ReviewPlant physiology2024
Destined for destruction: The role of methionine aminopeptidases and plant cysteine oxidases in N-degron formation.
Review in Plant physiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Here come the floods: chemical priming of plant cysteine oxidases improves flood tolerance.Plant physiology · 2026Article
- Protist oxygen-sensing and the role of prolyl hydroxylase-regulation of E3(SCF) ubiquitin ligases.Biochimica et biophysica acta. General subjects · 2026Review
- Reconstitution of protein arginylation pathways in bacteria for robust identification and quantification.Communications biology · 2026Article
- A multiplant transcriptomic atlas reveals conserved and lineage-specific defense architectures in response toProceedings of the National Academy of Sciences of the United States of America · 2026Article
- Novel insights into retrogene evolution and cold adaptation in the alpine plant Crucihimalaya himalaica (Brassicaceae).BMC biology · 2026Article
- Single-Cell Transcriptomics Reveals FLS2-Dependent Hypoxia Signaling and ERF13-Mediated Transcription During flg22-Triggered Immunity.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Molecular signatures of adaptive introgression and selection in contact zones of closely related pine species (Pinus genus).BMC plant biology · 2025Article
- Acylamino acid-releasing enzyme, a bifunctional protease with a potential role in aging.Journal of experimental botany · 2025Review
- Hypoxia as challenge and opportunity: From cells to crops, to synthetic biology.Plant physiology · 2024Article
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Authors and funding
9 authors.
Funding
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Abstract
The cysteine/arginine (Cys/Arg) branch of the N-degron pathway controls the stability of certain proteins with methionine (Met)-Cys N-termini, initiated by Met cleavage and Cys oxidation. In seeding plants, target proteins include the Group VII Ethylene Response Factors, which initiate adaptive responses to low oxygen (hypoxic) stress, as well as Vernalization 2 (VRN2) and Little Zipper 2 (ZPR2), which are involved in responses to endogenous developmental hypoxia. It is essential that these target proteins are only degraded by the N-degron pathway under the appropriate physiological conditions. Modification of their N-termini is under enzymatic control by Met Aminopeptidases (MetAPs) and Plant Cysteine Oxidases (PCOs); therefore, the substrate-binding requirements and catalytic effectiveness of these enzymes are important for defining which Met-Cys-initiating proteins are degraded. Physiological conditions can also impact the activity of these enzymes, and the well-characterized oxygen sensitivity of the PCOs ensures target proteins are stabilized in hypoxia. In this review we compile the functional and structural properties of MetAPs and PCOs, including their interactions with substrates. We also consider the evolution of MetAPs and PCOs through the plant kingdom to highlight their important role in controlling the initial steps of this branch of the N-degron pathway.
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