1398-61-4 Chitin Journal Article 9012-76-4 Arabidopsis Proteins CHITIN ELICITOR RECEPTOR KINASE1 (AtCERK1) Chitosan E3 ligase EC 2.3.2.27 EC 2.7.- LYK5 protein, Arabidopsis LYSIN MOTIF RECEPTOR KINASE5 (AtLYK5) Lipopolysaccharides Myc factors, Nod factors, Oligosaccharides PLANT U-BOX13 (AtPUB13) PUB13 protein, Arabidopsis Pathogen-Associated Molecular Pattern Molecules Peptidoglycan Protein Kinases Reactive Oxygen Species Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Review Ubiquitin-Protein Ligases arbuscular mycorrhizal (AM) symbiosis, chitin chitooctaose innate immunity,