Tag
Molecular Dynamics
Molecular Modeling How to Do Ensemble Docking with MD Snapshots (Receptor Flexibility Beyond Flexible Side Chains) Learn ensemble docking step by step: run MD on the apo protein, cluster the trajectory, dock into every snapshot, then combine the… Dr. Abdul Rajjak Shaikh 12 min read Molecular Modeling How to Handle Metal Ions in Molecular Docking and MD (Zinc, Magnesium and Iron, Step by Step) Stop deleting the zinc. Learn when to keep a metal ion, how to dock into a metalloprotein with AutoDock4Zn, and how to… Dr. Abdul Rajjak Shaikh 15 min read Molecular Modeling How to Set Protonation States and Add Hydrogens to a Protein Before Docking or MD (PDB2PQR, PROPKA and H++) Crystal structures ship without hydrogens. Learn to predict pKa values with PROPKA, protonate with PDB2PQR or H++, and check the result before… Dr. Abdul Rajjak Shaikh 14 min read Molecular Modeling How to Run GROMACS on an HPC Cluster with SLURM: Job Scripts, Modules and Restarts Move your GROMACS run from a laptop to a shared cluster. Load the right module, write a correct sbatch script, and restart… Dr. Abdul Rajjak Shaikh 12 min read Molecular Modeling How to Run an MD Simulation of a Vaccine Construct-TLR Complex in GROMACS: Setup, Length and What to Report Take a docked vaccine construct into GROMACS: which pose to carry forward, force field and box setup, how many replicas to run,… Ragini Mishra 17 min read 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 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 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