Subtopic Deep Dive

Nuclear Pore Complex Structure
Research Guide

What is Nuclear Pore Complex Structure?

The nuclear pore complex (NPC) is an 8-fold symmetric protein assembly spanning the nuclear envelope that mediates selective nucleocytoplasmic transport.

Cryo-EM studies resolve NPC scaffold and FG-nucleoporin organization at Angstrom resolution. Super-resolution microscopy captures in-cell NPC architecture and turnover dynamics. Over 10 key papers from 2006-2021, with 200+ citations each, detail structure and gating.

Curated Papers

Key Challenges

Why It Matters

Atomic NPC structures from Schuller et al. (2021) and Allegretti et al. (2020) reveal cellular environment effects on architecture, aiding nuclear envelope disorder therapies. Eibauer et al. (2015) gating mechanisms inform selective transport models for drug delivery across nuclear barriers. Hetzer (2010) nuclear envelope insights link NPC to chromatin regulation in diseases like laminopathies (Dittmer and Misteli, 2011).

Key Research Challenges

In-cell NPC heterogeneity

NPC architecture varies by cellular context, complicating uniform structural models. Schuller et al. (2021) show environmental shaping of NPC, requiring context-specific imaging. Cryo-EM struggles with native heterogeneity versus purified assemblies.

FG-nucleoporin dynamics

Modeling flexible FG-repeat domains challenges static structure determination. Eibauer et al. (2015) describe gating via FG phases, but dynamics evade high-resolution capture. Phase separation (Yoshizawa et al., 2020) adds biophysical complexity.

Assembly and turnover

Post-mitotic NPC reassembly involves BAF-1/VRK-1 (Gorjánácz et al., 2006), but real-time snapshots are limited. Allegretti et al. (2020) provide turnover views, yet full pathways remain unresolved. In-cell imaging limits resolution.

Essential Papers

The lamin protein family

Travis A. Dittmer, Tom Misteli · 2011 · Genome Biology · 479 citations

The Nuclear Envelope

Martin W. Hetzer · 2010 · Cold Spring Harbor Perspectives in Biology · 314 citations

The nuclear envelope (NE) is a highly regulated membrane barrier that separates the nucleus from the cytoplasm in eukaryotic cells. It contains a large number of different proteins that have been i...

Human PCNA Structure, Function and Interactions

Amaia González‐Magaña, Francisco J. Blanco · 2020 · Biomolecules · 275 citations

Proliferating cell nuclear antigen (PCNA) is an essential factor in DNA replication and repair. It forms a homotrimeric ring that embraces the DNA and slides along it, anchoring DNA polymerases and...

Components and regulation of nuclear transport processes

Bastien Cautain, Richard Hill, Nuria de Pedro et al. · 2014 · FEBS Journal · 269 citations

The spatial separation of DNA replication and gene transcription in the nucleus and protein translation in the cytoplasm is a uniform principle of eukaryotic cells. This compartmentalization impose...

The Driving Force: Nuclear Mechanotransduction in Cellular Function, Fate, and Disease

Melanie Maurer, Jan Lammerding · 2019 · Annual Review of Biomedical Engineering · 254 citations

Cellular behavior is continuously affected by microenvironmental forces through the process of mechanotransduction, in which mechanical stimuli are rapidly converted to biochemical responses. Mount...

The cellular environment shapes the nuclear pore complex architecture

Anthony P. Schuller, Matthias Wojtynek, David Mankus et al. · 2021 · Nature · 249 citations

Caenorhabditis elegans BAF‐1 and its kinase VRK‐1 participate directly in post‐mitotic nuclear envelope assembly

Mátyás Gorjánácz, Elke P.F. Klerkx, Vincent Galy et al. · 2006 · The EMBO Journal · 238 citations

Reading Guide

Foundational Papers

Hetzer (2010, 314 cites) for nuclear envelope context; Eibauer et al. (2015, 192 cites) for core structure/gating; Cautain et al. (2014, 269 cites) for transport components.

Recent Advances

Schuller et al. (2021, 249 cites) for environmental architecture; Allegretti et al. (2020, 202 cites) for in-cell turnover; Yoshizawa et al. (2020) for FG phase separation.

Core Methods

Cryo-EM for scaffold (Eibauer 2015, Allegretti 2020); super-resolution microscopy for native states (Schuller 2021); biophysics for FG dynamics (Yoshizawa 2020).

How PapersFlow Helps You Research Nuclear Pore Complex Structure

Discover & Search

Research Agent uses citationGraph on Schuller et al. (2021, Nature, 249 citations) to map NPC architecture citations, revealing clusters around cryo-EM methods. exaSearch queries 'nuclear pore complex in-cell cryo-EM' for 250M+ OpenAlex papers, while findSimilarPapers expands from Eibauer et al. (2015) to gating studies.

Analyze & Verify

Analysis Agent applies readPaperContent to Allegretti et al. (2020) for in-cell snapshots, then verifyResponse (CoVe) cross-checks structure claims against Hetzer (2010). runPythonAnalysis processes cryo-EM resolution data with NumPy for statistical verification; GRADE grading scores evidence on FG dynamics from Eibauer et al. (2015).

Synthesize & Write

Synthesis Agent detects gaps in NPC heterogeneity post-Schuller et al. (2021), flags contradictions in assembly models (Gorjánácz et al., 2006). Writing Agent uses latexEditText for structural diagrams, latexSyncCitations for 10+ papers, latexCompile for reports; exportMermaid visualizes 8-fold symmetry and gating.

Use Cases

"Analyze cryo-EM resolutions across NPC structure papers"

Research Agent → searchPapers('NPC cryo-EM resolution') → Analysis Agent → runPythonAnalysis (pandas aggregation of resolutions from Schuller 2021, Allegretti 2020, Eibauer 2015) → matplotlib plot of Angstrom improvements.

"Write LaTeX review on NPC gating mechanisms"

Synthesis Agent → gap detection (Eibauer 2015 vs recent) → Writing Agent → latexEditText (insert diagrams) → latexSyncCitations (10 papers) → latexCompile → PDF with 8-fold model figure.

"Find code for NPC FG-nucleoporin simulations"

Research Agent → searchPapers('NPC FG simulation code') → Code Discovery → paperExtractUrls → paperFindGithubRepo → githubRepoInspect → Python scripts for phase separation models (Yoshizawa 2020).

Automated Workflows

Deep Research workflow scans 50+ NPC papers via searchPapers, structures report with citationGraph from Hetzer (2010), outputs graded synthesis. DeepScan applies 7-step CoVe to verify Schuller et al. (2021) claims against in-cell data (Allegretti 2020). Theorizer generates gating hypotheses from Eibauer (2015) and phase separation (Yoshizawa 2020).

Try Doxa for Nuclear Pore Complex Structure Research

Frequently Asked Questions

What defines nuclear pore complex structure?

NPC is an 8-fold symmetric mega-Dalton assembly of ~1000 proteins per pore, resolved by cryo-EM to scaffold and FG domains. Schuller et al. (2021) show cellular environment modulation.

What methods study NPC structure?

Cryo-EM for Angstrom-resolution (Eibauer et al., 2015; Allegretti et al., 2020), super-resolution for in-cell views. Phase separation biophysics models FG gating (Yoshizawa et al., 2020).

What are key papers on NPC?

Schuller et al. (2021, Nature, 249 cites) on architecture; Allegretti et al. (2020, Nature, 202 cites) on in-cell turnover; Eibauer et al. (2015, Nat Comm, 192 cites) on gating.