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Cytoplasmic TAF2–TAF8–TAF10 complex provides evidence for nuclear holo–TFIID assembly from preformed submodules

Author

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  • Simon Trowitzsch

    (European Molecular Biology Laboratory, Grenoble Outstation
    Unit for Virus Host-Cell Interactions, University Grenoble Alpes-EMBL-CNRS)

  • Cristina Viola

    (European Molecular Biology Laboratory, Grenoble Outstation
    Unit for Virus Host-Cell Interactions, University Grenoble Alpes-EMBL-CNRS)

  • Elisabeth Scheer

    (Cellular Signaling and Nuclear Dynamics Program, Institut de Génétique et de Biologie Moléculaire et Cellulaire)

  • Sascha Conic

    (Cellular Signaling and Nuclear Dynamics Program, Institut de Génétique et de Biologie Moléculaire et Cellulaire)

  • Virginie Chavant

    (Proteomics Platform, Institut de Génétique et de Biologie Moléculaire et Cellulaire)

  • Marjorie Fournier

    (Cellular Signaling and Nuclear Dynamics Program, Institut de Génétique et de Biologie Moléculaire et Cellulaire)

  • Gabor Papai

    (Institut de Génétique et de Biologie Moléculaire et Cellulaire)

  • Ima-Obong Ebong

    (Chemistry Research Laboratory, University of Oxford)

  • Christiane Schaffitzel

    (European Molecular Biology Laboratory, Grenoble Outstation
    Unit for Virus Host-Cell Interactions, University Grenoble Alpes-EMBL-CNRS)

  • Juan Zou

    (Wellcome Trust Centre for Cell Biology, University of Edinburgh)

  • Matthias Haffke

    (European Molecular Biology Laboratory, Grenoble Outstation
    Unit for Virus Host-Cell Interactions, University Grenoble Alpes-EMBL-CNRS)

  • Juri Rappsilber

    (Wellcome Trust Centre for Cell Biology, University of Edinburgh
    Institute of Bioanalytics, Technische Universität Berlin)

  • Carol V. Robinson

    (Chemistry Research Laboratory, University of Oxford)

  • Patrick Schultz

    (Institut de Génétique et de Biologie Moléculaire et Cellulaire)

  • Laszlo Tora

    (Cellular Signaling and Nuclear Dynamics Program, Institut de Génétique et de Biologie Moléculaire et Cellulaire)

  • Imre Berger

    (European Molecular Biology Laboratory, Grenoble Outstation
    Unit for Virus Host-Cell Interactions, University Grenoble Alpes-EMBL-CNRS
    School of Biochemistry, Bristol University)

Abstract

General transcription factor TFIID is a cornerstone of RNA polymerase II transcription initiation in eukaryotic cells. How human TFIID—a megadalton-sized multiprotein complex composed of the TATA-binding protein (TBP) and 13 TBP-associated factors (TAFs)—assembles into a functional transcription factor is poorly understood. Here we describe a heterotrimeric TFIID subcomplex consisting of the TAF2, TAF8 and TAF10 proteins, which assembles in the cytoplasm. Using native mass spectrometry, we define the interactions between the TAFs and uncover a central role for TAF8 in nucleating the complex. X-ray crystallography reveals a non-canonical arrangement of the TAF8–TAF10 histone fold domains. TAF2 binds to multiple motifs within the TAF8 C-terminal region, and these interactions dictate TAF2 incorporation into a core–TFIID complex that exists in the nucleus. Our results provide evidence for a stepwise assembly pathway of nuclear holo–TFIID, regulated by nuclear import of preformed cytoplasmic submodules.

Suggested Citation

  • Simon Trowitzsch & Cristina Viola & Elisabeth Scheer & Sascha Conic & Virginie Chavant & Marjorie Fournier & Gabor Papai & Ima-Obong Ebong & Christiane Schaffitzel & Juan Zou & Matthias Haffke & Juri , 2015. "Cytoplasmic TAF2–TAF8–TAF10 complex provides evidence for nuclear holo–TFIID assembly from preformed submodules," Nature Communications, Nature, vol. 6(1), pages 1-14, May.
  • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7011
    DOI: 10.1038/ncomms7011
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