ArticleJournal of computational chemistry2026
Time-Dependent Voronoi Analysis of Amino Acid Side-Chain Packing in Simulations.
Article in Journal of computational chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Protein conformational motion depends on geometric and chemical constraints in side-chain packing. Thermal forces and incomplete packing produce "breathing" motions that allow internal rearrangement. Packing dynamics therefore inform protein allostery, conformational change, and folding. While Voronoi tessellation is a promising approach to this end, its application to proteins has been mainly focused on static structures. Here, the Voro++ library is adopted to investigate time-dependent amino acid packing in molecular dynamics trajectories of a titin immunoglobulin domain at 300 and 400 K. Tracking per-residue Voronoi volume changes and reorganization of neighbor faces in the Voronoi lattice reveals residue-level volume shifts and the corresponding timing of localized protein swelling. Side-chain motion into and out of the protein core can also be monitored by mapping neighbor switching. This framework is applicable to detecting delicate changes preceding protein conformational transition or unfolding, and analyzing protein-protein interface reorganization or surface hydration.
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