Gaber, T.* ; Monecke, T.* ; Grabowski, J.* ; Simon, B.* ; Williams, T.* ; Roman, V. ; Chao, J.* ; Hennig, J.* ; Ephrussi, A.* ; Niessing, D. ; Heber, S.D.*
A direct interaction between the RNA-binding proteins Staufen and Tm1-I/C in the oskar mRNA transport complex.
Cell Rep. 44:115906 (2025)
In the Drosophila female germline, oskar messenger RNA is transported on microtubules from the nurse cells to the posterior pole of the oocyte, where it is translated. Transport of oskar transcripts from the nurse cells into the oocyte requires dynein, while localization of the mRNAs within the oocyte to the posterior pole is dependent upon kinesin-1. Staufen, a double-stranded RNA (dsRNA)-binding protein, has been shown to bind the oskar mRNA transport complex in the oocyte and inactivate dynein; however, it remains unclear how kinesin is activated. Here, using surface plasmon resonance, nuclear magnetic resonance spectroscopy, and RNA imaging within egg chambers, we demonstrate that Staufen directly interacts with Tropomyosin1-I/C (Tm1), a non-canonical kinesin adaptor. This work provides molecular evidence of how Staufen integrates into the oskar messenger ribonucleoprotein (mRNP) complex.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Cp: Molecular Biology ; Nmr ; Rna Localization ; Rna-binding Proteins ; Biophysics ; Motor Proteins ; Protein-protein Interactions; Translational Regulation; Localization; Tropomyosin; Kinesin-1; Egalitarian; Reveals; Domains; Signals; Chain
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2025
Prepublished im Jahr
0
HGF-Berichtsjahr
2025
ISSN (print) / ISBN
2211-1247
e-ISSN
2211-1247
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 44,
Heft: 7,
Seiten: ,
Artikelnummer: 115906
Supplement: ,
Reihe
Verlag
Cell Press
Verlagsort
50 Hampshire St, Floor 5, Cambridge, Ma 02139 Usa
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
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Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30203 - Molecular Targets and Therapies
Forschungsfeld(er)
Enabling and Novel Technologies
PSP-Element(e)
G-503091-001
Förderungen
EMBL
DFG
Deutsche Forschungsgemeinschaft (DFG)
EMBL Interdisciplinary Postdoctoral fellowship (EIPOD) Program under Marie Curie Cofund Actions MSCA-COFUND-FP
Copyright
Erfassungsdatum
2025-06-27