Search results for "BINDING"

showing 10 items of 3896 documents

On-demand autophagic network adaptations upon limited lipid availability

2020

The de novo synthesis of autophagic vesicles is strongly dependent on sufficient lipid supply. Recently, the RAB GTPase RAB18 was shown to affect autophagy by mediating fatty acid release from lipid droplets, which are lipid sources for autophagosome formation. The stable loss of RAB18 interfered with fatty acid release from the lipid reservoirs and provoked autophagy network adaptations aiming to maintain autophagic activity under lipid limiting conditions.

0301 basic medicineAutophagy-Related ProteinsGTPaseBiologyModels Biological03 medical and health sciencesLipid dropletAutophagyHumansMolecular Biologychemistry.chemical_classification030102 biochemistry & molecular biologyVesicleAutophagyFatty acidLipid DropletsCell BiologyAdaptation PhysiologicalLipidsCell biologyDe novo synthesis030104 developmental biologychemistryrab GTP-Binding Proteinslipids (amino acids peptides and proteins)RabCommentary and ViewsRAB18Autophagy
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Progranulin overexpression in sensory neurons attenuates neuropathic pain in mice: Role of autophagy

2016

Peripheral or central nerve injury is a frequent cause of chronic pain and the mechanisms are not fully understood. Using newly generated transgenic mice we show that progranulin overexpression in sensory neurons attenuates neuropathic pain after sciatic nerve injury and accelerates nerve healing. A yeast-2-hybrid screen revealed putative interactions of progranulin with autophagy-related proteins, ATG12 and ATG4b. This was supported by colocalization and proteomic studies showing regulations of ATG13 and ATG4b and other members of the autophagy network, lysosomal proteins and proteins involved in endocytosis. The association of progranulin with the autophagic pathway was functionally confi…

0301 basic medicineAutophagy-Related ProteinsMiceProgranulinsGanglia SpinalDorsal root gangliaGranulinsPain MeasurementCD11b AntigenMicrofilament ProteinsChronic painSciatic nerve injuryCysteine Endopeptidasesmedicine.anatomical_structureNociceptionNeurologyNeuropathic painIntercellular Signaling Peptides and Proteinsmedicine.symptomMicrotubule-Associated ProteinsNerve injuryProgranulinSensory Receptor CellsGreen Fluorescent ProteinsPainMice Transgeniclcsh:RC321-571ATG1203 medical and health sciencesLysosomal-Associated Membrane Protein 1mental disordersmedicineAutophagyAnimalslcsh:Neurosciences. Biological psychiatry. NeuropsychiatryActivating Transcription Factor 3Sensory neuronbusiness.industryAutophagyCalcium-Binding ProteinsNerve injurymedicine.diseaseSensory neuronMice Inbred C57BLDisease Models Animal030104 developmental biologyGene OntologyNeuralgiabusinessApoptosis Regulatory ProteinsNeuroscienceNeurobiology of Disease
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Identification and Characterization of a Single High-Affinity Fatty Acid Binding Site in Human Serum Albumin.

2017

A single high-affinity fatty acid binding site in the important human transport protein serum albumin (HSA) is identified and characterized using an NBD (7-nitrobenz-2-oxa-1,3-diazol-4-yl)-C12 fatty acid. This ligand exhibits a 1:1 binding stoichiometry in its HSA complex with high site-specificity. The complex dissociation constant is determined by titration experiments as well as radioactive equilibrium dialysis. Competition experiments with the known HSA-binding drugs warfarin and ibuprofen confirm the new binding site to be different from Sudlow-sites I and II. These binding studies are extended to other albumin binders and fatty acid derivatives. Furthermore an X-ray crystal structure …

0301 basic medicineAzolesSerum albuminIbuprofenSerum Albumin HumanMolecular Dynamics Simulation010402 general chemistryCrystallography X-Ray01 natural sciencesCatalysis03 medical and health sciencesProtein DomainsFatty acid bindingmedicineFluorescence Resonance Energy TransferHumansBinding siteBovine serum albuminNitrobenzeneschemistry.chemical_classificationBinding SitesbiologyChemistry010405 organic chemistryFatty AcidsFatty acidGeneral ChemistryGeneral MedicineLigand (biochemistry)Human serum albumin0104 chemical sciencesbody regionsDissociation constant030104 developmental biologyBiochemistryembryonic structuresbiology.proteinWarfarinmedicine.drugProtein BindingAngewandte Chemie (International ed. in English)
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Virus found in a boreal lake links ssDNA and dsDNA viruses.

2017

Viruses have impacted the biosphere in numerous ways since the dawn of life. However, the evolution, genetic, structural, and taxonomic diversity of viruses remain poorly understood, in part because sparse sampling of the virosphere has concentrated mostly on exploring the abundance and diversity of dsDNA viruses. Furthermore, viral genomes are highly diverse, and using only the current sequence-based methods for classifying viruses and studying their phylogeny is complicated. Here we describe a virus, FLiP (Flavobacterium-infecting, lipid-containing phage), with a circular ssDNA genome and an internal lipid membrane enclosed in the icosahedral capsid. The 9,174-nt-long genome showed limite…

0301 basic medicineBACTERIALviruksetProtein ConformationviruseslipiditGenomechemistry.chemical_compoundProtein structureBINDINGVIRAL UNIVERSE1183 Plant biology microbiology virologyGeneticsMultidisciplinaryCRYOELECTRON MICROSCOPYBiological Sciencesboreaalinen vyöhykeCapsidViral evolutionCAPSID PROTEINLineage (genetic)030106 microbiologyGENOMESDNA Single-Strandedcryo-electron microscopyGenome ViralBiologyPROTEIN STRUCTURESjärvetFlavobacteriumVirusbakteriofagitlipids03 medical and health sciencesCapsidPhylogeneticsBacteriophage PRD1structuregenometa1182DNA VirusesDNAEVOLUTIONLakes030104 developmental biologychemistryperimäCapsid ProteinsCOMMUNITIESDNAProceedings of the National Academy of Sciences of the United States of America
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Virus-encoded microRNA contributes to the molecular profile of EBV-positive Burkitt lymphomas

2015

Burkitt lymphoma (BL) is an aggressive neoplasm characterized by consistent morphology and phenotype, typical clinical behavior and distinctive molecular profile. The latter is mostly driven by the MYC over-expression associated with the characteristic translocation (8;14) (q24; q32) or with variant lesions. Additional genetic events can contribute to Burkitt Lymphoma pathobiology and retain clinical significance. A pathogenetic role for Epstein-Barr virus infection in Burkitt lymphomagenesis has been suggested; however, the exact function of the virus is largely unknown. In this study, we investigated the molecular profiles (genes and microRNAs) of Epstein-Barr virus-positive and -negative…

0301 basic medicineBART6; Burkitt lymphoma; EBV; miRNA; pathogenesisEpstein-Barr Virus InfectionsHerpesvirus 4 HumanpathogenesiRNA-binding proteinRNA-Binding ProteinEpstein-Barr Virus Infectionhemic and lymphatic diseasesCluster AnalysisViralOligonucleotide Array Sequence AnalysisGeneticsBART6; Burkitt lymphoma; EBV; miRNA; pathogenesis; Burkitt Lymphoma; Cluster Analysis; Cytoskeletal Proteins; Epstein-Barr Virus Infections; Gene Expression Profiling; Gene Expression Regulation Neoplastic; Gene Expression Regulation Viral; Herpesvirus 4 Human; Host-Pathogen Interactions; Humans; Immunohistochemistry; MicroRNAs; Neoplasm Proteins; Oligonucleotide Array Sequence Analysis; Phospholipase C delta; RNA Viral; RNA-Binding Proteins; Reverse Transcriptase Polymerase Chain Reaction; ras Proteins; OncologyReverse Transcriptase Polymerase Chain ReactionpathogenesisMicrofilament ProteinsIntracellular Signaling Peptides and ProteinsBurkitt lymphomaRNA-Binding ProteinsMicroRNAPhenotypeImmunohistochemistryNeoplasm ProteinsHost-Pathogen InteractionGene Expression Regulation NeoplasticOncologyHost-Pathogen InteractionsRNA ViralHumanResearch PaperGene Expression Regulation ViralBART6BiologySettore MED/08 - Anatomia PatologicaVirusNeoplasm Protein03 medical and health sciencesEBVmicroRNACytoskeletal ProteinmedicineHumansEpstein–Barr virus infectionGenemiRNANeoplasticCluster AnalysiOligonucleotide Array Sequence AnalysiGene Expression ProfilingHerpesvirus 4ras Proteinmedicine.diseaseLymphomaGene expression profilingCytoskeletal ProteinsMicroRNAs030104 developmental biologyGene Expression Regulationras ProteinsRNABART6; EBV; burkitt lymphoma; miRNA; pathogenesisPhospholipase C deltaOncotarget
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Dynamics and predicted drug response of a gene network linking dedifferentiation with β-catenin dysfunction in hepatocellular carcinoma

2019

Background & Aims Alterations of individual genes variably affect the development of hepatocellular carcinoma (HCC). Thus, we aimed to characterize the function of tumor-promoting genes in the context of gene regulatory networks (GRNs). Methods Using data from The Cancer Genome Atlas, from the LIRI-JP (Liver Cancer – RIKEN, JP project), and from our transcriptomic, transfection and mouse transgenic experiments, we identify a GRN which functionally links LIN28B-dependent dedifferentiation with dysfunction of β-catenin (CTNNB1). We further generated and validated a quantitative mathematical model of the GRN using human cell lines and in vivo expression data. Results We found that LIN28B and C…

0301 basic medicineBeta-cateninCarcinoma HepatocellularHepatocellular carcinomaLIN28BCellGene regulatory networkPrincipal component analysisMice TransgenicBiologyTransfectionTranscriptomeCohort Studies03 medical and health sciencesMice0302 clinical medicineMathematical modelmicroRNAmedicineAnimalsHumansGene Regulatory NetworksCTNNB1Genebeta CateninHepatologySequence Analysis RNALiver NeoplasmsGene regulatory networkRNA-Binding ProteinsHGF/MET pathwayMicroRNAHep G2 CellsHCCSModels TheoreticalPrognosisPersonalized medicinedigestive system diseases030104 developmental biologymedicine.anatomical_structureCancer researchSMARCA4biology.protein030211 gastroenterology & hepatologyTranscriptome
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The cytoprotective protein MANF promotes neuronal survival independently from its role as a GRP78 cofactor

2021

Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an endoplasmic reticulum (ER)-stress-regulated protein exhibiting cytoprotective properties through a poorly understood mechanism in various in vitro and in vivo models of neuronal and non-neuronal damage. Although initially characterized as a secreted neurotrophic factor for midbrain dopamine neurons, MANF has recently gained more interest for its intracellular role in regulating the ER homeostasis, including serving as a cofactor of the chaperone glucose-regulated protein 78 (GRP78). We aimed for a better understanding of the neuroprotective mechanisms of MANF. Here we show for the first time that MANF promotes the survival of …

0301 basic medicineBiFC bimolecular fluorescence complementationMST microscale thermophoresisPDIA1 protein disulfide isomerase family A member 1ApoptosisNEUROTROPHIC FACTOR MANFEndoplasmic ReticulumBiochemistryprotein-protein interactionMiceBimolecular fluorescence complementationUPR unfolded protein responseENDOPLASMIC-RETICULUM STRESSMesencephalonNeurotrophic factorsInsulin-Secreting CellsProtein Interaction MappingBINDINGCOMPREHENSIVE RESOURCEATF6unfolded protein response (UPR)PDIA6 protein disulfide isomerase family A member 6PPIs protein-protein interactionsEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsNPTN neuroplastinbiologyChemistryapoptosisunfolded protein responsedopamine neurons3. Good healthCell biologyGDNF glial cell line–derived neurotrophic factorIRE1-ALPHASBD substrate-binding domainendoplasmic reticulum stressMANF mesencephalic astrocyte-derived neurotrophic factorTm tunicamycinneuroprotectionResearch ArticleProtein BindingSignal TransductionGRP78Protein Disulfide-Isomerase FamilyCell SurvivalTH tyrosine hydroxylasePrimary Cell CultureSCG superior cervical ganglionProtein Disulfide-IsomerasesIRE1 inositol-requiring enzyme 1ER-STRESSER endoplasmic reticulum03 medical and health sciencesohjelmoitunut solukuolemaC-MANF C-terminal domain of MANFCSPs chemical shift perturbationsAnimalsHumansHSP70 Heat-Shock ProteinsNerve Growth FactorsNBD nucleotide-binding domainNMR nuclear magnetic resonanceMolecular Biology030102 biochemistry & molecular biologyBIPATF6Dopaminergic NeuronsGene Expression ProfilingBinding proteinneuronal cell deathDISSOCIATIONCell BiologyNEI nucleotide exchange inhibitorEmbryo MammalianadenosiinitrifosfaattiATPhermosolutmesencephalic astrocyte-derived neurotrophic factorprotein–protein interactionPERK protein kinase RNA-like ER kinaseHEK293 Cells030104 developmental biologyGene Expression RegulationChaperone (protein)Tg thapsigarginbiology.proteinUnfolded protein responseAP-MS affinity purification mass spectrometry1182 Biochemistry cell and molecular biologyGFP-SH SH-tagged GFPendoplasmic reticulum stress (ER stress)DA dopaminemesencephalic astrocyte-derived neurotrophic factor (MANF)proteiinitNeuroplastin
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Stability of a Split Streptomycin Binding Aptamer

2016

Here we investigated the stability of an aptamer, which is formed by two RNA strands and binds the antibiotic streptomycin. Molecular dynamics simulations in aqueous solution confirmed the geometry and the pattern of hydrogen bond interactions that was derived from the crystal structure (1NTB). The result of umbrella sampling simulations indicated a favored streptomycin binding with a free energy of ΔGbind° = −101.7 kJ mol–1. Experimentally, the increase in oligonucleotide stability upon binding of streptomycin was probed by single-molecule force spectroscopy. Rate dependent force spectroscopy measurements revealed a decrease in the natural off-rate (koff-COMPLEX = 0.22 ± 0.16 s–1) for the …

0301 basic medicineBinding SitesAqueous solutionChemistryHydrogen bondAptamerForce spectroscopyWaterHydrogen BondingAptamers NucleotideMolecular Dynamics SimulationSurfaces Coatings and FilmsGibbs free energy03 medical and health sciencessymbols.namesakeMolecular dynamicsCrystallography030104 developmental biologyStreptomycinMaterials ChemistrysymbolsThermodynamicsPhysical and Theoretical ChemistryUmbrella samplingBinding siteThe Journal of Physical Chemistry B
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ALS-Related Mutant FUS Protein Is Mislocalized to Cytoplasm and Is Recruited into Stress Granules of Fibroblasts from Asymptomatic <b><i>…

2017

<b><i>Background:</i></b> Amyotrophic lateral sclerosis (ALS) shows a strong genetic basis, with <i>SOD1</i>, <i>FUS</i>, <i>TARDBP</i>, and <i>C9ORF72 </i>being the genes most frequently involved<i>. </i>This has allowed identification of asymptomatic mutation carriers, which may be of help in understanding the molecular changes preceding disease onset. <b><i>Objectives:</i></b> We studied the cellular expression of FUS protein and the effect of heat-shock- and dithiothreitol-induced stress in fibroblasts from <i>FUS</i> P525L mutation carriers, healthy controls, and pati…

0301 basic medicineBiologymedicine.diseaseSubcellular localizationTARDBPMolecular biology03 medical and health sciencesCell nucleus030104 developmental biology0302 clinical medicineStress granulemedicine.anatomical_structureNeurologyC9orf72CytoplasmmedicineNeurology (clinical)Amyotrophic lateral sclerosis030217 neurology & neurosurgeryRNA-Binding Protein FUSNeurodegenerative Diseases
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Temporal quantitative phosphoproteomics of ADP stimulation reveals novel central nodes in platelet activation and inhibition

2017

Adenosine diphosphate (ADP) enhances platelet activation by virtually any other stimulant to complete aggregation. It binds specifically to the G-protein-coupled membrane receptors P2Y1 and P2Y12, stimulating intracellular signaling cascades, leading to integrin aIIbb3 activation, a process antagonized by endothelial prostacyclin. P2Y12 inhibitors are among the most successful antiplatelet drugs, however, show remarkable variability in efficacy. We reasoned whether a more detailed molecular understanding of ADP-induced protein phosphorylation could identify (1) critical hubs in platelet signaling toward aggregation and (2) novel molecular targets for antiplatelet treatment strategies. We ap…

0301 basic medicineBlood PlateletsPHOSPHATASEImmunologyBlotting WesternUBIQUITINATIONBINDING PROTEIN STXBP5Biochemistry03 medical and health scienceschemistry.chemical_compoundGTP-binding protein regulatorsP2Y12HumansProtein phosphorylationPlatelet activationIloprostPHOSPHORYLATIONCOMBINATIONChemistryPhosphoproteomicsPATHWAYSCell BiologyHematologyPlatelet ActivationSIGNALING REVEALSCell biologyAdenosine DiphosphateAdenosine diphosphate030104 developmental biologyCLOPIDOGRELPhosphorylationPROTEOMICSSECRETIONSignal transductionPlatelet Aggregation InhibitorsSignal TransductionBlood
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