ArticleThe Plant cell2005
Plasmodesmal-associated protein kinase in tobacco and Arabidopsis recognizes a subset of non-cell-autonomous proteins.
Article in The Plant cell, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers, 1 of them a synthesis that pooled it.
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Who cites it
77 citing papers in PubMed, 1 synthesis or guideline pooled it, 163 citations in OpenAlex.
- A comparative meta-proteomic pipeline for the identification of plasmodesmata proteins and regulatory conditions in diverse plant species.BMC biology · 2022Pooled it
- CabioRxiv : the preprint server for biology · 2026Article
- Microscopic probing into plasmodesmata (PD) and PD-derived intercellular gateways (PdIGs): Beyond morphology.Protoplasma · 2026Review
- Identification ofGenes · 2025Article
- Silencing of Putative Plasmodesmata-Associated GenesPlants (Basel, Switzerland) · 2025Article
- Tobacco Mosaic Virus Movement: From Capsid Disassembly to Transport Through Plasmodesmata.Viruses · 2025Review
- Article
- Cellular Partners of Tobamoviral Movement Proteins.International journal of molecular sciences · 2025Review
- Article
- Five questions on the cell-to-cell movement ofBBA advances · 2024Article
- Analysis of plasmodesmata permeability using cultured tobacco BY-2 cells entrapped in microfluidic chips.Journal of plant research · 2022Article
- Plasmodesmata Structural Components and Their Role in Signaling and Plant Development.Methods in molecular biology (Clifton, N.J.) · 2022Review
- Article
- Genome-wide identification, evolutionary estimation and functional characterization of two cotton CKI gene types.BMC plant biology · 2021Article
- Receptor-like kinase BAM1 facilitates early movement of the Tobacco mosaic virus.Communications biology · 2021Article
- Variability, Functions and Interactions of Plant Virus Movement Proteins: What Do We Know So Far?Microorganisms · 2021Review
- Article
- RICE CENTRORADIALIS 1, a TFL1-like Gene, Responses to Drought Stress and Regulates Rice Flowering Transition.Rice (New York, N.Y.) · 2020Article
- Casein Kinase 1 Regulates Cytorhabdovirus Replication and Transcription by Phosphorylating a Phosphoprotein Serine-Rich Motif.The Plant cell · 2020Article
- Phosphorylations of the Abutilon Mosaic Virus Movement Protein Affect Its Self-Interaction, Symptom Development, Viral DNA Accumulation, and Host Range.Frontiers in plant science · 2020Article
17 more citing papers are in PubMed but not listed here.
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Authors and funding
6 authors at 3 institutions in 1 country.
Funding
Abstract
Cell-to-cell communication in plants involves the trafficking of macromolecules through specialized intercellular organelles, termed plasmodesmata. This exchange of proteins and RNA is likely regulated, and a role for protein phosphorylation has been implicated, but specific components remain to be identified. Here, we describe the molecular characterization of a plasmodesmal-associated protein kinase (PAPK). A 34-kD protein, isolated from a plasmodesmal preparation, exhibits calcium-independent kinase activity and displays substrate specificity in that it recognizes a subset of viral and endogenous non-cell-autonomous proteins. This PAPK specifically phosphorylates the C-terminal residues of tobacco mosaic virus movement protein (TMV MP); this posttranslational modification has been shown to affect MP function. Molecular analysis of purified protein established that tobacco (Nicotiana tabacum) PAPK is a member of the casein kinase I family. Subcellular localization studies identified a possible Arabidopsis thaliana PAPK homolog, PAPK1. TMV MP and PAPK1 are colocalized within cross-walls in a pattern consistent with targeting to plasmodesmata. Moreover, Arabidopsis PAPK1 also phosphorylates TMV MP in vitro at its C terminus. These results strongly suggest that Arabidopsis PAPK1 is a close homolog of tobacco PAPK. Thus, PAPK1 represents a novel plant protein kinase that is targeted to plasmodesmata and may play a regulatory role in macromolecular trafficking between plant cells.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.