Nuclear compartmentalization further enhances evolutionary tuning of ERG11. Under azole stress, the relocation of ERG11 transcripts and regulatory proteins toward the nuclear periphery establishes transient “microdomains” of transcriptional activation (Finkel et al., 2021). These perinuclear environments, rich in chromatin remodelers and redox-sensitive cofactors, create spatially confined zones where transcriptional variation is amplified. The nuclear envelope, long considered a mere boundary, thus functions as an active participant in evolutionary modulation, structuring biochemical access and mutational opportunity around adaptive loci like ERG11.

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