at Google ScholarTitle data
Wang, Iren ; Hennig, Janosch ; Jagtap, Pravin Kumar Ankush ; Sonntag, Miriam ; Valcárcel, Juan ; Sattler, Michael:
Structure, dynamics and RNA binding of the multi-domain splicing factor TIA-1.
In: Nucleic Acids Research.
Vol. 42
(2014)
Issue 9
.
- pp. 5949-5966.
ISSN 1362-4962
DOI: https://doi.org/10.1093/nar/gku193
Abstract in another language
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.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry IV - Biophysical Chemistry > Chair Biochemistry IV - Biophysical Chemistry - Univ.-Prof. Dr. Janosch Hennig Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Biochemistry IV - Biophysical Chemistry Research Institutions > Central research institutes > Nordbayerisches Zentrum für NMR-Spektroskopie - NMR-Zentrum |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science > 540 Chemistry 500 Science > 570 Life sciences, biology |
| Date Deposited: | 08 Oct 2021 06:44 |
| Last Modified: | 26 Sep 2024 07:27 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/67249 |