ArticleMolecular & cellular proteomics : MCP2010
The protein interaction network of the human transcription machinery reveals a role for the conserved GTPase RPAP4/GPN1 and microtubule assembly in nuclear import and biogenesis of RNA polymerase II.
Article in Molecular & cellular proteomics : MCP, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
56 citing papers in PubMed, 102 citations in OpenAlex.
- Dissection ofmBio · 2026Article
- Structure of human cytoplasmic Pol II complex explains global transcription repression by GDOWN1.Nature communications · 2026Article
- Structure of cytoplasmic RNA polymerase II.Nature communications · 2026Article
- Proposal of Chemical Inhibitors That Compete with the Binding of RNA Polymerase II Subunits to Essential GTPases GPN Npa3 and Gpn1.ACS omega · 2025Article
- Review
- Comprehensive analysis of GPN1 in human cancer and its effects on the migration of hepatocellular carcinoma cells.Biomolecules & biomedicine · 2025Article
- CTDP1 and RPB7 stabilize Pol II and permit reinitiation.Nature communications · 2025Article
- Maf1 phosphorylation is regulated through the action of prefoldin-like Bud27 on PP4 phosphatase in Saccharomyces cerevisiae.Nucleic acids research · 2024Article
- Dosage suppressors of gpn2ts mutants and functional insights into the role of Gpn2 in budding yeast.PloS one · 2024Article
- ATAC and SAGA co-activator complexes utilize co-translational assembly, but their cellular localization properties and functions are distinct.Cell reports · 2023Article
- ATAC and SAGA coactivator complexes utilize co-translational assembly, but their cellular localization properties and functions are distinct.bioRxiv : the preprint server for biology · 2023Article
- Article
- The transcriptional coactivator RUVBL2 regulates Pol II clustering with diverse transcription factors.Nature communications · 2022Article
- The Role of Hsp90-R2TP in Macromolecular Complex Assembly and Stabilization.Biomolecules · 2022Review
- Karyopherin-mediated nucleocytoplasmic transport.Nature reviews. Molecular cell biology · 2022Review
- The Association of Rpb4 with RNA Polymerase II Depends on CTD Ser5P Phosphatase Rtr1 and Influences mRNA Decay inInternational journal of molecular sciences · 2022Article
- A nuclear proteome localization screen reveals the exquisite specificity of Gpn2 in RNA polymerase biogenesis.Cell cycle (Georgetown, Tex.) · 2021Article
- Biogenesis of RNA Polymerases in Yeast.Frontiers in molecular biosciences · 2021Review
- Prefoldin-like Bud27 influences the transcription of ribosomal components and ribosome biogenesis inRNA (New York, N.Y.) · 2020Article
- The pericentromeric protein shugoshin 2 cooperates with HSF1 in heat shock response and RNA Pol II recruitment.The EMBO journal · 2019Article
Corrections and comments
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Authors and funding
10 authors at 3 institutions in 1 country.
Funding
Abstract
RNA polymerase II (RNAPII), the 12-subunit enzyme that synthesizes all mRNAs and several non-coding RNAs in eukaryotes, plays a central role in cell function. Although multiple proteins are known to regulate the activity of RNAPII during transcription, little is known about the machinery that controls the fate of the enzyme before or after transcription. We used systematic protein affinity purification coupled to mass spectrometry (AP-MS) to characterize the high resolution network of protein interactions of RNAPII in the soluble fraction of human cell extracts. Our analysis revealed that many components of this network participate in RNAPII biogenesis. We show here that RNAPII-associated protein 4 (RPAP4/GPN1) shuttles between the nucleus and the cytoplasm and regulates nuclear import of POLR2A/RPB1 and POLR2B/RPB2, the two largest subunits of RNAPII. RPAP4/GPN1 is a member of a newly discovered GTPase family that contains a unique and highly conserved GPN loop motif that we show is essential, in conjunction with its GTP-binding motifs, for nuclear localization of POLR2A/RPB1 in a process that also requires microtubule assembly. A model for RNAPII biogenesis is presented.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.