GO:0051292 nuclear pore complex assembly: Components, Assembly and Research Methods, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0051292 nuclear pore complex assembly describes the aggregation, arrangement and bonding of components to form a nuclear pore complex (NPC).
• NPC assembly occurs through at least two distinct pathways: post-mitotic assembly and interphase de novo assembly.
• Nucleoporin condensation and phase separation are coordinated with NPC assembly to ensure proper pore formation.
• The small GTPase Ran defines NPC asymmetry and regulates nucleoporin interactions during assembly.
• Comprehensive maturation of NPCs regulates zygotic genome activation, linking NPC assembly to developmental gene expression.
• Dysregulation of NPC assembly is implicated in cancer, neurodegeneration, and lipid metabolism disorders.
Description
The nuclear pore complex (NPC) is a massive molecular machine that mediates nucleocytoplasmic transport and serves as a signaling hub. The process by which this complex is built, termed nuclear pore complex assembly (GO:0051292), is essential for cell division, development, and homeostasis. Understanding NPC assembly is critical because defects in this process lead to a wide range of human diseases, including cancer and neurodegenerative disorders. Recent advances have revealed that NPC assembly involves coordinated steps of nucleoporin condensation, membrane remodeling, and quality control. This article provides a comprehensive overview of the genes, mechanisms, and research methods used to study NPC assembly, with a focus on how CRISPR-based models can accelerate discovery.
nuclear pore complex assembly At A Glance
| GO ID | GO:0051292 |
|---|---|
| GO term | nuclear pore complex assembly |
| Ontology | biological_process |
| Synonym | NPC assembly, nuclear pore assembly, nuclear pore biogenesis, nuclear pore biosynthesis, nuclear pore complex biogenesis, nuclear pore complex biosynthesis, nuclear pore complex formation, nuclear pore formation |
| Major function | Formation of the nuclear pore complex, a channel for nucleocytoplasmic transport |
| Related cellular component | Nuclear pore complex (NPC) |
| Related molecular function | Structural constituent of nuclear pore, protein binding |
| Pathways | Post-mitotic assembly, interphase de novo assembly |
What Is GO:0051292?
Nuclear pore complex assembly (GO:0051292) is the biological process in which a set of protein and membrane components aggregate, arrange, and bond together to form a functional nuclear pore complex. This process encompasses the recruitment of nucleoporins, the formation of subcomplexes, and the insertion of the pore into the nuclear envelope.
Why Is nuclear pore complex assembly Important in Cell Biology?
Nuclear pore complex assembly is fundamental to eukaryotic cell biology because the NPC is the sole gateway for macromolecular exchange between the nucleus and cytoplasm. Proper assembly ensures accurate gene expression, cell cycle progression, and developmental transitions such as zygotic genome activation. Moreover, emerging evidence links NPC assembly defects to human diseases, including cancer, neurodegeneration, and metabolic disorders.
• Essential for nucleocytoplasmic transport and cell viability.
• Regulates zygotic genome activation during development.
• Involved in the maintenance of nuclear envelope integrity.
• Dysregulation leads to cancer and metastasis.
• Implicated in neurodegenerative diseases such as amyotrophic lateral sclerosis.
• Linked to lipid metabolism and hepatic neutral lipid flux.
• Ran GTPase defines NPC asymmetry and assembly directionality.
• Nucleoporin condensation is a key regulatory step.
• Two distinct assembly pathways ensure NPC formation in different cell cycle phases.
• Target for antiviral and anticancer therapies.
What Happens During nuclear pore complex assembly?
Initiation and Nucleoporin Condensation
In simple terms: The first step is when nucleoporins gather together to form a dense seed.
NPC assembly begins with the condensation of nucleoporins, particularly those containing phenylalanine-glycine (FG) repeats, into a dense phase. This process is driven by liquid-liquid phase separation and is coordinated with the cell cycle. The Ran GTPase gradient contributes to the spatial regulation of this condensation, ensuring that assembly occurs at the nuclear envelope.
Membrane Remodeling and Pore Formation
In simple terms: The nuclear envelope must bend and fuse to create a hole for the pore.
After nucleoporin condensation, the nuclear envelope undergoes remodeling to allow insertion of the NPC. This involves the action of reticulons, DP1, and other membrane-shaping proteins, as well as the fusion of inner and outer nuclear membranes. The process is tightly regulated to prevent nuclear envelope rupture.
Post-Mitotic Assembly
In simple terms: After cell division, NPCs are quickly reassembled from disassembled components.
During mitosis, the nuclear envelope breaks down and NPCs disassemble. Post-mitotic assembly occurs when nucleoporins are recruited to chromatin and the reforming nuclear envelope. This pathway is rapid and relies on the existing pool of nucleoporins.
Interphase De Novo Assembly
In simple terms: New pores can also form in the intact nuclear envelope during interphase.
In interphase, new NPCs assemble de novo into an intact nuclear envelope. This process requires the coordinated action of nucleoporins, membrane proteins, and the Ran GTPase. It is slower than post-mitotic assembly and is critical for cell growth and differentiation.
Maturation and Quality Control
In simple terms: The pore is checked for completeness and functionality before it becomes fully active.
After the initial structure is formed, the NPC undergoes maturation, which includes the addition of peripheral nucleoporins and nuclear transport receptors. Comprehensive maturation of NPCs regulates zygotic genome activation, ensuring that the pore is fully functional before the onset of zygotic transcription. Quality control mechanisms remove defective assembly intermediates.
Key Genes Involved in GO:0051292 nuclear pore complex assembly
The following genes and proteins are central to nuclear pore complex assembly, as identified in recent literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| NUP107 | Scaffold nucleoporin, part of NUP107-160 complex | Essential for post-mitotic assembly |
| NUP153 | Nuclear basket nucleoporin | Regulates NPC asymmetry and assembly |
| NUP98 | FG-repeat nucleoporin | Involved in phase separation and condensation |
| NUP214 | Cytoplasmic filament nucleoporin | Implicated in leukemia |
| RAN | Small GTPase | Defines NPC asymmetry and assembly directionality |
| RANBP2 | Ran binding protein 2 | Regulates NPC assembly and disassembly |
| CLCC1 | Chloride channel CLIC-like 1 | Promotes NPC assembly and lipid flux |
| ELYS | AT-hook containing transcription factor | Initiates post-mitotic NPC assembly |
| NUP133 | Scaffold nucleoporin | Part of NUP107-160 complex |
| NUP160 | Scaffold nucleoporin | Required for NPC assembly |
| NUP85 | Scaffold nucleoporin | Component of NUP107-160 complex |
| NUP43 | Scaffold nucleoporin | Component of NUP107-160 complex |
| SEH1L | Scaffold nucleoporin | Component of NUP107-160 complex |
| SEC13 | Scaffold nucleoporin | Component of NUP107-160 complex |
| NUP155 | Inner ring nucleoporin | Critical for NPC assembly |
| NUP205 | Inner ring nucleoporin | Critical for NPC assembly |
| NUP188 | Inner ring nucleoporin | Critical for NPC assembly |
| NUP93 | Inner ring nucleoporin | Critical for NPC assembly |
How Is nuclear pore complex assembly Regulated?
NPC assembly is regulated by the Ran GTPase gradient, which controls the spatial and temporal recruitment of nucleoporins. Additionally, nucleoporin condensation is regulated by post-translational modifications such as phosphorylation, which can alter phase separation properties. The process is also coordinated with the cell cycle through cyclin-dependent kinases. Comprehensive maturation of NPCs is linked to zygotic genome activation, suggesting developmental regulation.
nuclear pore complex assembly and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| NUP214 | Leukemia | Knockout in hematopoietic stem cells |
| CLCC1 | Lipid metabolism disorder | Liver-specific knockout mouse |
| NUP98 | Acute myeloid leukemia | Knock-in of fusion oncogene |
| RAN | Cancer, neurodegeneration | Point mutation knock-in |
| ELYS | Developmental defects | Zebrafish knockout |
Cancer
Alterations in nucleoporins and NPC assembly components are frequently observed in cancers. For example, NUP214 mutations are associated with leukemia, and dysregulation of NPC assembly can lead to chromosomal instability and tumorigenesis.
Neurodegeneration
Defects in NPC assembly and nucleoporin function have been linked to neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS) and Alzheimer's disease. Disruption of nucleocytoplasmic transport is a common pathological feature.
Metabolic Disorders
CLCC1, a protein involved in NPC assembly, promotes hepatic neutral lipid flux. Mutations in CLCC1 are associated with lipid metabolism disorders, highlighting the role of NPC assembly in metabolic homeostasis.
From nuclear pore complex assembly-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| What is the role of NUP153 in NPC assembly? | Knockout cell line (e.g., HeLa) |
| How does CLCC1 mutation affect lipid flux? | Liver-specific knockout mouse |
| Does Ran GTPase asymmetry regulate NPC assembly? | Point mutation knock-in of Ran |
| What is the dynamics of NPC assembly in live cells? | Tagged knock-in of NUP107 with GFP |
| Can overexpression of NUP98 drive oncogenesis? | Overexpression cell model |
| What is the effect of ELYS depletion on zygotic genome activation? | Zebrafish knockout |
How to Study the nuclear pore complex assembly Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Live-cell imaging | Dynamics of NPC assembly | Visualizing nucleoporin recruitment |
| Proteomics | Protein-protein interactions | Identifying assembly intermediates |
| CRISPR screen | Genes required for NPC assembly | Discovery of novel factors |
| Cryo-ET | 3D structure of NPC | Understanding assembly architecture |
| RNA-seq | Transcriptional changes | Assessing zygotic genome activation |
| FRAP | Protein turnover at NPC | Measuring assembly kinetics |
| Super-resolution microscopy | Nanoscale organization of NPC | Visualizing subcomplexes |
Live-Cell Imaging
Live-cell imaging using fluorescently tagged nucleoporins allows real-time visualization of NPC assembly dynamics. This method can reveal the order of nucleoporin recruitment and the kinetics of pore formation.
Proteomics
Affinity purification coupled with mass spectrometry can identify interaction partners of nucleoporins during assembly. This approach helps define the assembly intermediates and regulatory factors.
RNA Interference and CRISPR Screens
High-throughput RNAi or CRISPR screens can systematically identify genes required for NPC assembly. Such screens have uncovered novel factors like CLCC1.
Structural Biology
Cryo-electron tomography and X-ray crystallography provide high-resolution structures of NPC subcomplexes, revealing the molecular architecture of the assembling pore.
How CRISPR Can Be Used to Study GO:0051292 nuclear pore complex assembly
Knockout
CRISPR knockout of nucleoporin genes (e.g., NUP107, NUP153) can abolish NPC assembly, leading to cell cycle arrest or death. These models are useful for studying the essentiality of individual components.
Point Mutation
Point mutations in genes such as RAN can disrupt GTPase activity and NPC asymmetry without completely abolishing protein expression. This allows fine-tuning of assembly defects.
Knock-in
Knock-in of fluorescent tags (e.g., GFP) into endogenous nucleoporin loci enables live-cell imaging of NPC assembly at endogenous expression levels.
Overexpression
Overexpression of nucleoporins like NUP98 can drive oncogenesis and disrupt normal NPC assembly, providing models for cancer research.
How EDITGENE Supports nuclear pore complex assembly Research
Researchers studying nuclear pore complex assembly-related genes often need to determine whether a candidate gene is causally involved in the assembly process or is merely correlated. CRISPR-based models provide a robust way to establish causality by precisely manipulating the genome.
Contact EDITGENE today to design your custom CRISPR model for nuclear pore complex assembly research.
Related Products
| Product name | Cat.No. | Species | Gene ID | |
|---|---|---|---|---|
| FXR1 Knockout HEK293 Cell Line | EDJ-KQ2559 | Human | 8087 | Details Get a Quote |
| TMEM170A Knockout HEK293 Cell Line | EDJ-KQ8569 | Human | 124491 | Details Get a Quote |
| RTN4 Knockout HEK293 Cell Line | EDJ-KQ11871 | Human | 57142 | Details Get a Quote |
| NDC1 Knockout HEK293 Cell Line | EDJ-KQ14399 | Human | 55706 | Details Get a Quote |
| FXR1 Knockout A-549 Cell Line | EDJ-KQ23216 | Human | 8087 | Details Get a Quote |
| NDC1 Knockout HCT 116 Cell Line | EDJ-KQ44577 | Human | 55706 | Details Get a Quote |
| NDC1 Knockout HeLa Cell Line | EDJ-KQ44578 | Human | 55706 | Details Get a Quote |
| FXR1 Knockout HCT 116 Cell Line | EDJ-KQ23217 | Human | 8087 | Details Get a Quote |
| FXR1 Knockout HeLa Cell Line | EDJ-KQ23218 | Human | 8087 | Details Get a Quote |
| TMEM170A Knockout A-549 Cell Line | EDJ-KQ34725 | Human | 124491 | Details Get a Quote |
| TMEM170A Knockout HCT 116 Cell Line | EDJ-KQ34726 | Human | 124491 | Details Get a Quote |
| TMEM170A Knockout HeLa Cell Line | EDJ-KQ34727 | Human | 124491 | Details Get a Quote |
| RTN4 Knockout A-549 Cell Line | EDJ-KQ40301 | Human | 57142 | Details Get a Quote |
| RTN4 Knockout HCT 116 Cell Line | EDJ-KQ40302 | Human | 57142 | Details Get a Quote |
| RTN4 Knockout HeLa Cell Line | EDJ-KQ40303 | Human | 57142 | Details Get a Quote |
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Frequently Asked Questions About nuclear pore complex assembly
What is nuclear pore complex assembly?
Nuclear pore complex assembly (GO:0051292) is the biological process of building the nuclear pore complex from its component proteins and membranes.
What genes are involved in nuclear pore complex assembly?
Key genes include NUP107, NUP153, NUP98, RAN, RANBP2, CLCC1, and ELYS, among others.
What are the two pathways of nuclear pore complex assembly?
Post-mitotic assembly and interphase de novo assembly.
How is nuclear pore complex assembly regulated?
It is regulated by the Ran GTPase gradient, phosphorylation, and cell cycle cues.
What diseases are linked to nuclear pore complex assembly defects?
Cancer, neurodegeneration, and metabolic disorders.
What methods are used to study nuclear pore complex assembly?
Live-cell imaging, proteomics, CRISPR screens, and structural biology.
What is the role of Ran in nuclear pore complex assembly?
Ran defines NPC asymmetry and regulates nucleoporin recruitment.
How does CLCC1 affect nuclear pore complex assembly?
CLCC1 promotes NPC assembly and hepatic neutral lipid flux.
What is the significance of nucleoporin condensation?
It is a key step in NPC assembly, driven by phase separation.
How can CRISPR be used to study nuclear pore complex assembly?
CRISPR knockout, point mutation, knock-in, and overexpression models allow precise manipulation of nucleoporin genes.
Conclusion
Nuclear pore complex assembly (GO:0051292) is a fundamental cellular process that ensures the formation of the sole channel for nucleocytoplasmic transport. Recent research has elucidated the molecular mechanisms, including nucleoporin condensation, membrane remodeling, and regulation by Ran GTPase. Dysregulation of this process is linked to cancer, neurodegeneration, and metabolic diseases. CRISPR-based models are invaluable for dissecting the genetic basis of NPC assembly and for developing therapeutic strategies.
References
- 1. Penzo A et al.. 2023. Puzzling out nuclear pore complex assembly.. FEBS Lett 597(22):2705-2727 PMID: 37548888
- 2. Hampoelz B et al.. 2019. Structure and Assembly of the Nuclear Pore Complex.. Annu Rev Biophys 48:515-536 PMID: 30943044
- 3. Kuiper EFE et al.. 2023. Coordinating nucleoporin condensation and nuclear pore complex assembly.. FEBS Lett 597(20):2534-2545 PMID: 37620293
- 4. Petrovic S et al.. 2026. Structure, function and assembly of nuclear pore complexes.. Nat Rev Mol Cell Biol 27(1):35-54 PMID: 40926106
- 5. Mathiowetz AJ et al.. 2026. CLCC1 promotes hepatic neutral lipid flux and nuclear pore complex assembly.. Nature 652(8109):462-470 PMID: 41741636
- 6. Sachweh J et al.. 2025. The small GTPase Ran defines nuclear pore complex asymmetry.. Cell 188(21):5931-5946.e16 PMID: 40829587
- 7. Otsuka S et al.. 2018. Mechanisms of nuclear pore complex assembly - two different ways of building one molecular machine.. FEBS Lett 592(4):475-488 PMID: 29119545
- 8. Shen W et al.. 2022. Comprehensive maturity of nuclear pore complexes regulates zygotic genome activation.. Cell 185(26):4954-4970.e20 PMID: 36493774
