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Transcriptome-wide analyses of CstF64–RNA interactions in global regulation of mRNA alternative polyadenylation

Open access
Yao, Chengguo, Biesinger, Jacob, Wan, Ji, Weng, Lingjie, Xing, Yi, Xie, Xiaohui, Shi, Yongsheng·2012·Proceedings of the National Academy of Sciences

Abstract

Cleavage stimulation factor 64 kDa (CstF64) is an essential pre-mRNA 3′ processing factor and an important regulator of alternative polyadenylation (APA). Here we characterized CstF64–RNA interactions in vivo at the transcriptome level and investigated the role of CstF64 in global APA regulation through individual nucleotide resolution UV crosslinking and immunoprecipitation sequencing and direct RNA sequencing analyses. We observed highly specific CstF64–RNA interactions at poly(A) sites (PASs), and we provide evidence that such interactions are widely variable in affinity and may be differentially required for PAS recognition. Depletion of CstF64 by RNAi has a relatively small effect on the global APA profile, but codepletion of the CstF64 paralog CstF64τ leads to greater APA changes, most of which are characterized by the increased relative use of distal PASs. Finally, we found that CstF64 binds to thousands of dormant intronic PASs that are suppressed, at least in part, by U1 small nuclear ribonucleoproteins. Taken together, our findings provide insight into the mechanisms of PAS recognition and identify CstF64 as an important global regulator of APA.

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Metadata

Authors
Yao, C., Biesinger, J., Wan, J., Weng, L., Xing, Y., Xie, X., & Shi, Y.
Venue
Proceedings of the National Academy of Sciences
Published
2012-10-29
Volume
109
Issue
46
Pages
18773-18778
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2045709965
Cited by
208
References
6
FWCI
6.16
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Transcriptome-wide analyses of CstF64–RNA interactions in global regulation of mRNA alternative polyadenylation. https://app.cochat.ai/papers/10.1073/pnas.1211101109
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Yao, C., Biesinger, J., Wan, J., Weng, L., Xing, Y., Xie, X., & Shi, Y. (2012). Transcriptome-wide analyses of CstF64–RNA interactions in global regulation of mRNA alternative polyadenylation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1211101109

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