Evidence map›Paper›PMID 22988298›Full record

ArticleMolecular and cellular biology2012

Interaction of cyclin-dependent kinase 12/CrkRS with cyclin K1 is required for the phosphorylation of the C-terminal domain of RNA polymerase II.

S-W Grace Cheng, Michael A Kuzyk, Annie Moradian, Taka-Aki Ichu, Vicky C-D Chang, Jerry F Tien, Sarah E Vollett, Malachi Griffith, Marco A Marra, Gregg B Morin

Open access · bronzeAbstract read
In one paragraph

Article in Molecular and cellular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

79 citing papers in PubMed, 120 citations in OpenAlex.

  1. Trial
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  6. Dual Modes of Gene Regulation by CDK12.bioRxiv : the preprint server for biology · 2025
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  9. Review
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  12. Review
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  14. Synthetic Lethal Targeting of CDK12-Deficient Prostate Cancer with PARP Inhibitors.Clinical cancer research : an official journal of the American Association for Cancer Research · 2024
    Article
  15. Article
  16. Article
  17. Article
  18. bioRxiv : the preprint server for biology · 2024
    Article
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19 more citing papers are in PubMed but not listed here.

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

10 authors at 4 institutions in 2 countries.

S-W Grace ChengMichael Smith Genome Sciences Centre, British Columbia Cancer Agency, Vancouver, British Columbia, Canada.
Michael A Kuzyk
Annie Moradian
Taka-Aki Ichu
Vicky C-D Chang
Jerry F Tien
Sarah E Vollett
Malachi Griffith
Marco A Marra
Gregg B Morin
BC Cancer Agency · CACanada's Michael Smith Genome Sciences Centre · CAUniversity of British Columbia · CAWashington University in St. Louis · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

CrkRS (Cdc2-related kinase, Arg/Ser), or cyclin-dependent kinase 12 (CKD12), is a serine/threonine kinase believed to coordinate transcription and RNA splicing. While CDK12/CrkRS complexes were known to phosphorylate the C-terminal domain (CTD) of RNA polymerase II (RNA Pol II), the cyclin regulating this activity was not known. Using immunoprecipitation and mass spectrometry, we identified a 65-kDa isoform of cyclin K (cyclin K1) in endogenous CDK12/CrkRS protein complexes. We show that cyclin K1 complexes isolated from mammalian cells contain CDK12/CrkRS but do not contain CDK9, a presumed partner of cyclin K. Analysis of extensive RNA-Seq data shows that the 65-kDa cyclin K1 isoform is the predominantly expressed form across numerous tissue types. We also demonstrate that CDK12/CrkRS is dependent on cyclin K1 for its kinase activity and that small interfering RNA (siRNA) knockdown of CDK12/CrkRS or cyclin K1 has similar effects on the expression of a luciferase reporter gene. Our data suggest that cyclin K1 is the primary cyclin partner for CDK12/CrkRS and that cyclin K1 is required to activate CDK12/CrkRS to phosphorylate the CTD of RNA Pol II. These properties are consistent with a role of CDK12/CrkRS in regulating gene expression through phosphorylation of RNA Pol II.

Indexed as

Gene Expression RegulationBinding SitesCyclin-Dependent KinasesCyclinsGenes, ReporterHEK293 CellsHeLa CellsHumansImmunoprecipitationLuciferasesMass SpectrometryPhosphorylationProtein BindingProtein IsoformsProtein Structure, TertiaryRNA Polymerase IICCNK protein, humanCDK12 protein, humanCyclin-Dependent KinasesCyclinsLuciferasesProtein IsoformsRNA Polymerase IIRNA, Small Interfering

Identifiers

PMID22988298
PMCPMC3486194
OpenAlexW2109885069

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.