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Researchers Deliver 4D Whole-Cell Simulation That Replicates Minimal Bacterium’s Full Life Cycle

Built on NSF-backed supercomputing, the model reproduces a 105-minute JCVI-syn3A cycle with near-experimental timing, offering a tool for hypothesis-driven cell biology.

Overview

  • The University of Illinois–led team simulated nearly every modeled chemical reaction and molecular movement across one complete cell cycle of the minimal bacterium JCVI-syn3A.
  • A full 105-minute cycle ran in six days on the Delta supercomputer after dedicating one GPU to chromosome replication and another to remaining cellular dynamics.
  • Repeated runs matched real-cell division timing on average within about two minutes, indicating strong agreement with experimental measurements.
  • The spatial, time-resolved model recapitulated emergent behaviors such as swelling, elongation and symmetric division, supported by datasets from collaborators at Harvard Medical School and Boston Children's Hospital.
  • Deliberate simplifications constrained scope yet enabled tractability, including treating unknown-gene products as inert spheres and allowing one ribosome per mRNA, positioning the platform as a predictive research tool rather than an atomistic replica.