Evidence map›Paper›PMID 26069323›Full record

ArticleThe EMBO journal2015

Reconstitution of the human U snRNP assembly machinery reveals stepwise Sm protein organization.

Nils Neuenkirchen, Clemens Englbrecht, Jürgen Ohmer, Thomas Ziegenhals, Ashwin Chari, Utz Fischer

Open access · greenAbstract read
In one paragraph

Article in The EMBO journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

40 citing papers in PubMed, 61 citations in OpenAlex.

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  17. Alternative Splicing in Human Biology and Disease.Methods in molecular biology (Clifton, N.J.) · 2022
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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

6 authors at 3 institutions in 2 countries.

Nils NeuenkirchenDepartment of Biochemistry, Biocenter, University of Würzburg, Würzburg, Germany.
Clemens EnglbrechtDepartment of Biochemistry, Biocenter, University of Würzburg, Würzburg, Germany.
Jürgen OhmerDepartment of Biochemistry, Biocenter, University of Würzburg, Würzburg, Germany.
Thomas ZiegenhalsDepartment of Biochemistry, Biocenter, University of Würzburg, Würzburg, Germany.
Ashwin ChariResearch Group of 3D Electron Cryomicroscopy, Max Planck Institute for Biophysical Chemistry, Göttingen, Germany utz.fischer@biozentrum.uni-wuerzburg.de ashwin.chari@mpibpc.mpg.de.
Utz FischerDepartment of Biochemistry, Biocenter, University of Würzburg, Würzburg, Germany Department of Radiation Medicine and Applied Sciences, University of California, San Diego, San Diego, CA, USA utz.fischer@biozentrum.uni-wuerzburg.de ashwin.chari@mpibpc.mpg.de.
University of Würzburg · DEMax Planck Institute for Biophysical Chemistry · DEUniversity of California, San Diego · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The assembly of spliceosomal U snRNPs depends on the coordinated action of PRMT5 and SMN complexes in vivo. These trans-acting factors enable the faithful delivery of seven Sm proteins onto snRNA and the formation of the common core of snRNPs. To gain mechanistic insight into their mode of action, we reconstituted the assembly machinery from recombinant sources. We uncover a stepwise and ordered formation of distinct Sm protein complexes on the PRMT5 complex, which is facilitated by the assembly chaperone pICln. Upon completion, the formed pICln-Sm units are displaced by new pICln-Sm protein substrates and transferred onto the SMN complex. The latter acts as a Brownian machine that couples spontaneous conformational changes driven by thermal energy to prevent mis-assembly and to ensure the transfer of Sm proteins to cognate RNA. Investigation of mutant SMN complexes provided insight into the contribution of individual proteins to these activities. The biochemical reconstitution presented here provides a basis for a detailed molecular dissection of the U snRNP assembly reaction.

Indexed as

AnimalsDEAD Box Protein 20HumansMinor Histocompatibility AntigensMuscular Atrophy, SpinalMutationProtein-Arginine N-MethyltransferasesRecombinant ProteinsRibonucleoproteins, Small NuclearRNA, Small NuclearSMN Complex ProteinsDEAD Box Protein 20GEMIN4 protein, humanGEMIN5 protein, humanMinor Histocompatibility AntigensPRMT5 protein, humanProtein-Arginine N-MethyltransferasesRecombinant ProteinsRibonucleoproteins, Small NuclearRNA, Small NuclearSMN Complex ProteinsU1 small nuclear RNAassemblypIClnPRMT5SMNsnRNP

Identifiers

PMID26069323
PMCPMC4547896
OpenAlexW2120911046

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.