| 1991 |
Nup54 (p54) forms a stable complex with p62 and p58 (Nup62 and Nup58) that is essential for nuclear pore function; depletion of this complex from nuclear reconstitution extracts abolishes nuclear transport, with a strict linear correlation between complex abundance and transport capacity. |
Co-immunoprecipitation, nuclear reconstitution depletion assay, gel filtration, nuclear transport assay |
The Journal of cell biology |
High |
2050741
|
| 1994 |
The p62–p58–p54 complex (Nup62/Nup58/Nup54) is released from the NPC as a discrete high-molecular-weight complex; p54 and p58 are not galactosylated in vitro, localizing this complex to the central channel region. |
Co-immunoprecipitation, detergent/high-salt extraction, in vitro galactosylation assay, immunogold electron microscopy |
The Journal of cell biology |
High |
8045926
|
| 2001 |
The Nup62 complex (containing Nup54) in the central channel of the NPC provides a progressively higher-affinity binding site for importin-β cargo complexes relative to cytoplasmic Nup358, supporting a directional gradient model for nuclear import. |
Quantitative solid-phase binding assay, antibody inhibition of nuclear import |
The Journal of cell biology |
Medium |
11266456
|
| 2007 |
In Drosophila, RNAi knockdown of the Nup54 fly homologue (but not most other FG nucleoporins) selectively impairs importin-α/β-mediated nuclear import without affecting CRM1-dependent export, demonstrating a selective role for Nup54 in the import pathway. |
RNA interference in Drosophila S2 cells, nuclear import/export assays |
The Journal of cell biology |
High |
17682050
|
| 2014 |
The Nup62 complex (Nup62:Nup54:Nup58) exists in solution at a 1:1:1 stoichiometry, with Nup54 central and directly binding both Nup62 and Nup58 via conserved coiled-coil segments; at high concentrations the complex forms larger assemblies while maintaining this ratio. The same stoichiometry is conserved in the yeast Nsp1 complex. |
Gel filtration, analytical ultracentrifugation, in vitro reconstitution |
Molecular biology of the cell |
High |
24574455
|
| 2015 |
The structured domain of Nup58 and the disordered FG domain of Nup54 are allosterically coupled: multivalent binding of importin-β Kapβ1 to the disordered domains of Nup58 stabilizes a neighboring structured domain associated with Nup54, shifting equilibria from homo-oligomers to hetero-oligomers, providing a quantitative framework for central channel constriction and dilation as a function of transport factor occupancy. |
Analysis of multiple equilibria (quantitative binding), crystallography, mutagenesis |
Cell |
High |
26046439
|
| 2015 |
The ordered regions of Nup62, Nup54, and Nup58 form a dynamic triple complex in solution built from two sub-interactomes: a Nup54·Nup58 interaction and a Nup54·Nup62 triple helix ('finger'); crystal structure-deduced copy numbers suggest a 4:2:1 (Nup62:Nup54:Nup58) stoichiometry supporting a ring-cycle model for NPC channel dilation and constriction. |
Size-exclusion chromatography, analytical ultracentrifugation, X-ray crystallography |
The Journal of biological chemistry |
High |
26025361
|
| 2017 |
The FG domain of human Nup54 forms labile cross-β polymers detectable by chemical footprinting; mutations within the footprinted region block both polymerization and binding by the toxic PRn poly-dipeptide encoded by the C9orf72 repeat expansion, and 1,6-hexanediol melts these polymers in vitro, reversing PRn-mediated enhancement of nuclear pore permeability. |
Chemical footprinting, site-directed mutagenesis, in vitro polymerization assay, 1,6-hexanediol treatment |
Proceedings of the National Academy of Sciences of the United States of America |
High |
28069952
|
| 2017 |
In C. elegans, the Nup54 orthologue NPP-4 (along with NPP-1/Nup58 and NPP-11/Nup62) recruits PLK-1 to the nuclear pore complex via physical interaction with PLK-1's Polo-box domain, primed by Cdk1 and PLK-1 phosphorylation at multiple Polo-docking sites; this NPC-based recruitment is required for efficient nuclear envelope breakdown. |
Co-immunoprecipitation, genetic rescue, live-cell imaging, RNAi knockdown, phosphorylation site mapping |
Developmental cell |
High |
29065307
|
| 2017 |
Overexpression of NUP54 (along with NUP62) rescues the nuclear import defect of a TDP-43 NLS reporter caused by cytoplasmic poly-GA aggregates in C9orf72 ALS/FTLD, indicating that Nup54 functions in the importin-α/β-dependent nuclear import pathway. |
Fluorescence reporter rescue assay, overexpression in cell culture |
Human molecular genetics |
Medium |
28040728
|
| 2017 |
The crystal structure of the Nup62 coiled-coil fragment reveals a parallel three-helix bundle that can form both homodimers/homotrimers and heterotrimers with Nup54 coiled-coil domain; comparative structural analysis demonstrates plasticity of the Nup62 coiled-coil enabling chain replacement to form diverse NPC assemblies. |
X-ray crystallography (2.4 Å), SEC-MALS, glutaraldehyde crosslinking |
Biochemistry |
High |
28406021
|
| 2018 |
Nup54 (with its partners Nup62 and Nup58) is required for homologous recombination (HR) repair of DNA double-strand breaks: Nup54 depletion epistasizes with Rad51 deficiency, decreases HR reporter activity, reduces HR-linked DNA synthesis foci and sister chromatid exchanges after ionizing radiation, and causes mitotic catastrophe and G2 arrest specifically in cells with replicated DNA. |
siRNA knockdown, HR reporter assay, epistasis analysis with Rad51, FACS cell-cycle analysis, chromosome aberration scoring |
Nucleic acids research |
High |
29986057
|
| 2020 |
In vivo FRET-based sensors show that the inner-ring nucleoporins Nup54, Nup58, and Nup62 undergo conformational changes when nucleocytoplasmic transport is perturbed, while Nups elsewhere in the NPC do not, indicating that the central channel undergoes dynamic conformational remodeling coupled to transport activity. |
Live-cell FRET imaging with rigidly conjugated mEGFP sensors, transport perturbation |
eLife |
Medium |
33346731
|
| 2021 |
In Drosophila ovarian follicle cells, Nup54 and Nup58 are specifically required for piRNA biogenesis from the flamenco locus; loss of Nup54 or Nup58 compromises flamenco-dependent piRNA production without broadly disrupting nuclear transport, demonstrating a tissue-specific and locus-specific role for these channel nucleoporins in the piRNA pathway. |
RNAi knockdown in Drosophila ovaries, small RNA sequencing, genetic analysis |
eLife |
High |
33856346
|
| 2021 |
Nup54 promotes CARM1 nuclear import in gastric cancer cells; once in the nucleus, CARM1 cooperates with TFEB to activate Notch2 transcription via H3R17me2 at the Notch2 promoter, and methylates N2ICD at R1786, R1838, and R2047, enhancing MAML1 binding and driving cell proliferation and tumor formation. |
Co-immunoprecipitation, nuclear fractionation, overexpression/knockdown, methylation assays, reporter assays, in vivo tumor xenograft |
Oncogene |
Medium |
34725461
|
| 2021 |
In Drosophila, Nup54 is required for correct wiring of eight adult brain neurons expressing pickpocket that mediate egg-laying, and viable Nup54 mutants prevent the sex-peptide-induced post-mating response including egg-laying and reduced receptivity; the Nup54 promoter is a hotspot for rapid evolution and promoter variants alter nucleo-cytoplasmic shuttling. |
Genetic mutagenesis screen, behavioral assays, neuroanatomical analysis, promoter reporter assay |
BMC biology |
Medium |
34666772
|
| 2022 |
Biallelic pathogenic variants in NUP54 clustered in the C-terminal region that interacts with NUP62 cause early-onset dystonia with striatal lesions; in silico and protein-biochemical studies confirmed these variants disrupt the NUP54–NUP62 interaction, establishing NUP54 as a disease gene for a neurodegenerative movement disorder. |
Patient sequencing, in silico structural modeling, protein-biochemical interaction studies |
Annals of neurology |
Medium |
36333996
|
| 2022 |
TIP60-mediated acetylation of Nup62 at Lys432 dissolves the Nup62–Nup58–Nup54 complex during mitotic entry, promoting Nup62 redistribution to the mitotic spindle for correct spindle orientation and chromosome segregation. |
Mass spectrometry, co-immunoprecipitation, acetylation site mutagenesis, live-cell imaging, siRNA knockdown |
Journal of molecular cell biology |
Medium |
36190325
|
| 2024 |
In C. elegans, the Nup54 orthologue NPP-1 promotes perinuclear localization of the anti-silencing Argonaute CSR-1, placing Nup54 in the nuclear pore machinery required for piRNA-mediated gene silencing initiation. |
Sensitized piRNA reporter screen, fluorescence localization assay, RNAi knockdown in C. elegans |
Genetics |
Medium |
37210214
|