Search results for "Ligases"

showing 2 items of 72 documents

Translation of HTT mRNA with expanded CAG repeats is regulated by the MID1-PP2A protein complex.

2012

Expansion of CAG repeats is a common feature of various neurodegenerative disorders, including Huntington's disease. Here we show that expanded CAG repeats bind to a translation regulatory protein complex containing MID1, protein phosphatase 2A and 40S ribosomal S6 kinase. Binding of the MID1-protein phosphatase 2A protein complex increases with CAG repeat size and stimulates translation of the CAG repeat expansion containing messenger RNA in a MID1-, protein phosphatase 2A- and mammalian target of rapamycin-dependent manner. Our data indicate that pathological CAG repeat expansions upregulate protein translation leading to an overproduction of aberrant protein and suggest that the MID1-com…

metabolism [Microtubule Proteins]General Physics and AstronomyHTT protein humanRibosomal s6 kinaseMice0302 clinical medicinemetabolism [Transcription Factors]Protein Phosphatase 2Luciferasesgenetics [Nerve Tissue Proteins]genetics [Protein Biosynthesis]0303 health sciencesHuntingtin ProteinMultidisciplinarybiologyTOR Serine-Threonine KinasesNuclear ProteinsTranslation (biology)3. Good healthmetabolism [Luciferases]Microtubule Proteinsddc:500metabolism [Nuclear Proteins]genetics [Trinucleotide Repeat Expansion]Protein Bindingcongenital hereditary and neonatal diseases and abnormalitiesMTOR protein humanUbiquitin-Protein LigasesBlotting WesternNerve Tissue Proteinsmetabolism [TOR Serine-Threonine Kinases]metabolism [RNA Messenger]General Biochemistry Genetics and Molecular Biology03 medical and health sciencesgenetics [RNA Messenger]mental disordersHuntingtin ProteinAnimalsHumansEukaryotic Small Ribosomal SubunitRNA MessengerNucleotide Motifs030304 developmental biologyMessenger RNAmetabolism [Nerve Tissue Proteins]RNAmetabolism [Protein Phosphatase 2]General ChemistryProtein phosphatase 2Molecular biologynervous system diseasesProtein Biosynthesisbiology.proteinTrinucleotide repeat expansionTrinucleotide Repeat Expansion030217 neurology & neurosurgeryMid1 protein humanHeLa CellsTranscription FactorsNature communications
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The E3 Ubiquitin Ligase MID1 Catalyzes Ubiquitination and Cleavage of Fu

2014

Sonic Hedgehog (SHH)-GLI signalling plays an important role during embryogenesis and in tumorigenesis. The survival and growth of several types of cancer depend on autonomously activated SHH-GLI signalling. A protein complex containing the ubiquitin-ligase MID1 and protein phosphatase 2A (PP2A) regulates the nuclear localization and transcriptional activity of GLI3, a transcriptional effector molecule of SHH, in cancer cell lines with autonomously activated SHH signalling. However, the exact molecular mechanisms that mediate the interaction between MID1 and GLI3 remained unknown. Here, we show that MID1 catalyses the ubiquitination and proteasomal cleavage of the GLI3-regulator Fu. Our data…

metabolism [Microtubule Proteins]Ubiquitin-conjugating enzymeBiochemistrymetabolism [Protein Serine-Threonine Kinases]Ubiquitinmetabolism [Transcription Factors]Nuclear proteinSonic hedgehogbiologymetabolism [Protein-Serine-Threonine Kinases]Nuclear Proteinsrespiratory systemProtein-Serine-Threonine KinasesUbiquitin ligaseGene Expression Regulation NeoplasticGLI3 protein humanBiochemistryddc:540embryonic structuresMicrotubule Proteinsmetabolism [Hedgehog Proteins]Function and Dysfunction of the Nervous Systemmetabolism [Nuclear Proteins]Signal Transductionmetabolism [Kruppel-Like Transcription Factors]Proteasome Endopeptidase Complexanimal structuresSTK36 protein humanUbiquitin-Protein LigasesKruppel-Like Transcription FactorsNerve Tissue ProteinsProtein Serine-Threonine Kinaseschemistry [Ubiquitin-Protein Ligases]CatalysisZinc Finger Protein Gli3Cell Line TumorGLI3HumansHedgehog Proteinsmetabolism [Proteasome Endopeptidase Complex]metabolism [Cell Nucleus]Molecular Biologychemistry [Lysine]DNA PrimersCell Nucleusmetabolism [Nerve Tissue Proteins]UbiquitinLysineUbiquitinationCell BiologyProtein phosphatase 2chemistry [Ubiquitin]Proteasomebiology.proteinSHH protein humanhuman activitiesMid1 protein humanHeLa CellsTranscription FactorsJournal of Biological Chemistry
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