Chromatin-sensitive cryptic promoters putatively drive expression of alternative protein isoforms in yeast
Chromatin-sensitive cryptic promoters putatively drive expression of alternative protein isoforms in yeast
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染色质敏感的隐性启动子可能驱动酵母中替代蛋白质亚型的表达
DOI:
10.1101/gr.243378.118
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发表时间:
2019-11
期刊:
影响因子:
7
通讯作者:
Vicent Pelechano
中科院分区:
文献类型:
--
作者:
Wu Wei;Bianca P. Hennig;Jingwen Wang;Yujie Zhang;Ilaria Piazza;Yerma Pareja Sanchez;Christophe D. Chabbert;Sophie H. Adjalley;Lars M. Steinmetz;Vicent Pelechano
Cryptic transcription is widespread and generates a heterogeneous group of RNA molecules of unknown function. To improve our understanding of cryptic transcription, we investigated their transcription start site (TSS) usage, chromatin organization, and posttranscriptional consequences in Saccharomyces cerevisiae. We show that TSSs of chromatin-sensitive internal cryptic transcripts retain comparable features of canonical TSSs in terms of DNA sequence, directionality, and chromatin accessibility. We define the 5′ and 3′ boundaries of cryptic transcripts and show that, contrary to RNA degradation–sensitive ones, they often overlap with the end of the gene, thereby using the canonical polyadenylation site, and associate to polyribosomes. We show that chromatin-sensitive cryptic transcripts can be recognized by ribosomes and may produce truncated polypeptides from downstream, in-frame start codons. Finally, we confirm the presence of the predicted polypeptides by reanalyzing N-terminal proteomic data sets. Our work suggests that a fraction of chromatin-sensitive internal cryptic promoters initiates the transcription of alternative truncated mRNA isoforms. The expression of these chromatin-sensitive isoforms is conserved from yeast to human, expanding the functional consequences of cryptic transcription and proteome complexity.
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影响因子:
9.9
作者:
Gawron D;Ndah E;Gevaert K;Van Damme P
通讯作者:
Van Damme P
DOI:
10.1016/b978-0-12-809633-8.20106-4
发表时间:
2020-02
期刊:
--
影响因子:
--
作者:
A. Prjibelski;Anton I. Korobeynikov;Alla L. Lapidus
通讯作者:
A. Prjibelski;Anton I. Korobeynikov;Alla L. Lapidus
影响因子:
2.6
作者:
V. Pelechano
通讯作者:
V. Pelechano
影响因子:
7.7
作者:
Chia M;Tresenrider A;Chen J;Spedale G;Jorgensen V;Ünal E;van Werven FJ
通讯作者:
van Werven FJ
DOI:
10.1101/347575
发表时间:
2018-06
期刊:
bioRxiv
影响因子:
--
作者:
Stephen M. Doris;James Chuang;James Chuang;O. Viktorovskaya;M. Murawska;Dan Spatt;L. S. Churchman;F. Winston
通讯作者:
Stephen M. Doris;James Chuang;James Chuang;O. Viktorovskaya;M. Murawska;Dan Spatt;L. S. Churchman;F. Winston