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Decker, T.-M. ; Forné, I.* ; Straub, T.* ; Elsaman, H. ; Ma, G. ; Shah, N. ; Imhof, A.* ; Eick, D.

Analog-sensitive cell line identifies cellular substrates of CDK9.

Oncotarget 10, 6934-6943 (2019)
Verlagsversion Forschungsdaten DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Transcriptional cyclin-dependent kinases regulate all phases of transcription. Cyclin-dependent kinase 9 (CDK9) has been implicated in the regulation of promoter-proximal pausing of RNA polymerase II and more recently in transcription termination. Study of the substrates of CDK9 has mostly been limited to in vitro approaches that lack a quantitative assessment of CDK9 activity. Here we analyzed the cellular phosphoproteome upon inhibition of CDK9 by combining analog-sensitive kinase technology with quantitative phosphoproteomics in Raji B-cells. Our analysis revealed the activity of CDK9 on 1102 phosphosites quantitatively, and we identified 120 potential cellular substrates. Furthermore, a substantial number of CDK9 substrates were described as splicing factors, highlighting the role of CDK9 in transcription-coupled splicing events. Based on comparison to in vitro data, our findings suggest that cellular context fundamentally impacts the activity of CDK9 and specific selection of its substrates.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Cdk9 ; Rna Splicing ; Phosphoproteomics ; Protein Kinase ; Transcription
Sprache englisch
Veröffentlichungsjahr 2019
HGF-Berichtsjahr 2019
ISSN (print) / ISBN 1949-2553
e-ISSN 1949-2553
Zeitschrift OncoTarget
Quellenangaben Band: 10, Heft: 65, Seiten: 6934-6943 Artikelnummer: , Supplement: ,
Verlag Impact Journals LLC
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Functional Epigenetics (IFE)
POF Topic(s) 30203 - Molecular Targets and Therapies
Forschungsfeld(er) Helmholtz Diabetes Center
PSP-Element(e) G-502890-001
DOI 10.18632/oncotarget.27334
Scopus ID 85077540628
PubMed ID 31857848
Erfassungsdatum 2019-12-23
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