6YJ6

Structure of the TFIIIC subcomplex tauA


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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This is version 1.1 of the entry. See complete history


Literature

Structure of the TFIIIC subcomplex tau A provides insights into RNA polymerase III pre-initiation complex formation.

Vorlander, M.K.Jungblut, A.Karius, K.Baudin, F.Grotsch, H.Kosinski, J.Muller, C.W.

(2020) Nat Commun 11: 4905-4905

  • DOI: 10.1038/s41467-020-18707-y
  • Primary Citation of Related Structures:  
    6YJ6

  • PubMed Abstract: 
  • Transcription factor (TF) IIIC is a conserved eukaryotic six-subunit protein complex with dual function. It serves as a general TF for most RNA polymerase (Pol) III genes by recruiting TFIIIB, but it is also involved in chromatin organization and regulation of Pol II genes through interaction with CTCF and condensin II ...

    Transcription factor (TF) IIIC is a conserved eukaryotic six-subunit protein complex with dual function. It serves as a general TF for most RNA polymerase (Pol) III genes by recruiting TFIIIB, but it is also involved in chromatin organization and regulation of Pol II genes through interaction with CTCF and condensin II. Here, we report the structure of the S. cerevisiae TFIIIC subcomplex τA, which contains the most conserved subunits of TFIIIC and is responsible for recruitment of TFIIIB and transcription start site (TSS) selection at Pol III genes. We show that τA binding to its promoter is auto-inhibited by a disordered acidic tail of subunit τ95. We further provide a negative-stain reconstruction of τA bound to the TFIIIB subunits Brf1 and TBP. This shows that a ruler element in τA achieves positioning of TFIIIB upstream of the TSS, and suggests remodeling of the complex during assembly of TFIIIB by TFIIIC.


    Organizational Affiliation

    European Molecular Biology Laboratory (EMBL), Structural and Computational Biology Unit, Meyerhofstrasse 1, 69117, Heidelberg, Germany. christoph.mueller@embl.de.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription factor tau 131 kDa subunit A1029Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: TFC4PCF1YGR047C
Find proteins for P33339 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P33339
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription factor tau 95 kDa subunit,Transcription factor tau 95 kDa subunit B685Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: TFC1YBR123CYBR0919
Find proteins for P32367 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32367 
Go to UniProtKB:  P32367
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription factor tau 55 kDa subunit C435Saccharomyces cerevisiaeMutation(s): 0 
Gene Names: TFC7YOR110WO3234YOR3234w
Find proteins for Q12415 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q12415 
Go to UniProtKB:  Q12415
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-09-16
    Type: Initial release
  • Version 1.1: 2020-10-14
    Changes: Database references