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RESEARCH PRODUCT
JNK phosphorylation relieves HDAC3-dependent suppression of the transcriptional activity of c-Jun
Erwin F. WagnerCarsten WeissCarsten WeissSandra M. SchneiderXiaohong ZhangDirk BohmannEdward Setosubject
ThreonineTranscriptional ActivationTranscription GeneticMAP Kinase Kinase 4Proto-Oncogene Proteins c-junRecombinant Fusion ProteinsMitogen-activated protein kinase kinaseHistone DeacetylasesGeneral Biochemistry Genetics and Molecular BiologyCell LinePhosphorylation cascadeMiceSuppression GeneticGenes ReporterSerineAnimalsHumansRNA MessengerPhosphorylationMolecular BiologyTranscription factorSequence DeletionMitogen-Activated Protein Kinase KinasesGeneral Immunology and MicrobiologybiologyGeneral Neurosciencec-junJNK Mitogen-Activated Protein KinasesArticles3T3 CellsHDAC3Molecular biologyProtein Structure TertiaryMitogen-activated protein kinaseMutationMutagenesis Site-Directedbiology.proteinPhosphorylationSignal transductionProtein Bindingdescription
The AP-1 transcription factor c-Jun is a prototypical nuclear effector of the JNK signal transduction pathway. The integrity of JNK phosphorylation sites at serines 63/73 and at threonines 91/93 in c-Jun is essential for signal-dependent target gene activation. We show that c-Jun phosphorylation mediates dissociation of an inhibitory complex, which is associated with histone deacetylase 3 (HDAC3). The subsequent events that ultimately cause increased mRNA synthesis are independent of c-Jun phosphorylation and its interaction with JNK. These findings provide an 'activation by de-repression' model as an explanation for the stimulatory function of JNK on c-Jun.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-07-15 | The EMBO Journal |