein and Add Ions in GROMACS (gmx solvate and gmx genion), Step by Step Solvate a protein and add neutralizing ions in GROMACS with the exact gmx solvate, grompp and gmx genion commands. Fix the SOL… Dr. Abdul Rajjak Shaikh 10 min read Updated Molecular Modeling GROMACS NVT and NPT Equilibration: A Step-by-Step Guide for Beginners Run NVT then NPT equilibration in GROMACS with the exact commands, .mdp settings, and convergence checks. Learn why both phases matter and… Dr. Abdul Rajjak Shaikh 10 min read Updated Molecular Modeling How to Restart or Extend a GROMACS MD Simulation After a Crash or Timeout Restart a crashed GROMACS run from its checkpoint and extend a short one with gmx convert-tpr. Learn the exact commands and fix… Dr. Abdul Rajjak Shaikh 10 min read Updated Bioinformatics How to Predict B-Cell Epitopes with BepiPred and ABCpred: A Step-by-Step Guide Run BepiPred and ABCpred on the same antigen, read per-residue scores against the threshold, and keep only consensus peptides. Start with this… Ragini Mishra 15 min read Molecular Modeling How to Align and Superimpose Two Protein Structures in PyMOL (align, super and cealign): A Step-by-Step Guide Learn to superimpose two proteins in PyMOL with align, super and cealign, read the RMSD, pick the right command, and fix zero-atom… Dr. Abdul Rajjak Shaikh 10 min read Updated Molecular Modeling How to Plot GROMACS Results in Python from .xvg Files (RMSD, RMSF and Energy) Parse GROMACS .xvg files in Python and plot RMSD, RMSF and energy with a reusable read_xvg function. Start making publication-ready figures today. Dr. Abdul Rajjak Shaikh 11 min read Updated Molecular Modeling How to Build a Free Energy Landscape from a GROMACS MD Trajectory Turn a GROMACS trajectory into a 2D free energy landscape with gmx sham and PCA. Start mapping your protein's conformational basins in… Dr. Abdul Rajjak Shaikh 11 min read Updated Molecular Modeling How to Convert Molecular File Formats with Open Babel (PDB to PDBQT, MOL2 and SDF): A Beginner’s Guide Learn to convert PDB to PDBQT, MOL2, SDF and SMILES with Open Babel and get your docking files ready today. Dr. Abdul Rajjak Shaikh 9 min read Updated
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