Fungi - Candida albicans - Research News, Data, Publications & Aproaches - ERG11 Mutations - Telomeres - Sub-Telomeric Structures - Nuclear Biology & Nuclear Chemistry Aproaches - Chromatin Accessibility, Nuclear Chemistry, and Mutation Propensity of the ERG11 Locus in Candida albicans - Non-Elaborate Posts - Post 2

 Subtelomeric chromatin in C. albicans exhibits oscillatory states of condensation that mirror changes in nuclear redox potential and histone modification patterns (Berman, 2019). Telomere-associated silencing, mediated by Sir2p and Rap1p, establishes a baseline heterochromatic state characterized by histone hypoacetylation and H3K9 methylation. Yet, under environmental perturbations such as azole exposure or oxidative imbalance, these silencing complexes dissociate, allowing chromatin remodeling complexes like SWI/SNF and INO80 to reposition nucleosomes near ERG11. This transient chromatin relaxation enhances both transcription and mutational potential, suggesting that the genome’s outer edges are biochemically predisposed toward adaptive fluidity.

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