6F41

RNA Polymerase III initially transcribing complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular mechanism of promoter opening by RNA polymerase III.

Vorlander, M.K.Khatter, H.Wetzel, R.Hagen, W.J.H.Muller, C.W.

(2018) Nature 553: 295-300

  • DOI: https://doi.org/10.1038/nature25440
  • Primary Citation of Related Structures:  
    6F40, 6F41, 6F42, 6F44

  • PubMed Abstract: 

    RNA polymerase III (Pol III) and transcription factor IIIB (TFIIIB) assemble together on different promoter types to initiate the transcription of small, structured RNAs. Here we present structures of Pol III preinitiation complexes, comprising the 17-subunit Pol III and the heterotrimeric transcription factor TFIIIB, bound to a natural promoter in different functional states. Electron cryo-microscopy reconstructions, varying from 3.7 Å to 5.5 Å resolution, include two early intermediates in which the DNA duplex is closed, an open DNA complex, and an initially transcribing complex with RNA in the active site. Our structures reveal an extremely tight, multivalent interaction between TFIIIB and promoter DNA, and explain how TFIIIB recruits Pol III. Together, TFIIIB and Pol III subunit C37 activate the intrinsic transcription factor-like activity of the Pol III-specific heterotrimer to initiate the melting of double-stranded DNA, in a mechanism similar to that of the Pol II system.


  • Organizational Affiliation

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


Macromolecules

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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC11,460Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 2.7.7.6
UniProt
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC21,149Saccharomyces cerevisiae S288CMutation(s): 0 
EC: 2.7.7.6
UniProt
Find proteins for P22276 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I and III subunit RPAC1335Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC9161Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P47076 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC1215Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC2155Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC8212Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC3146Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC10110Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC570Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I and III subunit RPAC2142Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC470Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC5282Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC4422Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC3654Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC6317Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase III subunit RPC7251Saccharomyces cerevisiae S288CMutation(s): 0 
UniProt
Find proteins for P17890 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
TATA-box-binding proteinR [auth U]240Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SPT15BTF1TBP1YER148W
UniProt
Find proteins for P13393 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription factor IIIB 70 kDa subunitS [auth V]596Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: BRF1PCF4TDS4YGR246C
UniProt
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription factor TFIIIB component B''T [auth W]594Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: BDP1TFC5YNL039WN2682
UniProt
Find proteins for P46678 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 21
MoleculeChains LengthOrganismImage
RNAU [auth R]6Saccharomyces cerevisiae S288C
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Entity ID: 22
MoleculeChains LengthOrganismImage
Non-Template DNAV [auth X]81Saccharomyces cerevisiae S288C
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Entity ID: 23
MoleculeChains LengthOrganismImage
Template-DNAW [auth Y]81Saccharomyces cerevisiae S288C
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.30 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION2.0
MODEL REFINEMENTPHENIX

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research CouncilERC-2013-AdG340964-POL1PIC

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-17
    Type: Initial release
  • Version 1.1: 2018-01-31
    Changes: Database references, Refinement description
  • Version 1.2: 2019-12-11
    Changes: Other