Multiple roles of CTDK-I throughout the cell
- Authors
- Srivastava, Rakesh; Duan, Ruxin; Ahn, Seong Hoon
- Issue Date
- Jul-2019
- Publisher
- Birkhauser Verlag
- Keywords
- CTDK-I; Ctk1; CDK12; Genome stability; Translation; rRNA synthesis
- Citation
- Cellular and Molecular Life Sciences, v.76, no.14, pp.2789 - 2797
- Indexed
- SCIE
SCOPUS
- Journal Title
- Cellular and Molecular Life Sciences
- Volume
- 76
- Number
- 14
- Start Page
- 2789
- End Page
- 2797
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/2783
- DOI
- 10.1007/s00018-019-03118-0
- ISSN
- 1420-682X
- Abstract
- The heterotrimeric carboxy-terminal domain kinase I (CTDK-I) in yeast is a cyclin-dependent kinase complex that is evolutionally conserved throughout eukaryotes and phosphorylates the C-terminal domain of the largest subunit of RNA polymerase II (RNApII) on the second-position serine (Ser2) residue of YSPTSPS heptapeptide repeats. CTDK-I plays indispensable roles in transcription elongation and transcription-coupled processing, such as the 3-end processing of nascent mRNA transcripts. However, recent studies have revealed additional roles of CTDK-I beyond its primary effect on transcription by RNApII. Here, we describe recent advances in the regulation of genomic stability and rDNA integrity by CTDK-I and highlight the previously underappreciated cellular roles of CTDK-I in rRNA synthesis by RNA polymerase I and translational initiation and elongation. These multiple roles of CTDK-I throughout the cell expand our understanding of how this complex functions to coordinate diverse cellular processes through gene expression and how the human orthologue exerts its roles in diseased states such as tumorigenesis.
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