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- W4319880763 abstract "We are interested in how physics at the colloidal scale instantiate life in biological cells. While principles from physics have driven recent paradigm shifts in how collective biomolecular behaviors orchestrate life, many mechanistic aspects of e.g. transcription, translation, and condensation remain mysterious because understanding and controlling them requires unifying two disparate physical regimes: the atomistic (structural biology) and the microscopic (systems biology). Colloidal-scale modeling bridges this divide and links molecular-scale behaviors to whole-cell function. Today I will discuss our computational model of a bacterial cell, where we represent biomolecules and their interactions physically and chemically, individually and explicitly. With it, we tackle a fundamental open question in biology, from a physico-chemical perspective: why protein synthesis speeds up during faster E. coli growth. We report a new mechanism, “stoichiometric crowding,” that leads to a previously undiscovered increase in ribosome productivity that in turn drives the speedup in protein synthesis. More generally, our computational study of protein synthesis in E. coli from the tandem perspective of cell biology and meso-scale physics presents a unique opportunity to broadly explore how the physical state of the cell impacts biological function." @default.
- W4319880763 created "2023-02-11" @default.
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- W4319880763 date "2023-02-01" @default.
- W4319880763 modified "2023-09-25" @default.
- W4319880763 title "Study of colloidal physics that instantiate life in biological cells" @default.
- W4319880763 doi "https://doi.org/10.1016/j.bpj.2022.11.2610" @default.
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- W4319880763 hasPublicationYear "2023" @default.
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