Download MendeleyStructural basis for size-selective perception of chitin in plants.
Gysel, K., Hansen, S.B., Rubsam, H., Alsarraf, H.M.A.B., Madland, E., Baadegaard, C., Engholm, E., Cheng, J.X.J., Poulsen, E.C., Vinther, M., Jensen, K.J., Thygesen, M.B., Fort, S., Stougaard, J., Andersen, K.R.(2026) Science 394: 298-305
- PubMed: 42879538 Search on PubMed
- DOI: https://doi.org/10.1126/science.adz4600
- Primary Citation Related Structures:
9H6V, 9Q83, 9Q84, 9QRS - PubMed Abstract:
Plants detect microbes through pattern recognition receptors that perceive conserved microbial surface motifs known as microbe-associated molecular patterns (MAMPs). Lysin motif (LysM) receptors recognize and mediate downstream responses to chitinous MAMPs. In this study, we elucidated the mechanism for the specific recognition of long-chain chitin oligomers and identified a hallmark bridge domain characteristic of the CHITIN PERCEPTION (CHIP) receptor class. Structural analysis of receptor-ligand complexes, biochemistry, and in planta functional studies of inhibitory nanobodies revealed the mechanism of size-selective, high-affinity chitin perception in Lotus japonicus and Medicago truncatula . Additionally, we identified the CHITIN ELICITOR RECEPTOR KINASE (CERK) class as low-affinity, yet essential, co-receptors and propose a mechanistic model for a ligand-induced core signaling heterocomplex. Our findings establish the structural and mechanistic basis of differential chitin perception and receptor complex assembly in chitin-elicited plant immune signaling.
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark.
Organizational Affiliation:
