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RESEARCH PRODUCT
Probing Differential Binding Mechanisms of Phenylalanine-Glycine-Rich Nucleoporins by Single-Molecule FRET
Edward A. LemkePiau Siong Tansubject
0301 basic medicineModels MolecularGlycosylationProtein ConformationPhenylalanineGlycineIntrinsically disordered proteinsArticle03 medical and health scienceschemistry.chemical_compoundFluorescence Resonance Energy TransferAnimalsHumansNuclear porechemistry.chemical_classificationBiomoleculeSingle-molecule FRETEquipment DesignIntrinsically Disordered ProteinsNuclear Pore Complex Proteins030104 developmental biologychemistryNucleocytoplasmic TransportBiophysicsNucleoporinNuclear transportProtein Bindingdescription
Abstract Phenylalanine-glycine-rich nucleoporins (FG-Nups) are intrinsically disordered proteins, constituting the selective barrier of the nuclear pore complex. They are highly dynamic under physiological conditions and studying their interaction with nuclear transport receptors (NTRs) is key to understanding the molecular mechanism of nucleocytoplasmic transport. Distinct conformational features of FG-Nups interacting with diverse NTRs can be detected by multiparameter single-molecule fluorescence energy transfer (smFRET), which is a powerful technique for studying the dynamics and interactions of biomolecules in solution. Here we provide a detailed protocol utilizing smFRET to reveal differential binding mechanisms of FG-Nups to NTRs, with a focus on practical considerations on sample preparation of unglycosylated and glycosylated FG-Nups, site-specific dual-labeling, smFRET measurements, and data analysis.
year | journal | country | edition | language |
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2018-11-26 | Intrinsically Disordered Proteins |