Parasite tubulin (microtubule polymerization)

Parasite microtubule polymerization involves the assembly of microtubules from tubulin subunits, which is essential for parasite cell division, structural integrity, motility, and host cell invasion[2][5][7]. Apicomplexan and kinetoplastid parasites exhibit unique structural architectures that differentiate their microtubules from those of mammals, such as hyper-stable subpellicular arrays and specialized invasion structures (like the conoid in Toxoplasma and Plasmodium)[5][7]. Several drug classes, including benzimidazoles, dinitroanilines, and newly designed agents like parabulin, can selectively target parasite microtubule polymerization, inhibiting parasite replication and infection while sparing host cells[6][4][8]. Selectivity arises from amino acid differences in the drug-binding sites of parasite tubulin, which enable structure-guided drug design[2][4][8]. This therapeutic avenue is threatened by the rapid emergence of drug-resistant parasite strains, making combination therapies and structural-guided drug development paramount[4][6].

Other names

Parasite tubulinparasite microtubuleprotozoan microtubuleapicomplexan microtubulekinetoplastid microtubule

Inhibition of tubulin polymerization, disrupting microtubule assembly and function. Selective binding to parasite tubulin to block microtubule resealing or cause destabilization. Inhibition of cell division by interfering with spindle formation during mitosis.