ArticleNature communications2025
Identification and structure-guided development of triazole urea-based selective antagonists of Arabidopsis karrikin signaling.
Article in Nature communications, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Structure-informed engineering of plant-microbe interactions.The Plant journal : for cell and molecular biology · 2026Review
- Molecular insights into volatile organic compound sensing and signaling in plants.The Plant journal : for cell and molecular biology · 2026Review
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Authors and funding
11 authors.
Funding
Abstract
The smoke-derived butenolides, karrikins (KARs), regulate many aspects of plant growth and development. However, KARs and a plant hormone, strigolactones (SLs), have high resemblance in signal perception and transduction, making it hard to delineate KARs response due to the shortage of chemical-genetic tools. Here, we identify a triazole urea KK181N1 as an inhibitor of the KARs receptor KAI2. KK181N1 selectively depress the KAR-induced phenotypes in Arabidopsis. We further elucidate the antagonistic, KAI2 binding mechanism of KK181N1, showing that KK181N1 binds to the catalytic pockets of KAI2 in a non-covalent binding manner. Our experiments also demonstrate the binding affinity of triazole urea compounds are regulated by the structured water molecule networks. By fine-tuning this network, we successfully develop a more potent derivative of KK181N1. We anticipate that these chemicals will be applicable to the elucidation of KARs biology, especially for discriminating the molecular and physiological aspects of KARs and SL signaling.
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