生物
莲藕
泛素连接酶
磷酸化
信号转导
受体
细胞生物学
DNA连接酶
共生
生物化学
遗传学
细菌
泛素
基因
DNA
作者
Hao Li,Yajuan Ou,Jidan Zhang,Kui Huang,Ping Wu,Xiaoli Guo,Hui Zhu,Yangrong Cao
标识
DOI:10.1016/j.molp.2024.05.010
摘要
The precise control of receptor levels is crucial for initiating cellular signaling transduction in response to specific ligands; however, such mechanisms regulating nodulation factor (NF) receptor (NFR)-mediated perception of NFs to establish symbiosis remain unclear. In this study, we unveil the pivotal role of the NFR-interacting RING-type E3 ligase 1 (NIRE1) in regulating NFR1/NFR5 homeostasis to optimize rhizobial infection and nodule development in Lotus japonicus. We demonstrated that NIRE1 has a dual function in this regulatory process. It associates with both NFR1 and NFR5, facilitating their degradation through K48-linked polyubiquitination before rhizobial inoculation. However, following rhizobial inoculation, NFR1 phosphorylates NIRE1 at a conserved residue, Tyr-109, inducing a functional switch in NIRE1, which enables NIRE1 to mediate K63-linked polyubiquitination, thereby stabilizing NFR1/NFR5 in infected root cells. The introduction of phospho-dead NIRE1
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