Recent molecular insights into canonical pre-mRNA 3'-end processing.

Transcription
Yadong SunLiang Tong

Abstract

The majority of eukaryotic messenger RNA precursors (pre-mRNAs) undergo cleavage and polyadenylation at their 3' end. This canonical 3'-end processing depends on sequence elements in the pre-mRNA as well as a mega-dalton protein machinery. The cleavage site in mammalian pre-mRNAs is located between an upstream poly(A) signal, most frequently an AAUAAA hexamer, and a GU-rich downstream sequence element. This review will summarize recent advances from the studies on this canonical 3'-end processing machinery. They have revealed the molecular mechanism for the recognition of the poly(A) signal and provided the first glimpse into the overall architecture of the machinery. The studies also show that the machinery is highly dynamic conformationally, and extensive re-arrangements are necessary for its activation. Inhibitors targeting the active site of the CPSF73 nuclease of this machinery have anti-cancer, anti-inflammatory and anti-protozoal effects, indicating that CPSF73 and pre-mRNA 3'-end processing in general are attractive targets for drug discovery. APA: alternative polyadenylation; β-CASP: metallo-β-lactamase-associated CPSF Artemis SNM1/PSO2; CTD: C-terminal domain; CF: cleavage factor; CPF: cleavage and polyadenylation fac...Continue Reading

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Citations

Oct 31, 2020·Genes & Development·Keith Hamilton, Liang Tong
Jan 9, 2021·RNA Biology·Yi RanChengguo Yao
Apr 13, 2021·Wiley Interdisciplinary Reviews. RNA·Isabel Pereira-Castro, Alexandra Moreira
May 5, 2021·Trends in Biochemical Sciences·Huiyun Liu, Claire L Moore
Aug 6, 2021·Biochemical Society Transactions·Zbigniew Dominski, Liang Tong

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