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Genetic and Pharmacological Evidence for Kinetic Competition Between Alternative Poly(A) Sites in Yeast

Abstract

Most eukaryotic mRNAs accommodate alternative sites of poly(A) addition in the 3' untranslated region in order to regulate mRNA function. Here, we present a systematic analysis of 3' end formation factors, which revealed 3'UTR lengthening in response to a loss of the core machinery, whereas a loss of the Sen1 helicase resulted in shorter 3'UTRs. We show that the anti-cancer drug cordycepin, 3' deoxyadenosine, caused nucleotide accumulation and the usage of distal poly(A) sites. Mycophenolic acid, a drug which reduces GTP levels and impairs RNA polymerase II (RNAP II) transcription elongation, promoted the usage of proximal sites and reversed the effects of cordycepin on alternative polyadenylation. Moreover, cordycepin-mediated usage of distal sites was associated with a permissive chromatin template and was suppressed in the presence of an mutation, which slows RNAP II elongation rate. We propose that alternative polyadenylation is governed by temporal coordination of RNAP II transcription and 3' end processing and controlled by the availability of 3' end factors, nucleotide levels and chromatin landscape.

Citing Articles

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Turner R, Beilharz T Microorganisms. 2021; 9(9).

PMID: 34576779 PMC: 8464734. DOI: 10.3390/microorganisms9091885.


Genetic and pharmacological evidence for kinetic competition between alternative poly(A) sites in yeast.

Turner R, Harrison P, Swaminathan A, Kraupner-Taylor C, Goldie B, See M Elife. 2021; 10.

PMID: 34232857 PMC: 8263057. DOI: 10.7554/eLife.65331.

References
1.
Chen S, Hyman L . A specific RNA-protein interaction at yeast polyadenylation efficiency elements. Nucleic Acids Res. 1998; 26(21):4965-74. PMC: 147941. DOI: 10.1093/nar/26.21.4965. View

2.
Donohoe D, Collins L, Wali A, Bigler R, Sun W, Bultman S . The Warburg effect dictates the mechanism of butyrate-mediated histone acetylation and cell proliferation. Mol Cell. 2012; 48(4):612-26. PMC: 3513569. DOI: 10.1016/j.molcel.2012.08.033. View

3.
Uptain S, Kane C, CHAMBERLIN M . Basic mechanisms of transcript elongation and its regulation. Annu Rev Biochem. 1997; 66:117-72. DOI: 10.1146/annurev.biochem.66.1.117. View

4.
Preker P, Lingner J, Keller W . The FIP1 gene encodes a component of a yeast pre-mRNA polyadenylation factor that directly interacts with poly(A) polymerase. Cell. 1995; 81(3):379-89. DOI: 10.1016/0092-8674(95)90391-7. View

5.
Graber J, Cantor C, Mohr S, Smith T . In silico detection of control signals: mRNA 3'-end-processing sequences in diverse species. Proc Natl Acad Sci U S A. 1999; 96(24):14055-60. PMC: 24189. DOI: 10.1073/pnas.96.24.14055. View