Proteomics

Dataset Information

0

Catalytically inactive subgroup VIII receptor-like cytoplasmic kinases regulate the immune-triggered oxidative burst in Arabidopsis thaliana


ABSTRACT: Protein kinases are key components of multiple cell signaling pathways. Several protein kinases of the receptor-like cytoplasmic kinase (RLCK) family have demonstrated roles in immune and developmental signaling across various plant species, making them a family of interest in the study of phosphorylation-based signal relay. Here, we present our investigation of a subfamily of RLCKs in Arabidopsis thaliana. Specifically, we focus on subgroup VIII RLCKs: MAZZA and its paralog CARK6, as well as CARK7 and its paralog CARK9. We found that both MAZ and CARK7 associate with the calcium-dependent protein kinase CPK28 in planta, and furthermore that CPK28 phosphorylates both MAZ and CARK7 on multiple residues in areas that are known to be critical for protein kinase activation. Genetic analysis suggests redundant roles for MAZ and CARK6 as negative regulators of the immune-triggered oxidative burst. We find evidence that supports homo- and hetero-dimerization between CARK7 and MAZ, which may be a general feature of this protein family. Multiple biochemical experiments suggest that neither MAZ nor CARK7 demonstrate catalytic protein kinase activity in vitro. Interestingly, we find that a mutant variant of MAZ incapable of protein kinase activity is able to complement maz-1 mutants, suggesting noncatalytic roles of MAZ in planta. Overall, our study identifies subgroup VIII RLCKs as new players in Arabidopsis immune signaling and highlights the importance of noncatalytic functions of protein kinases.

INSTRUMENT(S): Orbitrap Fusion

ORGANISM(S): Arabidopsis Thaliana (mouse-ear Cress)

TISSUE(S): Rosette

SUBMITTER: Richard Uhrig  

LAB HEAD: Glen Uhrig

PROVIDER: PXD052679 | Pride | 2025-05-07

REPOSITORIES: Pride

Dataset's files

Source:
Action DRS
GL_GU10.raw Raw
L_GU1.raw Raw
L_GU11.raw Raw
L_GU12.raw Raw
L_GU2.raw Raw
Items per page:
1 - 5 of 14
altmetric image

Publications

Catalytically inactive subgroup VIII receptor-like cytoplasmic kinases regulate the immune-triggered oxidative burst in Arabidopsis thaliana.

Gonçalves Dias Márcia M   Dharmasena Thakshila T   Gonzalez-Ferrer Carmen C   Maika Jan Eric JE   Miguel Virginia Natali VN   Dou Ruoqi R   Rodriguez Gallo Maria Camila MC   Bredow Melissa M   Siegel Kristen Rose KR   Uhrig R Glen RG   Simon Rüdiger R   Monaghan Jacqueline J  

Journal of experimental botany 20250401 6


Protein kinases are key components of multiple cell signaling pathways. Several receptor-like cytoplasmic kinases (RLCKs) have demonstrated roles in immune and developmental signaling across various plant species, making them of interest in the study of phosphorylation-based signal relay. Here, we present our investigation of a subgroup of RLCKs in Arabidopsis thaliana. Specifically, we focus on subgroup VIII RLCKs: MAZ and its paralog CARK6, as well as CARK7 and its paralog CARK9. We found that  ...[more]

Similar Datasets

2023-05-30 | PXD036069 | Pride
2024-05-23 | PXD037885 | Pride
2025-05-07 | PXD054878 | Pride
2011-10-24 | E-GEOD-33149 | biostudies-arrayexpress
2011-10-24 | E-GEOD-33150 | biostudies-arrayexpress
2021-12-24 | PXD029866 | Pride
2023-05-18 | PXD033825 | Pride
2024-09-30 | PXD052803 | Pride
2019-11-12 | PXD006195 | Pride
2014-11-11 | GSE63152 | GEO