A novel function for the U2AF 65 splicing factor in promoting pre-mRNA 3 '-end processing

S Millevoi; F Geraghty; B Idowu; J L Y Tam; M Antoniou; S Vagner

doi:10.1093/embo-reports/kvf173

A novel function for the U2AF 65 splicing factor in promoting pre-mRNA 3 '-end processing

S Millevoi, F Geraghty, B Idowu, J L Y Tam, M Antoniou, S Vagner

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

Splicing and 3'-end processing (including cleavage and polyadenylation) of vertebrate pre-mRNAs are tightly coupled events that contribute to the extensive molecular network that coordinates gene expression. Sequences within the terminal intron of genes are essential to stimulate pre-mRNA 3'-end processing, although the factors mediating this effect are unknown. Here, we show that the pyrimidine tract of the last splice acceptor site of the human beta-globin gene is necessary to stimulate mRNA 3'-end formation in vivo and binds the U2AF 65 splicing factor. Naturally occurring beta-thalassaemia-causing mutations within the pyrimidine tract reduces both U2AF 65 binding and 3'-end cleavage efficiency. Significantly, a fusion protein containing U2AF 65, when tethered upstream of a cleavage/polyadenylation site, increases 3'-end cleavage efficiency in vitro and in vivo. Therefore, we propose that U2AF 65 promotes 3'-end processing, which contributes to 3'-terminal exon definition.

Original language	English
Pages (from-to)	869 - 874
Number of pages	6
Journal	EMBO Reports
Volume	3
Issue number	9
DOIs	https://doi.org/10.1093/embo-reports/kvf173
Publication status	Published - 1 Sept 2002

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title = "A novel function for the U2AF 65 splicing factor in promoting pre-mRNA 3 '-end processing",

abstract = "Splicing and 3'-end processing (including cleavage and polyadenylation) of vertebrate pre-mRNAs are tightly coupled events that contribute to the extensive molecular network that coordinates gene expression. Sequences within the terminal intron of genes are essential to stimulate pre-mRNA 3'-end processing, although the factors mediating this effect are unknown. Here, we show that the pyrimidine tract of the last splice acceptor site of the human beta-globin gene is necessary to stimulate mRNA 3'-end formation in vivo and binds the U2AF 65 splicing factor. Naturally occurring beta-thalassaemia-causing mutations within the pyrimidine tract reduces both U2AF 65 binding and 3'-end cleavage efficiency. Significantly, a fusion protein containing U2AF 65, when tethered upstream of a cleavage/polyadenylation site, increases 3'-end cleavage efficiency in vitro and in vivo. Therefore, we propose that U2AF 65 promotes 3'-end processing, which contributes to 3'-terminal exon definition.",

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T1 - A novel function for the U2AF 65 splicing factor in promoting pre-mRNA 3 '-end processing

AU - Millevoi, S

AU - Geraghty, F

AU - Idowu, B

AU - Tam, J L Y

AU - Antoniou, M

AU - Vagner, S

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N2 - Splicing and 3'-end processing (including cleavage and polyadenylation) of vertebrate pre-mRNAs are tightly coupled events that contribute to the extensive molecular network that coordinates gene expression. Sequences within the terminal intron of genes are essential to stimulate pre-mRNA 3'-end processing, although the factors mediating this effect are unknown. Here, we show that the pyrimidine tract of the last splice acceptor site of the human beta-globin gene is necessary to stimulate mRNA 3'-end formation in vivo and binds the U2AF 65 splicing factor. Naturally occurring beta-thalassaemia-causing mutations within the pyrimidine tract reduces both U2AF 65 binding and 3'-end cleavage efficiency. Significantly, a fusion protein containing U2AF 65, when tethered upstream of a cleavage/polyadenylation site, increases 3'-end cleavage efficiency in vitro and in vivo. Therefore, we propose that U2AF 65 promotes 3'-end processing, which contributes to 3'-terminal exon definition.

AB - Splicing and 3'-end processing (including cleavage and polyadenylation) of vertebrate pre-mRNAs are tightly coupled events that contribute to the extensive molecular network that coordinates gene expression. Sequences within the terminal intron of genes are essential to stimulate pre-mRNA 3'-end processing, although the factors mediating this effect are unknown. Here, we show that the pyrimidine tract of the last splice acceptor site of the human beta-globin gene is necessary to stimulate mRNA 3'-end formation in vivo and binds the U2AF 65 splicing factor. Naturally occurring beta-thalassaemia-causing mutations within the pyrimidine tract reduces both U2AF 65 binding and 3'-end cleavage efficiency. Significantly, a fusion protein containing U2AF 65, when tethered upstream of a cleavage/polyadenylation site, increases 3'-end cleavage efficiency in vitro and in vivo. Therefore, we propose that U2AF 65 promotes 3'-end processing, which contributes to 3'-terminal exon definition.

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A novel function for the U2AF 65 splicing factor in promoting pre-mRNA 3 '-end processing

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