Molecular dynamics (MD) simulations
reveal molecular motions at
atomic resolution. Recent advances in high-performance computing now
enable microsecond-long simulations capable of sampling a wide range
of biologically relevant events. But the disk space required to store
an MD trajectory increases with simulation length and system size,
complicating collaborative sharing and visualization. To overcome
these limitations, we created PCAViz, an open-source toolkit for sharing
and visualizing MD trajectories via the web browser. PCAViz includes
two components: the PCAViz Compressor, which compresses and saves
simulation data; and the PCAViz Interpreter, which decompresses the
data in users’ browsers and feeds it to any of several browser-based
molecular-visualization libraries (e.g., 3Dmol.js, NGL Viewer, etc.).
An easy-to-install WordPress plugin enables “plug-and-play”
trajectory visualization. PCAViz will appeal to a broad audience of
researchers and educators. The source code is available at
, and the WordPress plugin is available via the official WordPress
Plugin Directory.