An open CHARMM-compatible parameter set lets researchers simulate a dozen HIV-1 drugs at both atomistic and coarse-grained resolution
- A workflow of quantum-mechanical optimization, experimental benchmarking and small-molecule coarse-graining yields CHARMM-compatible parameters for 12 HIV-1 inhibitors and the cofactor IP6, released with structure and restraint files.
- Simulations of inhibitor-bound complexes checked them against known structural and thermodynamic data, including lenacapavir binding free energies.
- Examples: a capsid-lattice free-energy profile for an integrase strand transfer inhibitor and binding energetics of an allosteric integrase inhibitor, with coarse-graining that keeps key electrostatics.
💡 Points Based on the abstract
Ligand parameters are usually the weak link in capsid simulations, so twelve inhibitors plus IP6 in one CHARMM-compatible set is a practical gain. What remains open is whether the lenacapavir free-energy estimates hold for compounds left out of parametrization, since agreement with known data alone is a fit. Test how well the coarse-grained mapping transfers to your own analogs.