nuclear pore outer ring / telomere tethering at nuclear periphery / nuclear pore complex assembly / nuclear pore organization / nuclear pore cytoplasmic filaments / post-transcriptional tethering of RNA polymerase II gene DNA at nuclear periphery / Nuclear Pore Complex (NPC) Disassembly / nuclear inclusion body / nuclear pore nuclear basket / Transport of Ribonucleoproteins into the Host Nucleus ...nuclear pore outer ring / telomere tethering at nuclear periphery / nuclear pore complex assembly / nuclear pore organization / nuclear pore cytoplasmic filaments / post-transcriptional tethering of RNA polymerase II gene DNA at nuclear periphery / Nuclear Pore Complex (NPC) Disassembly / nuclear inclusion body / nuclear pore nuclear basket / Transport of Ribonucleoproteins into the Host Nucleus / Regulation of Glucokinase by Glucokinase Regulatory Protein / Defective TPR may confer susceptibility towards thyroid papillary carcinoma (TPC) / Transport of the SLBP independent Mature mRNA / Transport of the SLBP Dependant Mature mRNA / NS1 Mediated Effects on Host Pathways / SUMOylation of SUMOylation proteins / Transport of Mature mRNA Derived from an Intronless Transcript / Rev-mediated nuclear export of HIV RNA / structural constituent of nuclear pore / SUMOylation of RNA binding proteins / Nuclear import of Rev protein / NEP/NS2 Interacts with the Cellular Export Machinery / Transport of Mature mRNA derived from an Intron-Containing Transcript / tRNA processing in the nucleus / RNA export from nucleus / Postmitotic nuclear pore complex (NPC) reformation / nucleocytoplasmic transport / positive regulation of mRNA splicing, via spliceosome / Viral Messenger RNA Synthesis / nuclear localization sequence binding / SUMOylation of ubiquitinylation proteins / Vpr-mediated nuclear import of PICs / SUMOylation of DNA replication proteins / Hydrolases; Acting on peptide bonds (peptidases); Serine endopeptidases / Regulation of HSF1-mediated heat shock response / mRNA transport / Amplification of signal from unattached kinetochores via a MAD2 inhibitory signal / SUMOylation of DNA damage response and repair proteins / nuclear pore / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Resolution of Sister Chromatid Cohesion / serine-type peptidase activity / SUMOylation of chromatin organization proteins / nuclear periphery / molecular condensate scaffold activity / HCMV Late Events / promoter-specific chromatin binding / RHO GTPases Activate Formins / Transcriptional regulation by small RNAs / ISG15 antiviral mechanism / HCMV Early Events / protein import into nucleus / Separation of Sister Chromatids / nuclear envelope / snRNP Assembly / nuclear membrane / transcription coactivator activity / nuclear body / ribonucleoprotein complex / mRNA binding / SARS-CoV-2 activates/modulates innate and adaptive immune responses / proteolysis / RNA binding / nucleoplasm / cytosol Similarity search - Function
Journal: Nat Commun / Year: 2024 Title: Impact of distinct FG nucleoporin repeats on Nup98 self-association. Authors: Alain Ibáñez de Opakua / Christian F Pantoja / Maria-Sol Cima-Omori / Christian Dienemann / Markus Zweckstetter / Abstract: Nucleoporins rich in phenylalanine/glycine (FG) residues form the permeability barrier within the nuclear pore complex and are implicated in several pathological cellular processes, including ...Nucleoporins rich in phenylalanine/glycine (FG) residues form the permeability barrier within the nuclear pore complex and are implicated in several pathological cellular processes, including oncogenic fusion condensates. The self-association of FG-repeat proteins and interactions between FG-repeats play a critical role in these activities by forming hydrogel-like structures. Here we show that mutation of specific FG repeats of Nup98 can strongly decrease the protein's self-association capabilities. We further present a cryo-electron microscopy structure of a Nup98 peptide fibril with higher stability per residue compared with previous Nup98 fibril structures. The high-resolution structure reveals zipper-like hydrophobic patches which contain a GLFG motif and are less compatible for binding to nuclear transport receptors. The identified distinct molecular properties of different regions of the nucleoporin may contribute to spatial variations in the self-association of FG-repeats, potentially influencing transport processes through the nuclear pore.
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