Fungal microtubule

Fungal microtubules are dynamic cytoskeletal polymers composed primarily of α-tubulin and β-tubulin heterodimers that assemble into hollow tubes. They play essential roles in maintaining cell shape, enabling polarized tip growth in filamentous fungi, organizing the mitotic spindle during nuclear division, facilitating intracellular trafficking of vesicles and organelles, and supporting overall cellular architecture. In fungi specifically, the organization of these structures is coordinated by specialized organelles called spindle pole bodies—functionally analogous to centrosomes—which nucleate new microtubules via γ-tubulin complexes[1][5]. Disruption of fungal microtubules impairs critical processes such as hyphal extension and mitosis; thus they represent validated targets for several classes of antifungal drugs including benzimidazoles like benomyl and griseofulvin[6][7]. The main therapeutic challenge lies in achieving selectivity over mammalian counterparts due to structural conservation among eukaryotic tubulins.

Other names

Microtubules (in fungi)fungal cytoskeletal microtubulefungal tubulin polymerspindle microtubule (fungal)

Drugs targeting fungal microtubules typically act by binding to tubulin subunits, inhibiting their polymerization or destabilizing existing microtubules. This disrupts mitotic spindle formation, nuclear division, intracellular transport, and ultimately inhibits cell proliferation or causes cell death[7].