Article (Scientific journals)
Strand-specific, high-resolution mapping of modified RNA polymerase II
Milligan, Laura; Huynh-Thu, Vân Anh; Delan-Forino, Clémentine et al.
2016In Molecular Systems Biology, 12 (6), p. 874
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Keywords :
hidden Markov model; polymerase CTD phosphorylation; transcription; yeast
Abstract :
[en] Reversible modification of the RNAPII C-terminal domain links transcription with RNA processing and surveillance activities. To better understand this, we mapped the location of RNAPII carrying the five types of CTD phosphorylation on the RNA transcript, providing strand-specific, nucleotide-resolution information, and we used a machine learning-based approach to define RNAPII states. This revealed enrichment of Ser5P, and depletion of Tyr1P, Ser2P, Thr4P, and Ser7P in the transcription start site (TSS) proximal ~150 nt of most genes, with depletion of all modifications close to the poly(A) site. The TSS region also showed elevated RNAPII relative to regions further 3′, with high recruitment of RNA surveillance and termination factors, and correlated with the previously mapped 3′ ends of short, unstable ncRNA transcripts. A hidden Markov model identified distinct modification states associated with initiating, early elongating and later elongating RNAPII. The initiation state was enriched near the TSS of protein-coding genes and persisted throughout exon 1 of intron-containing genes. Notably, unstable ncRNAs apparently failed to transition into the elongation states seen on protein-coding genes.
Disciplines :
Genetics & genetic processes
Author, co-author :
Milligan, Laura;  University of Edinburgh > Wellcome Trust Centre for Cell Biology
Huynh-Thu, Vân Anh ;  Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Delan-Forino, Clémentine;  University of Edinburgh > Wellcome Trust Centre for Cell Biology
Tuck, Alex;  University of Edinburgh > Wellcome Trust Centre for Cell Biology,
Petfalski, Elisabeth;  University of Edinburgh > Wellcome Trust Centre for Cell Biology
Lombraña, Rodrigo;  University of Edinburgh > IGMM > MRC Human Genetics Unit
Sanguinetti;  University of Edinburgh > School of Informatics
Kudla, Grzegorz;  University of Edinburgh > IGMM > MRC Human Genetics Unit
Tollervey, David;  University of Edinburgh > Wellcome Trust Centre for Cell Biology
Language :
English
Title :
Strand-specific, high-resolution mapping of modified RNA polymerase II
Publication date :
June 2016
Journal title :
Molecular Systems Biology
ISSN :
1744-4292
Publisher :
Wiley-Blackwell, United States
Volume :
12
Issue :
6
Pages :
874
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
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