Evidence map›Paper›PMID 16987963›Full record

ArticleMolecular biology of the cell2006

Intranuclear binding kinetics and mobility of single native U1 snRNP particles in living cells.

David Grünwald, Beatrice Spottke, Volker Buschmann, Ulrich Kubitscheck

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.8field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 39 citations in OpenAlex.

  1. Predicting human mRNA isoform levels from site-specific splicing kineticsbioRxiv : the preprint server for biology · 2026
    Article
  2. Imaging Organization of RNA Processing within the Nucleus.Cold Spring Harbor perspectives in biology · 2021
    Review
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  14. A perspective of the dynamic structure of the nucleus explored at the single-molecule level.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2011
    Review
  15. RNA processing and export.Cold Spring Harbor perspectives in biology · 2010
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 1 country.

David GrünwaldInstitut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität, D-53115 Bonn, Germany.
Beatrice Spottke
Volker Buschmann
Ulrich Kubitscheck
University of Bonn · DEMax Delbrück Center · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Uridine-rich small nuclear ribonucleoproteins (U snRNPs) are splicing factors, which are diffusely distributed in the nucleoplasm and also concentrated in nuclear speckles. Fluorescently labeled, native U1 snRNPs were microinjected into the cytoplasm of living HeLa cells. After nuclear import single U1 snRNPs could be visualized and tracked at a spatial precision of 30 nm at a frame rate of 200 Hz employing a custom-built microscope with single-molecule sensitivity. The single-particle tracks revealed that most U1 snRNPs were bound to specific intranuclear sites, many of those presumably representing pre-mRNA splicing sites. The dissociation kinetics from these sites showed a multiexponential decay behavior on time scales ranging from milliseconds to seconds, reflecting the involvement of U1 snRNPs in numerous distinct interactions. The average dwell times for U1 snRNPs bound at sites within the nucleoplasm did not differ significantly from those in speckles, indicating that similar processes occur in both compartments. Mobile U1 snRNPs moved with diffusion constants in the range from 0.5 to 8 microm2/s. These values were consistent with uncomplexed U1 snRNPs diffusing at a viscosity of 5 cPoise and U1 snRNPs moving in a largely restricted manner, and U1 snRNPs contained in large supramolecular assemblies such as spliceosomes or supraspliceosomes.

Indexed as

Binding SitesCell NucleusCell SurvivalHeLa CellsHumansKineticsProtein BindingProtein TransportRibonucleoprotein, U1 Small NuclearRibonucleoprotein, U1 Small Nuclear

Identifiers

PMID16987963
PMCPMC1679670
OpenAlexW2151998942

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.