Search results for "Binding domain"

showing 10 items of 81 documents

Role of Bacillus thuringiensis Cry1A toxins domains in the binding to the ABCC2 receptor from Spodoptera exigua

2018

Abstract Cry proteins from Bacillus thuringiensis (Bt) have been used to control insect pests either as formulated sprays or as in Bt-crops. However, field-evolved resistance to Bt proteins is threatening the long-term use of Bt products. The SeABCC2 locus has been genetically linked to resistance to a Bt bioinsecticide (Xentari™) in Spodoptera exigua (a mutation producing a truncated form of the transporter lacking an ATP binding domain was found in the resistant insects). Here, we investigated the role of SeABCC2 in the mode of action of Cry1Aa, Cry1Ab, Cry1Ac, Cry1Ca, and two Cry1A-1Ca hybrids by expressing the receptor in Sf21 and HEK293T cell lines. Cell toxicity assays showed that Sf2…

0106 biological sciences0301 basic medicineCell SurvivalBacillus thuringiensisGene ExpressionSpodopteraSpodopteraTransfection01 natural sciencesBiochemistryHemolysin ProteinsStructure-Activity Relationship03 medical and health sciencesBacterial ProteinsProtein DomainsBacillus thuringiensisExiguaSf9 CellsAnimalsHumansProtein IsoformsBinding siteReceptorMolecular BiologySf21Binding SitesBacillus thuringiensis Toxinsbiologyfungibiology.organism_classificationMultidrug Resistance-Associated Protein 2Recombinant ProteinsClone CellsEndotoxins010602 entomologyHEK293 Cells030104 developmental biologyBiochemistryCry1AcLarvaInsect ScienceMutationInsect ProteinsMultidrug Resistance-Associated ProteinsPlasmidsProtein BindingBinding domainInsect Biochemistry and Molecular Biology
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The Spodoptera exigua ABCC2 Acts as a Cry1A Receptor Independently of its Nucleotide Binding Domain II

2019

ABC proteins are primary-active transporters that require the binding and hydrolysis of ATP to transport substrates across the membrane. Since the first report of an ABCC2 transporter as receptor of Cry1A toxins, the number of ABC transporters known to be involved in the mode of action of Cry toxins has increased. In Spodoptera exigua, a mutation in the SeABCC2 gene is described as genetically linked to resistance to the Bt-product XentariTM. This mutation affects an intracellular domain involved in ATP binding, but not the extracellular loops. We analyzed whether this mutation affects the role of the SeABCC2 as a functional receptor to Cry1A toxins. The results show that Sf21 cells express…

0106 biological sciencesCell SurvivalHealth Toxicology and Mutagenesislcsh:MedicineReceptors Cell SurfaceATP-binding cassette transporterSpodopteraSpodopteraToxicologymedicine.disease_causeBt resistance01 natural sciencesArticleCell LineHemolysin Proteins03 medical and health sciencesBacterial Proteinsmode of actionGTP-Binding ProteinsATP hydrolysismedicineAnimalsReceptor030304 developmental biology0303 health sciencesMutationBacillus thuringiensis ToxinsbiologyChemistryfungilcsh:Rheterologous expressionTransporterbiology.organism_classificationMultidrug Resistance-Associated Protein 2Cell biologyEndotoxins010602 entomologyCyclic nucleotide-binding domainSf21 cellstruncated transporterInsect ProteinsHeterologous expressionMultidrug Resistance-Associated ProteinsToxins
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Wild

2021

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0106 biological sciencesGermplasmPhytochemistryTPCC total phenolic contentElderberry flowerISSR inter-simple sequence repeatElderberry fruitIC50 the half maximal inhibitory concentrationBerrySambucus nigra01 natural sciencesArticleTFC total flavonoid contentDW dry weightSARS-CoV2 severe acute respiratory syndrome coronavirus 2Rutinchemistry.chemical_compoundBotanyELISA enzyme linked immunosorbent assayCultivarAntiviralComputingMethodologies_COMPUTERGRAPHICSGenetic diversityACE2 angiotensin converting enzyme 2biology010405 organic chemistryPVPP polyvinylpyrrolidoneSambucus nigra L.biology.organism_classification0104 chemical scienceschemistryHPLC high-performance liquid chromatographyTEAC trolox equivalent anti-radical capacityGene poolAgronomy and Crop Science010606 plant biology & botanyBinding domainIndustrial crops and products
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2018

ABC (ATP binding cassette) transporters, ubiquitous in all kingdoms of life, carry out essential substrate transport reactions across cell membranes. Their transmembrane domains bind and translocate substrates and are connected to a pair of nucleotide binding domains, which bind and hydrolyze ATP to energize import or export of substrates. Over four decades of investigations into ABC transporters have revealed numerous details from atomic-level structural insights to their functional and physiological roles. Despite all these advances, a comprehensive understanding of the mechanistic principles of ABC transporter function remains elusive. The human multidrug resistance transporter ABCB1, al…

0301 basic medicine030102 biochemistry & molecular biologyIn silicoBiophysicsATP-binding cassette transporterCell BiologyPlasma protein bindingBiologyBiochemistry03 medical and health sciencesTransmembrane domain030104 developmental biologyProtein structureBiochemistryATP hydrolysisFunction (biology)ATP-binding domain of ABC transportersBiochimica et Biophysica Acta (BBA) - Biomembranes
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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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Stage 4S neuroblastoma tumors show a characteristic DNA methylation portrait

2016

Stage 4S neuroblastoma (NB) is a special type of NB found in infants with metastases at diagnosis and is associated with an excellent outcome due to its remarkable capacity to undergo spontaneous regression. As genomics have not been able to explain this intriguing clinical presentation, we here aimed at profiling the DNA methylome of stage 4S NB to better understand this phenomenon. To this purpose, differential methylation analyses between International Neuroblastoma Staging System (INSS) stage 4S, stage 4 and stage 1/2 were performed, using methyl-CpG-binding domain (MBD) sequencing data of 14 stage 4S, 14 stage 4, and 13 stage 1/2 primary NB tumors (all MYCN non-amplified in order not t…

0301 basic medicineCancer ResearchGenomicsBiologyspontaneous regressionneuroblastoma03 medical and health sciencesNeuroblastomaMedicine and Health SciencesmedicineEpigeneticsMolecular BiologyGenestage 4S (MS)GeneticsDNA methylationBiology and Life SciencesPromotermedicine.diseaseSubtelomere030104 developmental biologyDNA methylationStage 4S NeuroblastomaCancer researchmethyl-CpG-binding domain (MBD) sequencingResearch PaperEpigenetics
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The therapeutic potential of inorganic polyphosphate: A versatile physiological polymer to control coronavirus disease (COVID-19).

2021

Rationale: The pandemic caused by the novel coronavirus SARS-CoV-2 is advancing rapidly. In particular, the number of severe courses of the disease is still dramatically high. An efficient drug therapy that helps to improve significantly the fatal combination of damages in the airway epithelia, in the extensive pulmonary microvascularization and finally multiorgan failure, is missing. The physiological, inorganic polymer, polyphosphate (polyP) is a molecule which could prevent the initial phase of the virus life cycle, the attachment of the virus to the target cells, and improve the epithelial integrity as well as the mucus barrier. Results: Surprisingly, polyP matches perfectly with the ca…

0301 basic medicineDrug Evaluation PreclinicalMedicine (miscellaneous)Virus AttachmentRespiratory MucosaReviewmedicine.disease_causeAntiviral Agents03 medical and health sciencesMice0302 clinical medicinePolyphosphatesmedicineAnimalsHumansMode of actionReceptorPharmacology Toxicology and Pharmaceutics (miscellaneous)PandemicsMUC1Coronaviruschemistry.chemical_classificationChemistrySARS-CoV-2MucinMucinsCOVID-19Epithelial CellspolyphosphateMucusdigestive system diseasesCell biologyCOVID-19 Drug TreatmentDisease Models Animal030104 developmental biology030220 oncology & carcinogenesisAlkaline phosphataseNanoparticlesGlycoproteinviral receptor-binding domainTheranostics
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A Novel Open and Infectious Form of Echovirus 1.

2016

ABSTRACT One of the hallmarks of enterovirus genome delivery is the formation of an uncoating intermediate particle. Based on previous studies of mostly heated picornavirus particles, intermediate particles were shown to have externalized the innermost capsid protein (VP4) and exposed the N terminus of VP1 and to have reduced infectivity. Here, in addition to the native and intact particle type, we have identified another type of infectious echovirus 1 (E1) particle population during infection. Our results show that E1 is slightly altered during entry, which leads to the broadening of the major virion peak in the sucrose gradient. In contrast, CsCl gradient separation revealed that in addit…

0301 basic medicineEchovirusPicornavirusvirusesImmunologyPopulationmedicine.disease_causeMicrobiology03 medical and health sciencesVirologymedicineEnterovirus InfectionsHumansgenome deliveryeducationInfectivityeducation.field_of_studybiologyVirionRNAbiology.organism_classificationVirologyEnterovirus B HumanVirus-Cell Interactionsenterovirukset030104 developmental biologyCapsidInsect Scienceintermediate particlesBiophysicsParticleRNA ViralCapsid ProteinsEchovirus 1Binding domainJournal of virology
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Diverse relations between ABC transporters and lipids: An overview.

2016

It was first discovered in 1992 that P-glycoprotein (Pgp, ABCB1), an ATP binding cassette (ABC) transporter, can transport phospholipids such as phosphatidylcholine, -ethanolamine and -serine as well as glucosylceramide and glycosphingolipids. Subsequently, many other ABC transporters were identified to act as lipid transporters. For substrate transport by ABC transporters, typically a classic, alternating access model with an ATP-dependent conformational switch between a high and a low affinity substrate binding site is evoked. Transport of small hydrophilic substrates can easily be imagined this way, as the molecule can in principle enter and exit the transporter in the same orientation. …

0301 basic medicineModels MolecularATP Binding Cassette Transporter Subfamily BBiophysicsGene ExpressionATP-binding cassette transporterPhosphatidylserinesBiologyBiochemistrySubstrate SpecificitySerine03 medical and health sciencesLipid translocationHumansProtein IsoformsBinding siteLipid bilayerLipid TransportATP-binding domain of ABC transportersBinding SitesPhosphatidylethanolaminesFatty AcidsTransporterBiological TransportCell BiologyCell biology030104 developmental biologyBiochemistryPhosphatidylcholineslipids (amino acids peptides and proteins)Protein BindingBiochimica et biophysica acta. Biomembranes
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The malate sensing two-component system MaeKR is a non-canonical class of sensory complex for C4-dicarboxylates

2017

16 páginas, 7 figuras, 2 tablas

0301 basic medicineModels MolecularAdenosine Triphosphate / metabolismProtein ConformationScienceMalatesBacterial proteins/chemistry/metabolism/geneticsPlasma protein bindingBiologyModels BiologicalArticleConserved sequence03 medical and health sciencesAdenosine TriphosphateBacterial ProteinsAdenosine Triphosphate / chemistryDicarboxylic AcidsProtein Interaction Domains and MotifsAmino Acid SequenceKinase activityPhosphorylationLactobacilus cassei/classification/physiologyMalates/metabolismPromoter Regions GeneticConserved SequencePhylogenyMultidisciplinaryQAutophosphorylationfungiRTwo-component regulatory systemResponse regulatorLacticaseibacillus casei030104 developmental biologyBiochemistryMedicineModelsbiologica/moleculPhosphorylationCconserved secuenceProtein MultimerizationBinding domainProtein BindingScientific Reports
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