QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations
Understanding the interaction of ligands with biomolecules is an integral component of drug discovery and development. Challenges for computing thermodynamic and kinetic quantities for pharmaceutically relevant receptor-ligand complexes include the size and flexibility of the ligands, large-scale co...
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cracsoc:10.26434/chemrxiv-2023-s4n3r 2024-04-07T07:55:15+00:00 QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations Ojha, Anupam Anand Votapka, Lane Amaro, Rommie 2023 http://dx.doi.org/10.26434/chemrxiv-2023-s4n3r https://chemrxiv.org/engage/api-gateway/chemrxiv/assets/orp/resource/item/64d2d5bd69bfb8925a9adabf/original/q-mrebind-incorporating-quantum-mechanical-force-field-reparameterization-at-the-ligand-binding-site-for-improved-drug-target-kinetics-through-milestoning-simulations.pdf unknown American Chemical Society (ACS) https://creativecommons.org/licenses/by/4.0/ posted-content 2023 cracsoc https://doi.org/10.26434/chemrxiv-2023-s4n3r 2024-03-08T00:17:37Z Understanding the interaction of ligands with biomolecules is an integral component of drug discovery and development. Challenges for computing thermodynamic and kinetic quantities for pharmaceutically relevant receptor-ligand complexes include the size and flexibility of the ligands, large-scale conformational rearrangements of the receptor, accurate force field parameters, simulation efficiency, and sufficient sampling associated with rare events. Our recently developed multiscale milestoning simulation approach, SEEKR2 (Simulation Enabled Estimation of Kinetic Rates v.2), has demonstrated success in predicting binding (kon) and unbinding (koff) kinetics by employing molecular dynamics (MD) simulations in regions closer to the binding site and Brownian dynamics (BD) simulations far from the binding site. The MD region is further subdivided into smaller Voronoi tessellations to improve the simulation efficiency and parallelization. To date, all MD simulations are run using general molecular mechanics (MM) force fields. The accuracy of calculations can be further improved by incorporating quantum mechanical (QM) methods into generating system-specific force fields through reparameterizing ligand charges in the bound state. The force field reparametrization process modifies the potential energy landscape of the bimolecular complex, enabling a more accurate representation of the intermolecular interactions and polarization effects at the bound state. We present QMrebind (Quantum Mechanical force field reparameterization at the receptor-ligand binding site), an ORCA-based software that facilitates reparameterizing the potential energy function within the phase space representing the bound state in a receptor-ligand complex. With existing data from our SEEKR2 estimates and experimentally determined kinetic rates, we compare and interpret the receptor-ligand unbinding kinetics obtained using the newly reparameterized force fields for model host-guest systems and HSP90-inhibitor complexes. This method provides an ... Other/Unknown Material Orca ACS Publications Kon ENVELOPE(161.092,161.092,55.397,55.397) |
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Understanding the interaction of ligands with biomolecules is an integral component of drug discovery and development. Challenges for computing thermodynamic and kinetic quantities for pharmaceutically relevant receptor-ligand complexes include the size and flexibility of the ligands, large-scale conformational rearrangements of the receptor, accurate force field parameters, simulation efficiency, and sufficient sampling associated with rare events. Our recently developed multiscale milestoning simulation approach, SEEKR2 (Simulation Enabled Estimation of Kinetic Rates v.2), has demonstrated success in predicting binding (kon) and unbinding (koff) kinetics by employing molecular dynamics (MD) simulations in regions closer to the binding site and Brownian dynamics (BD) simulations far from the binding site. The MD region is further subdivided into smaller Voronoi tessellations to improve the simulation efficiency and parallelization. To date, all MD simulations are run using general molecular mechanics (MM) force fields. The accuracy of calculations can be further improved by incorporating quantum mechanical (QM) methods into generating system-specific force fields through reparameterizing ligand charges in the bound state. The force field reparametrization process modifies the potential energy landscape of the bimolecular complex, enabling a more accurate representation of the intermolecular interactions and polarization effects at the bound state. We present QMrebind (Quantum Mechanical force field reparameterization at the receptor-ligand binding site), an ORCA-based software that facilitates reparameterizing the potential energy function within the phase space representing the bound state in a receptor-ligand complex. With existing data from our SEEKR2 estimates and experimentally determined kinetic rates, we compare and interpret the receptor-ligand unbinding kinetics obtained using the newly reparameterized force fields for model host-guest systems and HSP90-inhibitor complexes. This method provides an ... |
format |
Other/Unknown Material |
author |
Ojha, Anupam Anand Votapka, Lane Amaro, Rommie |
spellingShingle |
Ojha, Anupam Anand Votapka, Lane Amaro, Rommie QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations |
author_facet |
Ojha, Anupam Anand Votapka, Lane Amaro, Rommie |
author_sort |
Ojha, Anupam Anand |
title |
QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations |
title_short |
QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations |
title_full |
QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations |
title_fullStr |
QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations |
title_full_unstemmed |
QMrebind: Incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations |
title_sort |
qmrebind: incorporating quantum mechanical force field reparameterization at the ligand binding site for improved drug-target kinetics through milestoning simulations |
publisher |
American Chemical Society (ACS) |
publishDate |
2023 |
url |
http://dx.doi.org/10.26434/chemrxiv-2023-s4n3r https://chemrxiv.org/engage/api-gateway/chemrxiv/assets/orp/resource/item/64d2d5bd69bfb8925a9adabf/original/q-mrebind-incorporating-quantum-mechanical-force-field-reparameterization-at-the-ligand-binding-site-for-improved-drug-target-kinetics-through-milestoning-simulations.pdf |
long_lat |
ENVELOPE(161.092,161.092,55.397,55.397) |
geographic |
Kon |
geographic_facet |
Kon |
genre |
Orca |
genre_facet |
Orca |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.26434/chemrxiv-2023-s4n3r |
_version_ |
1795672293120147456 |