Fungi - Candida albicans - Research News, Data, Publications & Aproaches - ERG11 Mutations - Telomeres - Sub-Telomeric Structures - Chromatin Landscape - Nuclear Biology & Nuclear Chemistry Aproaches - Molecular Resilience and Structural Adaptation of ERG11 - Non-Elaborate Posts - Post 3

 

 The most clinically significant ERG11 mutations converge on residues lining the substrate access channel and azole-binding pocket. Y132F removes a polar hydroxyl group, altering π-stacking interactions with fluconazole’s aromatic rings. K143R introduces a larger, more flexible side chain that reshapes electrostatic landscapes near the catalytic cavity. These modifications subtly shift van der Waals contacts and hydrogen-bonding geometries, reducing drug affinity without abolishing lanosterol binding. The beauty of these changes lies in their chemical precision: they exploit the differential sensitivities of drug versus substrate, tolerating minimal losses in sterol production while drastically impairing azole inhibition. Such precision reflects the intimate coupling of protein microchemistry and evolutionary selection.