Visual molecular dynamics (VMD) has served as an essential platform for biomolecular visualization and analysis in structural biophysics for over three decades, and here, we present VMD 2.0, a transformative update designed to address the evolving demands of modern biophysical research. This release introduces a fully redesigned interface that streamlines complex visualization workflows and molecular dynamics (MD) simulation setup, while incorporating advanced secondary structure algorithms capable of tracking conformational dynamics across thousands of trajectory frames in systems exceeding millions of atoms. Key developments include support for symbol nomenclature for glycans (SNFG) to meet the growing importance of glycobiology, optimized molecular surface algorithms that deliver unprecedented speed and precision for large macromolecular assemblies, and expanded QwikMD compatibility with CHARMM and AMBER force fields to provide enhanced flexibility for simulation protocols. Through integration with NAMD 3.0, VMD 2.0 supports GPU-accelerated all-atom simulations reaching microsecond-per-day performance. It also leverages GPU-enhanced rendering with real-time ray tracing to visualize complex biological processes such as membrane dynamics and protein-nucleic acid interactions. These capabilities are demonstrated through case studies of protein conformational transitions, membrane protein dynamics, and large-scale assemblies, highlighting how VMD 2.0 advances the visualization of dynamic biomolecular structures and deepens our understanding of biological systems at the molecular level.
Gomes et al. (Sun,) studied this question.