Rct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.

Phosphorylation of the C-terminal domain (CTD) of RNA polymerase II (RNAP II) is a dynamic process that regulates transcription and coordinates it with pre-mRNA processing. We show here that Rct1, a nuclear multidomain cyclophilin from Schizosaccharomyces pombe, is encoded by an essential gene that...

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Main Authors: Gullerova, M, Barta, A, Lorkovic, Z
Format: Journal article
Language:English
Published: 2007
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author Gullerova, M
Barta, A
Lorkovic, Z
author_facet Gullerova, M
Barta, A
Lorkovic, Z
author_sort Gullerova, M
collection OXFORD
description Phosphorylation of the C-terminal domain (CTD) of RNA polymerase II (RNAP II) is a dynamic process that regulates transcription and coordinates it with pre-mRNA processing. We show here that Rct1, a nuclear multidomain cyclophilin from Schizosaccharomyces pombe, is encoded by an essential gene that interacts with the CTD and regulates its phosphorylation in vivo. Downregulation of Rct1 levels results in increased phosphorylation of the CTD at both Ser2 and Ser5 and in a commensurate decrease in RNAP II transcription. In contrast, overexpression of Rct1 decreases phosphorylation on both sites. The close association of Rct1 with transcriptionally active chromatin suggests a role in regulation of RNAP II transcriptional activity. These data, together with the pleiotropic phenotype upon Rct1 deregulation, suggest that this multidomain cyclophilin is an important player in maintaining the correct phosphorylation code of the CTD and thereby regulating CTD function.
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spelling oxford-uuid:085e99e2-737f-4b73-9a11-dce6ce01ca992022-03-26T09:12:29ZRct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:085e99e2-737f-4b73-9a11-dce6ce01ca99EnglishSymplectic Elements at Oxford2007Gullerova, MBarta, ALorkovic, ZPhosphorylation of the C-terminal domain (CTD) of RNA polymerase II (RNAP II) is a dynamic process that regulates transcription and coordinates it with pre-mRNA processing. We show here that Rct1, a nuclear multidomain cyclophilin from Schizosaccharomyces pombe, is encoded by an essential gene that interacts with the CTD and regulates its phosphorylation in vivo. Downregulation of Rct1 levels results in increased phosphorylation of the CTD at both Ser2 and Ser5 and in a commensurate decrease in RNAP II transcription. In contrast, overexpression of Rct1 decreases phosphorylation on both sites. The close association of Rct1 with transcriptionally active chromatin suggests a role in regulation of RNAP II transcriptional activity. These data, together with the pleiotropic phenotype upon Rct1 deregulation, suggest that this multidomain cyclophilin is an important player in maintaining the correct phosphorylation code of the CTD and thereby regulating CTD function.
spellingShingle Gullerova, M
Barta, A
Lorkovic, Z
Rct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.
title Rct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.
title_full Rct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.
title_fullStr Rct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.
title_full_unstemmed Rct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.
title_short Rct1, a nuclear RNA recognition motif-containing cyclophilin, regulates phosphorylation of the RNA polymerase II C-terminal domain.
title_sort rct1 a nuclear rna recognition motif containing cyclophilin regulates phosphorylation of the rna polymerase ii c terminal domain
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AT bartaa rct1anuclearrnarecognitionmotifcontainingcyclophilinregulatesphosphorylationofthernapolymeraseiicterminaldomain
AT lorkovicz rct1anuclearrnarecognitionmotifcontainingcyclophilinregulatesphosphorylationofthernapolymeraseiicterminaldomain