ArticlePlant molecular biology1997
Transcription factor phosphorylation by a protein kinase associated with chloroplast RNA polymerase from mustard (Sinapis alba).
Article in Plant molecular biology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 96 citations in OpenAlex.
- Phylogenetic diversity of light-dependent phosphorylation of Thr78 in Rubisco activase.Journal of experimental botany · 2025Article
- Plastid Gene Transcription: An Update on Promoters and RNA Polymerases.Methods in molecular biology (Clifton, N.J.) · 2021Article
- pTAC10, an S1-domain-containing component of the transcriptionally active chromosome complex, is essential for plastid gene expression in Arabidopsis thaliana and is phosphorylated by chloroplast-targeted casein kinase II.Photosynthesis research · 2018Article
- Post-translational Modifications in Regulation of Chloroplast Function: Recent Advances.Frontiers in plant science · 2017Review
- Article
- A purification strategy for analysis of the DNA/RNA-associated sub-proteome from chloroplasts of mustard cotyledons.Frontiers in plant science · 2014Article
- Circadian regulation of chloroplast transcription in Chlamydomonas is accompanied by little or no fluctuation in RPOD levels or core RNAP activity.Molecular biology reports · 2012Article
- Signal integration by chloroplast phosphorylation networks: an update.Frontiers in plant science · 2012Article
- Identification of essential subunits in the plastid-encoded RNA polymerase complex reveals building blocks for proper plastid development.Plant physiology · 2011Article
- Comparative phosphoproteome profiling reveals a function of the STN8 kinase in fine-tuning of cyclic electron flow (CEF).Proceedings of the National Academy of Sciences of the United States of America · 2011Article
- AtSIG6, a plastid sigma factor from Arabidopsis, reveals functional impact of cpCK2 phosphorylation.The Plant journal : for cell and molecular biology · 2010Article
- Large-scale Arabidopsis phosphoproteome profiling reveals novel chloroplast kinase substrates and phosphorylation networks.Plant physiology · 2009Article
- Article
- A heterocomplex of iron superoxide dismutases defends chloroplast nucleoids against oxidative stress and is essential for chloroplast development in Arabidopsis.The Plant cell · 2008Article
- A Survey of Chloroplast Protein Kinases and Phosphatases in Arabidopsis thaliana.Current genomics · 2008Article
- Nucleus-encoded plastid sigma factor SIG3 transcribes specifically the psbN gene in plastids.Nucleic acids research · 2007Article
- Dual temporal role of plastid sigma factor 6 in Arabidopsis development.Plant physiology · 2006Article
- pTAC2, -6, and -12 are components of the transcriptionally active plastid chromosome that are required for plastid gene expression.The Plant cell · 2006Article
- Structure, circadian regulation and bioinformatic analysis of the unique sigma factor gene in Chlamydomonas reinhardtii.Photosynthesis research · 2004Article
- Differential regulation of glucose-6-phosphate dehydrogenase isoenzyme activities in potato.Plant physiology · 2003Article
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The chloroplast transcription machinery involves multiple components with both catalytic and regulatory functions. Here we describe a serine-specific protein kinase activity that is associated with the major chloroplast RNA polymerase and phosphorylates sigma-like transcription factors in vitro. The kinase activity can be assigned to a 54 kDa polypeptide of partially purified RNA polymerase (KPC, kinase polymerase complex). This polypeptide is also present in a smaller complex that contains several putative polymerase subunits and reveals kinase activity but lacks transcription activity (KC, kinase complex). Although the 54 kDa component could not be chromatographically separated from the rest of this complex without loss of activity, it retained residual kinase activity in an electrophoretic blot assay. The polymerase-associated kinase is itself affected by in vitro phosphorylation and dephosphorylation, which raises the possibility that it is part of a signalling cascade that controls chloroplast transcription in vivo by factor phosphorylation.
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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.