ArticleCell2026
Prion-based protein self-assembly tunes mutagenesis to enable rapid adaptation.
Article in Cell, 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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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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10 authors.
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Abstract
Mutations supply the raw material for evolution, yet because most are neutral or deleterious, elevated mutation rates are typically transient. Nonetheless, modeling predicts that a mechanism for heritable but reversible "mutagenesis switches" would be advantageous in some selective contexts. Here, we report that frequent prion-based switching of DNA repair and recombination proteins alters mutagenesis in Saccharomyces cerevisiae populations from diverse ecological niches, including the laboratory and clinic, providing adaptive benefits in short-term evolution under strong selective pressure. Self-templating protein assembly alters the activities and interactions of multiple DNA-fidelity factors, reshaping adaptive outcomes while maintaining resilience to genotoxic stress. In the WHO priority pathogen Candida albicans, which diverged from S. cerevisiae ∼300 million years ago, a key regulator of prion inheritance accelerates the rapid emergence of fluconazole resistance. These findings suggest that protein self-assembly can generate epigenetic memory that tunes genome diversification over multiple generations, enabling rapid adaptation in challenging environments.
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