Fungi - Candida albicans - Research News, Data, Publications & Aproaches - ERG11 Mutations - Telomeres - Nuclear Biology & Nuclear Chemistry Aproaches - Heme-Dependant Nuclear Chemistry - Non-Elaborate Posts - Post 8

 

 At the molecular interface of heme and nucleic acids, subtle electronic interactions emerge. Heme’s planar porphyrin ring, rich in π-electrons, can engage in stacking interactions with DNA bases in vitro, and such transient associations may influence local DNA topology. In nuclear environments enriched in heme — as during oxidative stress — these interactions could transiently alter DNA helical parameters, influencing promoter accessibility near ERG11.

Additionally, iron-mediated Fenton-like reactions in proximity to chromatin may induce controlled oxidative modifications on guanine residues, serving as redox epigenetic marks. These chemical resonances between the heme cofactor and genomic DNA hint at a deeper, underexplored dimension of nuclear bioinorganic chemistry.

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