Evidence map›Paper›PMID 22110043›Full record

ArticleNucleic acids research2012

Functional mammalian spliceosomal complex E contains SMN complex proteins in addition to U1 and U2 snRNPs.

Evgeny M Makarov, Nicholas Owen, Andrew Bottrill, Olga V Makarova

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

46 citing papers in PubMed, 74 citations in OpenAlex.

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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.

Evgeny M MakarovDepartment of Biochemistry, University of Leicester, Leicester LE1 9HN, UK.
Nicholas Owen
Andrew Bottrill
Olga V Makarova
University of Leicester · GBBrunel University of London · GB

Funding

Biotechnology and Biological Sciences Research Council BB/C004272/1
6 · The paper itself

Abstract

Spliceosomes remove introns from primary gene transcripts. They assemble de novo on each intron through a series of steps that involve the incorporation of five snRNP particles and multiple non-snRNP proteins. In mammals, all the intermediate complexes have been characterized on one transcript (MINX), with the exception of the very first, complex E. We have purified this complex by two independent procedures using antibodies to either U1-A or PRPF40A proteins, which are known to associate at an early stage of assembly. We demonstrate that the purified complexes are functional in splicing using commitment assays. These complexes contain components expected to be in the E complex and a number of previously unrecognized factors, including survival of motor neurons (SMN) and proteins of the SMN-associated complex. Depletion of the SMN complex proteins from nuclear extracts inhibits formation of the E complex and causes non-productive complexes to accumulate. This suggests that the SMN complex stabilizes the association of U1 and U2 snRNPs with pre-mRNA. In addition, the antibody to PRPF40A precipitated U2 snRNPs from nuclear extracts, indicating that PRPF40A associates with U2 snRNPs.

Indexed as

Carrier ProteinsHeLa CellsHumansRibonucleoprotein, U1 Small NuclearRibonucleoprotein, U2 Small NuclearRNA SplicingSMN Complex ProteinsSpliceosomesCarrier ProteinsPRPF40A protein, humanRibonucleoprotein, U1 Small NuclearRibonucleoprotein, U2 Small NuclearSMN Complex Proteins

Identifiers

PMID22110043
PMCPMC3315330
OpenAlexW2028363713

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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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.