7AOD

Schizosaccharomyces pombe RNA polymerase I (dimer)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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Literature

Conserved strategies of RNA polymerase I hibernation and activation.

Heiss, F.B.Daiss, J.L.Becker, P.Engel, C.

(2021) Nat Commun 12: 758-758

  • DOI: https://doi.org/10.1038/s41467-021-21031-8
  • Primary Citation of Related Structures:  
    7AOC, 7AOD, 7AOE

  • PubMed Abstract: 

    RNA polymerase (Pol) I transcribes the ribosomal RNA precursor in all eukaryotes. The mechanisms 'activation by cleft contraction' and 'hibernation by dimerization' are unique to the regulation of this enzyme, but structure-function analysis is limited to baker's yeast. To understand whether regulation by such strategies is specific to this model organism or conserved among species, we solve three cryo-EM structures of Pol I from Schizosaccharomyces pombe in different functional states. Comparative analysis of structural models derived from high-resolution reconstructions shows that activation is accomplished by a conserved contraction of the active center cleft. In contrast to current beliefs, we find that dimerization of the S. pombe polymerase is also possible. This dimerization is achieved independent of the 'connector' domain but relies on two previously undescribed interfaces. Our analyses highlight the divergent nature of Pol I transcription systems from their counterparts and suggest conservation of regulatory mechanisms among organisms.


  • Organizational Affiliation

    Regensburg Center for Biochemistry, University of Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase I subunit rpa1
A, M
1,689Schizosaccharomyces pombe 972h-Mutation(s): 0 
EC: 2.7.7.6
UniProt
Find proteins for P15398 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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UniProt GroupP15398
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Probable DNA-directed RNA polymerase I subunit RPA2
B, N
1,174Schizosaccharomyces pombe 972h-Mutation(s): 0 
EC: 2.7.7.6
UniProt
Find proteins for Q9P7X8 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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UniProt GroupQ9P7X8
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I and III subunit RPAC1
C, O
348Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for O94616 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase I subunit rpa14
D, P
147Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for Q9P7P1 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC1
E, Q
210Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for Q09191 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC2
F, R
142Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for P36595 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase I subunit rpa43
G, S
173Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for O43036 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC3
H, T
125Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for Q92399 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerase I subunit RPA12
I, U
119Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for O94703 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC5
J, V
71Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for O13877 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I and III subunit RPAC2
K, W
125Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for Q09177 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed RNA polymerases I, II, and III subunit RPABC4
L, X
63Schizosaccharomyces pombe 972h-Mutation(s): 0 
UniProt
Find proteins for P48011 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
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Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
AA [auth B]
BA [auth I]
CA [auth J]
DA [auth L]
EA [auth M]
AA [auth B],
BA [auth I],
CA [auth J],
DA [auth L],
EA [auth M],
FA [auth M],
GA [auth N],
HA [auth U],
IA [auth V],
JA [auth X],
Y [auth A],
Z [auth A]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanySFB 960 (TP-A8)
German Research Foundation (DFG)GermanyEN 1204/1-1

Revision History  (Full details and data files)

  • Version 1.0: 2021-02-24
    Type: Initial release