8CLL

Structural insights into human TFIIIC promoter recognition


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural insights into human TFIIIC promoter recognition.

Seifert-Davila, W.Girbig, M.Hauptmann, L.Hoffmann, T.Eustermann, S.Muller, C.W.

(2023) Sci Adv 9: eadh2019-eadh2019

  • DOI: https://doi.org/10.1126/sciadv.adh2019
  • Primary Citation of Related Structures:  
    8CLI, 8CLJ, 8CLK, 8CLL

  • PubMed Abstract: 

    Transcription factor (TF) IIIC recruits RNA polymerase (Pol) III to most of its target genes. Recognition of intragenic A- and B-box motifs in transfer RNA (tRNA) genes by TFIIIC modules τA and τB is the first critical step for tRNA synthesis but is mechanistically poorly understood. Here, we report cryo-electron microscopy structures of the six-subunit human TFIIIC complex unbound and bound to a tRNA gene. The τB module recognizes the B-box via DNA shape and sequence readout through the assembly of multiple winged-helix domains. TFIIIC220 forms an integral part of both τA and τB connecting the two subcomplexes via a ~550-amino acid residue flexible linker. Our data provide a structural mechanism by which high-affinity B-box recognition anchors TFIIIC to promoter DNA and permits scanning for low-affinity A-boxes and TFIIIB for Pol III activation.


  • Organizational Affiliation

    Structural and Computational Biology Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
General transcription factor 3C polypeptide 1A,
D [auth F]
2,158Homo sapiensMutation(s): 0 
Gene Names: GTF3C1
UniProt & NIH Common Fund Data Resources
Find proteins for Q12789 (Homo sapiens)
Explore Q12789 
Go to UniProtKB:  Q12789
PHAROS:  Q12789
GTEx:  ENSG00000077235 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ12789
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
General transcription factor 3C polypeptide 4B,
E [auth G]
822Homo sapiensMutation(s): 0 
Gene Names: GTF3C4
EC: 2.3.1.48
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UKN8 (Homo sapiens)
Explore Q9UKN8 
Go to UniProtKB:  Q9UKN8
PHAROS:  Q9UKN8
GTEx:  ENSG00000125484 
Entity Groups  
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UniProt GroupQ9UKN8
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
General transcription factor 3C polypeptide 2C,
F [auth H]
925Homo sapiensMutation(s): 0 
Gene Names: GTF3C2KIAA0011
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WUA4 (Homo sapiens)
Explore Q8WUA4 
Go to UniProtKB:  Q8WUA4
PHAROS:  Q8WUA4
GTEx:  ENSG00000115207 
Entity Groups  
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UniProt GroupQ8WUA4
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other governmentGermany--

Revision History  (Full details and data files)

  • Version 1.0: 2023-06-21
    Type: Initial release
  • Version 1.1: 2023-07-05
    Changes: Database references, Structure summary
  • Version 1.2: 2023-07-19
    Changes: Data collection, Database references, Refinement description
  • Version 1.3: 2023-12-20
    Changes: Data collection