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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.

A docking search box rendered as a golden wireframe around a ligand, with a teal DNA helix behind
Molecular Modeling How to Fix Missing Residues and Loops in a PDB Structure Before Docking or MD (ChimeraX, SWISS-MODEL and MODELLER) Find the gaps your crystal structure never resolved, decide which ones matter, and rebuild them in ChimeraX, SWISS-MODEL or MODELLER before docking… Dr. Abdul Rajjak Shaikh 15 min read Molecular Modeling How to Analyze Protein-Ligand Interactions Over an MD Trajectory (ProLIF and MDAnalysis, Step by Step) Compute which binding-site residues held your ligand and for what percentage of the run, using ProLIF and MDAnalysis on a PBC-corrected GROMACS… Dr. Abdul Rajjak Shaikh 11 min read Updated Bioinformatics How to Dock a Multi-Epitope Vaccine Construct with TLR4: ClusPro, HDOCK and HADDOCK Compared Dock a screened vaccine construct against TLR4 the way a reviewer reads it: pick the PDB entry, prep the files, compare three… Ragini Mishra 16 min read Molecular Modeling How to Do Flexible Docking in AutoDock Vina (Flexible Side Chains, Step by Step) Learn how to let binding-site side chains move in AutoDock Vina: split the receptor with Meeko, run vina --flex, and judge whether… Dr. Abdul Rajjak Shaikh 14 min read Updated Molecular Modeling UCSF ChimeraX Tutorial for Beginners: Load, Inspect and Clean a Protein Structure Learn UCSF ChimeraX in one sitting: fetch a PDB entry, master the 12 core commands, then clean the structure for docking or… Dr. Abdul Rajjak Shaikh 13 min read Updated Molecular Modeling How to Calculate a Binding Free Energy with Umbrella Sampling in GROMACS (Pulling, Windows and gmx wham) Learn how to run umbrella sampling in GROMACS: set up the pull code, pick windows that overlap, run gmx wham and read… Dr. Abdul Rajjak Shaikh 18 min read Updated Molecular Modeling How to Analyze a GROMACS Trajectory in Python with MDAnalysis: A Step-by-Step Guide for Beginners Load a GROMACS .tpr and .xtc into MDAnalysis, reproduce RMSD and RMSF in Python, and write the per-frame analysis no gmx tool… Dr. Abdul Rajjak Shaikh 20 min read Updated Career Guide Life Science PhD, Fellowship and Scholarship Deadlines: 15 Close by 24 August 2026 153 life science funding calls, every one verified on the funding organisation's own page. Fifteen close by 24 August 2026, and six… Dr. Abdul Rajjak Shaikh 148 min read Updated Molecular Modeling How to Analyze Protein Secondary Structure from a GROMACS Trajectory (gmx dssp): A Step-by-Step Guide Run gmx dssp on your GROMACS trajectory, read the .dat and .xvg outputs, and fix the "do_dssp not found" error that breaks… Dr. Abdul Rajjak Shaikh 13 min read Updated

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