Search results for "Ubiquitin ligase complex"

showing 3 items of 3 documents

TORC1 controls G1–S cell cycle transition in yeast via Mpk1 and the greatwall kinase pathway

2015

The target of rapamycin complex 1 (TORC1) pathway couples nutrient, energy and hormonal signals with eukaryotic cell growth and division. In yeast, TORC1 coordinates growth with G1–S cell cycle progression, also coined as START, by favouring the expression of G1 cyclins that activate cyclin-dependent protein kinases (CDKs) and by destabilizing the CDK inhibitor Sic1. Following TORC1 downregulation by rapamycin treatment or nutrient limitation, clearance of G1 cyclins and C-terminal phosphorylation of Sic1 by unknown protein kinases are both required for Sic1 to escape ubiquitin-dependent proteolysis prompted by its flagging via the SCFCdc4 (Skp1/Cul1/F-box protein) ubiquitin ligase complex.…

BioquímicaBiologiaSaccharomyces cerevisiae ProteinsImmunoblottingGeneral Physics and AstronomyCell Cycle ProteinsSaccharomyces cerevisiaeMechanistic Target of Rapamycin Complex 1ArticleGeneral Biochemistry Genetics and Molecular Biology03 medical and health sciences0302 clinical medicineCyclin-dependent kinaseCyclinsImmunoprecipitationProtein Phosphatase 2Cell division control protein 4PhosphorylationProtein kinase ACyclin-Dependent Kinase Inhibitor Proteins030304 developmental biology0303 health sciencesMultidisciplinarybiologyTOR Serine-Threonine KinasesUbiquitin-Protein Ligase ComplexesGeneral ChemistryBlotting NorthernFlow CytometryG1 Phase Cell Cycle CheckpointsSic1Cyclin-Dependent KinasesCell biologyBiochemistryMultiprotein Complexes030220 oncology & carcinogenesisUbiquitin ligase complexbiology.proteinIntercellular Signaling Peptides and ProteinsPhosphorylationTOR Serine-Threonine KinasesMitogen-Activated Protein KinasesPeptidesProtein KinasesCyclin-dependent kinase inhibitor proteinNature Communications
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Alix protein is substrate of Ozz-E3 ligase and modulates actin remodeling in skeletal muscle

2012

Alix/AIP1 is a multifunctional adaptor protein that participates in basic cellular processes, including membrane trafficking and actin cytoskeleton assembly, by binding selectively to a variety of partner proteins. However, the mechanisms regulating Alix turnover, subcellular distribution, and function in muscle cells are unknown. We now report that Alix is expressed in skeletal muscle throughout myogenic differentiation. In myotubes, a specific pool of Alix colocalizes with Ozz, the substrate-binding component of the muscle-specific ubiquitin ligase complex Ozz-E3. We found that interaction of the two endogenous proteins in the differentiated muscle fibers changes Alix conformation and pro…

Ubiquitin-Protein LigasesMuscle Fibers Skeletalmacromolecular substancesBiochemistryCell LineMiceCell MovementTwo-Hybrid System TechniquesmedicineCell AdhesionAnimalsProtein Interaction Domains and MotifsPseudopodiaMuscle SkeletalMolecular BiologyActinMice KnockoutbiologyMyogenesisSettore BIO/16 - Anatomia UmanaCalcium-Binding ProteinsUbiquitinationActin remodelingSkeletal muscleUbiquitin-Protein Ligase ComplexesCell BiologyActin cytoskeletonUbiquitin ligaseCell biologyRepressor ProteinsActin CytoskeletonProtein Transportmedicine.anatomical_structureUbiquitin ligase complexbiology.proteinCell Migration Myogenesis Skeletal Muscle Ubiquitin Ligase Ubiquitination Alix F-actin Ozz-E3 Ubiquitin Ligase Skeletal Muscle CellsCortactinCortactinProtein Binding
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dsRNA induces apoptosis through an atypical death complex associating TLR3 to caspase-8

2012

Toll-like receptor 3 (TLR3) is a pattern-recognition receptor known to initiate an innate immune response when stimulated by double-stranded RNA (dsRNA). Components of TLR3 signaling, including TIR domain-containing adapter inducing IFN-α (TRIF), have been demonstrated to contribute to dsRNA-induced cell death through caspase-8 and receptor interacting protein (RIP)1 in various human cancer cells. We provide here a detailed analysis of the caspase-8 activating machinery triggered in response to Poly(I:C) dsRNA. Engagement of TLR3 by dsRNA in both type I and type II lung cancer cells induces the formation of an atypical caspase-8-containing complex that is devoid of classical death receptors…

Ubiquitin-Protein LigasesvirusesApoptosischemical and pharmacologic phenomenaInhibitor of Apoptosis ProteinsCell Line TumorHumansFADDMolecular BiologyRNA Double-StrandedDeath domainCaspase 8Original PaperbiologyUbiquitinationRNA-Binding Proteinshemic and immune systemsMDA5Cell BiologyTNF Receptor-Associated Factor 2Fas receptorTRADDBaculoviral IAP Repeat-Containing 3 ProteinTNF Receptor-Associated Death Domain ProteinToll-Like Receptor 3Cell biologyNuclear Pore Complex ProteinsUbiquitin ligase complexDeath-inducing signaling complexTLR3biology.proteinSignal TransductionCell Death & Differentiation
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