5M3F

Yeast RNA polymerase I elongation complex at 3.8A


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 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

Structure of RNA polymerase I transcribing ribosomal DNA genes.

Neyer, S.Kunz, M.Geiss, C.Hantsche, M.Hodirnau, V.V.Seybert, A.Engel, C.Scheffer, M.P.Cramer, P.Frangakis, A.S.

(2016) Nature 540: 607-610

  • DOI: 10.1038/nature20561
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • RNA polymerase I (Pol I) is a highly processive enzyme that transcribes ribosomal DNA (rDNA) and regulates growth of eukaryotic cells. Crystal structures of free Pol I from the yeast Saccharomyces cerevisiae have revealed dimers of the enzyme stabilized by a 'connector' element and an expanded cleft containing the active centre in an inactive conformation ...

    RNA polymerase I (Pol I) is a highly processive enzyme that transcribes ribosomal DNA (rDNA) and regulates growth of eukaryotic cells. Crystal structures of free Pol I from the yeast Saccharomyces cerevisiae have revealed dimers of the enzyme stabilized by a 'connector' element and an expanded cleft containing the active centre in an inactive conformation. The central bridge helix was unfolded and a Pol-I-specific 'expander' element occupied the DNA-template-binding site. The structure of Pol I in its active transcribing conformation has yet to be determined, whereas structures of Pol II and Pol III have been solved with bound DNA template and RNA transcript. Here we report structures of active transcribing Pol I from yeast solved by two different cryo-electron microscopy approaches. A single-particle structure at 3.8 Å resolution reveals a contracted active centre cleft with bound DNA and RNA, and a narrowed pore beneath the active site that no longer holds the RNA-cleavage-stimulating domain of subunit A12.2. A structure at 29 Å resolution that was determined from cryo-electron tomograms of Pol I enzymes transcribing cellular rDNA confirms contraction of the cleft and reveals that incoming and exiting rDNA enclose an angle of around 150°. The structures suggest a model for the regulation of transcription elongation in which contracted and expanded polymerase conformations are associated with active and inactive states, respectively.


    Organizational Affiliation

    Buchmann Institute for Molecular Life Sciences and Institute for Biophysics, Goethe University Frankfurt, Max-von-Laue Str. 15, Frankfurt 60438, Germany.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase I subunit RPA190A1664Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPA190RPA1RRN1YOR341WO6276
EC: 2.7.7.6
Find proteins for P10964 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I and III subunit RPAC1C335Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPC40RPC5YPR110CP8283.18
Find proteins for P07703 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC1E215Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB5RPA7RPC9YBR154CYBR1204
Find proteins for P20434 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC2F155Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPO26RPB6YPR187WP9677.8
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC3H146Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB8YOR224CYOR50-14
Find proteins for P20436 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase I subunit RPA12I125Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPA12RRN4YJR063WJ1747
Find proteins for P32529 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC5J70Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPB10YOR210W
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I and III subunit RPAC2K142Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPC19YNL113WN1937
Find proteins for P28000 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerases I, II, and III subunit RPABC4L70Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPC10RPB12YHR143W-AYHR143BW
Find proteins for P40422 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase I subunit RPA49M415Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPA49RRN13YNL248CN0880
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase I subunit RPA34N233Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPA34YJL148WJ0637
Find proteins for P47006 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase I subunit RPA14D137Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPA14YDR156WYD8358.11
Find proteins for P50106 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase I subunit RPA43G326Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPA43RRN12YOR340CO6271
Find proteins for P46669 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA-directed RNA polymerase I subunit RPA135B1203Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RPA135RPA2RRN2SRP3YPR010CYP9531.03C
EC: 2.7.7.6
Find proteins for P22138 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Entity ID: 11
MoleculeChainsLengthOrganism
template DNAT39Saccharomyces cerevisiae

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Entity ID: 12
MoleculeChainsLengthOrganism
non-template DNAU39Saccharomyces cerevisiae
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Entity ID: 13
MoleculeChainsLengthOrganism
RNAR20Saccharomyces cerevisiae
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
ZN
Query on ZN

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A, B, I, J, L
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-11-23
    Type: Initial release
  • Version 1.1: 2016-12-28
    Changes: Database references
  • Version 1.2: 2018-10-24
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.3: 2019-12-11
    Changes: Other