Huang_2022_Science_377_eabq3297

Reference

Title : Identification and receptor mechanism of TIR-catalyzed small molecules in plant immunity - Huang_2022_Science_377_eabq3297
Author(s) : Huang S , Jia A , Song W , Hessler G , Meng Y , Sun Y , Xu L , Laessle H , Jirschitzka J , Ma S , Xiao Y , Yu D , Hou J , Liu R , Sun H , Liu X , Han Z , Chang J , Parker JE , Chai J
Ref : Science , 377 :eabq3297 , 2022
Abstract :

Plant nucleotide-binding leucine-rich repeat-containing (NLR) receptors with an N-terminal Toll/interleukin-1 receptor (TIR) domain sense pathogen effectors to enable TIR-encoded NADase activity for immune signaling. TIR-NLR signaling requires helper NLRs N requirement gene 1 (NRG1) and Activated Disease Resistance 1 (ADR1), and Enhanced Disease Susceptibility 1 (EDS1) that forms a heterodimer with each of its paralogs Phytoalexin Deficient 4 (PAD4) and Senescence-Associated Gene101 (SAG101). Here, we show that TIR-containing proteins catalyze production of 2'-(5''-phosphoribosyl)-5'-adenosine mono-/di-phosphate (pRib-AMP/ADP) in vitro and in planta. Biochemical and structural data demonstrate that EDS1-PAD4 is a receptor complex for pRib-AMP/ADP, which allosterically promote EDS1-PAD4 interaction with ADR1-L1 but not NRG1A. Our study identifies TIR-catalyzed pRib-AMP/ADP as a missing link in TIR signaling via EDS1-PAD4 and as likely second messengers for plant immunity.

PubMedSearch : Huang_2022_Science_377_eabq3297
PubMedID: 35857645
Gene_locus related to this paper: arath-eds1 , arath-PAD4

Related information

Substrate pRib-AMP    pRib-ADP
Gene_locus pRib-AMP    pRib-ADP    arath-eds1    arath-PAD4
Structure pRib-AMP    pRib-ADP    arath-eds1    arath-PAD4    7XDD    7XEY    7XJP

Citations formats

Huang S, Jia A, Song W, Hessler G, Meng Y, Sun Y, Xu L, Laessle H, Jirschitzka J, Ma S, Xiao Y, Yu D, Hou J, Liu R, Sun H, Liu X, Han Z, Chang J, Parker JE, Chai J (2022)
Identification and receptor mechanism of TIR-catalyzed small molecules in plant immunity
Science 377 :eabq3297

Huang S, Jia A, Song W, Hessler G, Meng Y, Sun Y, Xu L, Laessle H, Jirschitzka J, Ma S, Xiao Y, Yu D, Hou J, Liu R, Sun H, Liu X, Han Z, Chang J, Parker JE, Chai J (2022)
Science 377 :eabq3297