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Showing posts from August, 2026

𝗩𝗶𝗿𝘁𝘂𝗮𝗹 𝗦𝗰𝗿𝗲𝗲𝗻𝗶𝗻𝗴 𝗶𝗻 𝗗𝗿𝘂𝗴 𝗗𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆: 𝗙𝗶𝗻𝗱𝗶𝗻𝗴 𝗣𝗿𝗼𝗺𝗶𝘀𝗶𝗻𝗴 𝗖𝗼𝗺𝗽𝗼𝘂𝗻𝗱𝘀 𝗖𝗼𝗺𝗽𝘂𝘁𝗮𝘁𝗶𝗼𝗻𝗮𝗹𝗹𝘆

  💊 𝗩𝗶𝗿𝘁𝘂𝗮𝗹 𝗦𝗰𝗿𝗲𝗲𝗻𝗶𝗻𝗴 𝗶𝗻 𝗗𝗿𝘂𝗴 𝗗𝗶𝘀𝗰𝗼𝘃𝗲𝗿𝘆: 𝗙𝗶𝗻𝗱𝗶𝗻𝗴 𝗣𝗿𝗼𝗺𝗶𝘀𝗶𝗻𝗴 𝗖𝗼𝗺𝗽𝗼𝘂𝗻𝗱𝘀 𝗖𝗼𝗺𝗽𝘂𝘁𝗮𝘁𝗶𝗼𝗻𝗮𝗹𝗹𝘆 Discovering a new drug candidate can involve screening thousands or even millions of compounds. Testing every molecule experimentally is expensive and time-consuming. Virtual Screening (VS) uses computational methods to prioritize promising compounds before laboratory testing, helping researchers make the drug discovery process more efficient. 🔍 𝗪𝗵𝗮𝘁 𝗶𝘀 𝗩𝗶𝗿𝘁𝘂𝗮𝗹 𝗦𝗰𝗿𝗲𝗲𝗻𝗶𝗻𝗴? Virtual Screening is a computational approach used to evaluate large libraries of compounds and identify molecules that are likely to interact with a biological target. It is commonly used after target identification and can help prioritize compounds for molecular docking, experimental testing, and lead optimization. 📊 𝗠𝗮𝗷𝗼𝗿 𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵𝗲𝘀 🎯 Structure-Based Virtual Screening (SBVS) – Uses the 3D structure of a target protein...

You ran your MD simulation. What comes next?

  🧬 A trajectory can contain thousands of frames, but the real challenge is turning all that molecular motion into something meaningful. I’m still learning and exploring how Python can make MD analysis more efficient and reproducible. RMSD → Stability RMSF → Flexibility H-bonds → Interactions PCA → Collective motions FEL → Conformational states The goal isn’t just to generate plots, but to move from raw trajectory → quantitative analysis → biological insight. Sharing a small part of my learning journey - hopefully useful for others learning MD too. MDAnalysis, MDTraj or ProDy — which one do you use most for MD analysis?

Theories Behind Computational Chemistry|DFT & TD-DFT

  Computational chemistry allows us to study molecules using mathematics and quantum mechanics without always needing to perform an experiment first. 🔹 Density Functional Theory (DFT) DFT is widely used to study the electronic structure of molecules. Instead of directly solving the complex many-electron wavefunction, DFT works with electron density to predict properties such as: • Molecular geometry • Bond lengths and angles • HOMO–LUMO energies • Electronic structure • Ground-state properties 🔹Time-Dependent Density Functional Theory (TD-DFT) When we want to understand how a molecule behaves after absorbing light, TD-DFT becomes useful. It can help predict: • Electronic excitations • UV–Visible absorption spectra • Excited-state energies • Oscillator strengths • Photophysical properties In simple terms: DFT → How is the molecule in its ground state? TD-DFT → How does the molecule respond when it absorbs energy? These theories form an important foundation for studying molecular ...