Structure, dynamics and RNA binding of the multi-domain splicing factor TIA-1

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• dc.contributor.author Wang, Iren
• dc.contributor.author Hennig, Janosch
• dc.contributor.author Jagtap, Pravin Kumar Ankush
• dc.contributor.author Sonntag, Miriam
• dc.contributor.author Valcárcel, J. (Juan)
• dc.contributor.author Sattler, Michael
• dc.date.accessioned 2025-02-03T07:42:37Z
• dc.date.available 2025-02-03T07:42:37Z
• dc.date.issued 2014
• dc.description Includes supplementary materials for the online appendix.
• dc.description.abstract Alternative pre-messenger ribonucleic acid (pre-mRNA) splicing is an essential process in eukaryotic gene regulation. The T-cell intracellular antigen-1 (TIA-1) is an apoptosis-promoting factor that modulates alternative splicing of transcripts, including the pre-mRNA encoding the membrane receptor Fas. TIA-1 is a multi-domain ribonucleic acid (RNA) binding protein that recognizes poly-uridine tract RNA sequences to facilitate 5′ splice site recognition by the U1 small nuclear ribonucleoprotein (snRNP). Here, we characterize the RNA interaction and conformational dynamics of TIA-1 by nuclear magnetic resonance (NMR), isothermal titration calorimetry (ITC) and small angle X-ray scattering (SAXS). Our NMR-derived solution structure of TIA-1 RRM2–RRM3 (RRM2,3) reveals that RRM2 adopts a canonical RNA recognition motif (RRM) fold, while RRM3 is preceded by an non-canonical helix α0. NMR and SAXS data show that all three RRMs are largely independent structural modules in the absence of RNA, while RNA binding induces a compact arrangement. RRM2,3 binds to pyrimidine-rich FAS pre-mRNA or poly-uridine (U9) RNA with nanomolar affinities. RRM1 has little intrinsic RNA binding affinity and does not strongly contribute to RNA binding in the context of RRM1,2,3. Our data unravel the role of binding avidity and the contributions of the TIA-1 RRMs for recognition of pyrimidine-rich RNAs.en
• dc.format.mimetype application/pdf
• dc.identifier.citation Wang I, Hennig J, Jagtap PKA, Sonntag M, Valcárcel J, Sattler M. Structure, dynamics and RNA binding of the multi-domain splicing factor TIA-1. Nucleic Acids Research. 2014 May 14;42(9):5949-66. DOI: 10.1093/nar/gku193
• dc.identifier.doi http://dx.doi.org/10.1093/nar/gku193
• dc.identifier.issn 0305-1048
• dc.identifier.uri http://hdl.handle.net/10230/69431
• dc.language.iso eng
• dc.publisher Oxford University Press
• dc.relation.ispartof Nucleic Acids Research. 2014 May 14;42(9):5949-66
• dc.rights © The Author(s) 2014. Published by Oxford University Press on behalf of Nucleic Acids Research. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc/3.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.rights.uri http://creativecommons.org/licenses/by-nc/3.0/
• dc.subject.other Ribonucleasesca
• dc.subject.other Proteïnes -- Fixacióca
• dc.subject.other Ressonància magnètica nuclearca
• dc.title Structure, dynamics and RNA binding of the multi-domain splicing factor TIA-1en
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/publishedVersion