How does the recent breakthrough in chitin synthase structure affect future agrochemical demand for chitin-related products?
A Chinese research team published the first Nature paper from China's pesticide field, deciphering the full biosynthesis mechanism of chitin using cryo-EM and X-ray diffraction on Phytophthora sojae chitin synthase PsChs1. This resolves a 50-year bottleneck in designing pesticides that inhibit chitin synthesis in insects and pathogenic fungi. Since chitin is absent in plants and mammals, such pesticides offer high target specificity and human safety. The structural elucidation of five enzyme states — free, substrate-bound, oligomer-bound, product-bound, and inhibitor-bound — provides the atomic-level basis for rational design of next-generation fungicides and insecticides. This could reshape the agrochemical market by enabling greener, more effective products, potentially reducing reliance on broad-spectrum chemicals and creating new demand for chitin synthase inhibitors as active ingredients.
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