Recent years have seen remarkable gains in the accuracy of atomistic molecular dynamics (MD) simulations of intrinsically disordered proteins (IDPs) and expansion in the types of calculated properties that can be directly compared with experimental measurements. These advances occurred due to the use of IDP-tested force fields and the porting of MD simulations to GPUs and other computational technologies. All-atom MD simulations are now explaining the sequence-dependent dynamics of IDPs; elucidating the mechanisms of their binding to other proteins, nucleic acids, and membranes; revealing the modes of drug action on them; and characterizing their phase separation. Artificial intelligence (AI) and machine learning (ML) are further expanding the reach of atomistic MD simulations.
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http://dx.doi.org/10.1016/j.sbi.2025.103029 | DOI Listing |
J Chem Theory Comput
March 2025
School of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany.
The estimation of accurate free energies for antibiotic permeation via the bacterial outer-membrane porins has proven to be challenging. Atomistic simulations of the process suffer from sampling issues that are typical of systems with complex and slow dynamics, even with the application of advanced sampling methods. Ultimately, the objective is to obtain accurate potential of mean force (PMF) for a large set of antibiotics and to predict permeation rates.
View Article and Find Full Text PDFJ Mol Model
March 2025
College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an 271018, China.
Context: TEMPO-oxidized cellulose nanofibers (TOCNFs) show significant potential for developing high-performance resistive humidity sensors due to their hydrophilicity and structural adaptability. However, the underlying atomic-scale mechanisms governing their humidity response remain poorly understood. Using molecular dynamics simulations, this study investigates how crystal facets, nanopore widths, and humidity levels influence the surface wettability, water permeability, and swelling of TOCNFs.
View Article and Find Full Text PDFNanomaterials (Basel)
February 2025
Deparment of Chemistry, Stockholm University, Svante Arrhenius väg 16 C, 10691 Stockholm, Sweden.
Hydrated anatase (101) titanium dioxide surfaces with oxygen vacancies have been studied using a combination of classical and ab initio molecular dynamics simulations. The reactivity of surface oxygen vacancies was investigated using ab initio calculations, showing that water molecules quickly adsorb to oxygen vacancy sites upon hydration. The oxygen vacancy then quickly reacts with the adsorbed water, forming a protonated bridging oxygen atom at the vacancy site and at a neighboring oxygen bridge.
View Article and Find Full Text PDFCurr Opin Struct Biol
March 2025
Department of Chemistry and Department of Physics, University of Illinois Chicago, Chicago, IL, 60607, USA; Department of Physics, University of Illinois Chicago, Chicago, IL, 60607, USA. Electronic address:
Recent years have seen remarkable gains in the accuracy of atomistic molecular dynamics (MD) simulations of intrinsically disordered proteins (IDPs) and expansion in the types of calculated properties that can be directly compared with experimental measurements. These advances occurred due to the use of IDP-tested force fields and the porting of MD simulations to GPUs and other computational technologies. All-atom MD simulations are now explaining the sequence-dependent dynamics of IDPs; elucidating the mechanisms of their binding to other proteins, nucleic acids, and membranes; revealing the modes of drug action on them; and characterizing their phase separation.
View Article and Find Full Text PDFThe structural dynamics of proteins play a crucial role in their function, yet most experimental and deep learning methods produce only static models. While molecular dynamics (MD) simulations provide atomistic insight into conformational transitions, they remain computationally prohibitive, particularly for large-scale motions. Here, we introduce DeepPath, a deep-learning-based framework that rapidly generates physically realistic transition pathways between known protein states.
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