5OF4 image
Entry Detail
PDB ID:
5OF4
EMDB ID:
Keywords:
Title:
The cryo-EM structure of human TFIIH
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2017-07-10
Release Date:
2017-09-13
Method Details:
Experimental Method:
Resolution:
4.40 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:TFIIH basal transcription factor complex helicase XPB subunit,XPB,TFIIH basal transcription factor complex helicase XPB subunit
Chain IDs:A
Chain Length:553
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:TFIIH basal transcription factor complex helicase XPD subunit
Chain IDs:B
Chain Length:760
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:General transcription factor IIH subunit 4,p52,General transcription factor IIH subunit 4
Chain IDs:C (auth: D)
Chain Length:85
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:General transcription factor IIH subunit 2
Chain IDs:D (auth: E)
Chain Length:395
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:General transcription factor IIH subunit 3
Chain IDs:E (auth: F)
Chain Length:308
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:General transcription factor IIH subunit 5
Chain IDs:F (auth: G)
Chain Length:71
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:MAT1
Chain IDs:G (auth: H)
Chain Length:124
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Unassigned secondary structure elements (XPB NTE region)
Chain IDs:J (auth: X)
Chain Length:78
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Unassigned secondary structure elements (p52 region)
Chain IDs:I (auth: Y)
Chain Length:232
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Unassigned secondary structure elements.
Chain IDs:H (auth: Z)
Chain Length:270
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
The cryo-electron microscopy structure of human transcription factor IIH.
Nature 549 414 417 (2017)
PMID: 28902838 DOI: 10.1038/nature23903

Abstact

Human transcription factor IIH (TFIIH) is part of the general transcriptional machinery required by RNA polymerase II for the initiation of eukaryotic gene transcription. Composed of ten subunits that add up to a molecular mass of about 500 kDa, TFIIH is also essential for nucleotide excision repair. The seven-subunit TFIIH core complex formed by XPB, XPD, p62, p52, p44, p34, and p8 is competent for DNA repair, while the CDK-activating kinase subcomplex, which includes the kinase activity of CDK7 as well as the cyclin H and MAT1 subunits, is additionally required for transcription initiation. Mutations in the TFIIH subunits XPB, XPD, and p8 lead to severe premature ageing and cancer propensity in the genetic diseases xeroderma pigmentosum, Cockayne syndrome, and trichothiodystrophy, highlighting the importance of TFIIH for cellular physiology. Here we present the cryo-electron microscopy structure of human TFIIH at 4.4 Å resolution. The structure reveals the molecular architecture of the TFIIH core complex, the detailed structures of its constituent XPB and XPD ATPases, and how the core and kinase subcomplexes of TFIIH are connected. Additionally, our structure provides insight into the conformational dynamics of TFIIH and the regulation of its activity.

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Primary Citation of related structures