Universität zu Köln

Kochan, David Z., Mawer, Julia S. P., Massen, Jennifer ORCID: 0000-0001-9649-1542, Tishinov, Kiril ORCID: 0000-0003-3211-1824, Parekh, Swati ORCID: 0000-0002-4826-1651, Graef, Martin, Spang, Anne ORCID: 0000-0002-2387-6203 and Tessarz, Peter ORCID: 0000-0002-6953-9835 (2021). The RNA-binding protein Puf5 contributes to buffering of mRNA upon chromatin-mediated changes in nascent transcription. J. Cell Sci., 134 (15). CAMBRIDGE: COMPANY BIOLOGISTS LTD. ISSN 1477-9137

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Abstract

Gene expression involves regulation of chromatin structure and transcription, as well as processing of the transcribed mRNA. While there are feedback mechanisms, it is not clear whether these include crosstalk between chromatin architecture and mRNA decay. To address this, we performed a genome-wide genetic screen using a Saccharomyces cerevisiae strain harbouring the H3K56A mutation, which is known to perturb chromatin structure and nascent transcription. We identified Puf5 (also known as Mpt5) as essential in an H3K56A background. Depletion of Puf5 in this background leads to downregulation of Puf5 targets. We suggest that Puf5 plays a role in post-transcriptional buffering of mRNAs, and support this by transcriptional shutoff experiments in which Puf5 mRNA targets are degraded slower in H3K56A cells compared to wild-type cells. Finally, we show that post-transcriptional buffering of Puf5 targets is widespread and does not occur only in an H3K56A mutant, but also in an H3K4R background, which leads to a global increase in nascent transcription. Our data suggest that Puf5 determines the fate of its mRNA targets in a context-dependent manner acting as an mRNA surveillance hub balancing deregulated nascent transcription to maintain physiological mRNA levels.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Kochan, David Z. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mawer, Julia S. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Massen, Jennifer UNSPECIFIED orcid.org/0000-0001-9649-1542 UNSPECIFIED Tishinov, Kiril UNSPECIFIED orcid.org/0000-0003-3211-1824 UNSPECIFIED Parekh, Swati UNSPECIFIED orcid.org/0000-0002-4826-1651 UNSPECIFIED Graef, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Spang, Anne UNSPECIFIED orcid.org/0000-0002-2387-6203 UNSPECIFIED Tessarz, Peter UNSPECIFIED orcid.org/0000-0002-6953-9835 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-579127
DOI:	10.1242/jcs.259051
Journal or Publication Title:	J. Cell Sci.
Volume:	134
Number:	15
Date:	2021
Publisher:	COMPANY BIOLOGISTS LTD
Place of Publication:	CAMBRIDGE
ISSN:	1477-9137
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NUCLEOSOME STRUCTURE; GENE-EXPRESSION; YEAST GENES; ACETYLATION; DEGRADATION; VERSATILE; DYNAMICS; STRATEGY; PACKAGE; SET1 Multiple languages Cell Biology Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57912