4C2M

Structure of RNA polymerase I at 2.8 A resolution

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.170 

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This is version 1.2 of the entry. See complete history. 


Literature

RNA Polymerase I Structure and Transcription Regulation.

Engel, C., Sainsbury, S., Cheung, A.C., Kostrewa, D., Cramer, P.

(2013) Nature 502: 502

  • DOI: 10.1038/nature12712
  • Primary Citation of Related Structures:  
    4C2M

  • PubMed Abstract: 

    • Transcription of ribosomal RNA by RNA polymerase (Pol) I initiates ribosome biogenesis and regulates eukaryotic cell growth. The crystal structure of Pol I from the yeast Saccharomyces cerevisiae at 2.8 Å resolution reveals all 14 subunits of the 590-kilodalton enzyme, and shows differences to Pol II ...

    Transcription of ribosomal RNA by RNA polymerase (Pol) I initiates ribosome biogenesis and regulates eukaryotic cell growth. The crystal structure of Pol I from the yeast Saccharomyces cerevisiae at 2.8 Å resolution reveals all 14 subunits of the 590-kilodalton enzyme, and shows differences to Pol II. An 'expander' element occupies the DNA template site and stabilizes an expanded active centre cleft with an unwound bridge helix. A 'connector' element invades the cleft of an adjacent polymerase and stabilizes an inactive polymerase dimer. The connector and expander must detach during Pol I activation to enable transcription initiation and cleft contraction by convergent movement of the polymerase 'core' and 'shelf' modules. Conversion between an inactive expanded and an active contracted polymerase state may generally underlie transcription. Regulatory factors can modulate the core-shelf interface that includes a 'composite' active site for RNA chain initiation, elongation, proofreading and termination.

    Organizational Affiliation: 

    Gene Center and Department of Biochemistry, Center for Integrated Protein Science Munich (CIPSM), Ludwig-Maximilians-Universität München, Feodor-Lynen-Str. 25, 81377 Munich, Germany.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4A [auth 1], P [auth L]70Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA49B [auth 2], Q [auth M]415Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA34C [auth 3], R [auth N]233Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA43D [auth 4], K [auth G], S [auth O], Z [auth V]326Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA190E [auth A], T [auth P]1664Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA135F [auth B], U [auth Q]1203Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASES I AND III SUBUNIT RPAC1G [auth C], V [auth R]335Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 8
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DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA14H [auth D], W [auth S]137Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1I [auth E], X [auth T]215Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2J [auth F], Y [auth U]155Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3L [auth H], AA [auth W]146Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASE I SUBUNIT RPA12M [auth I], BA [auth X]125Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5N [auth J], CA [auth Y]70Saccharomyces cerevisiaeMutation(s): 0 
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-DIRECTED RNA POLYMERASES I AND III SUBUNIT RPAC2O [auth K], DA [auth Z]142Saccharomyces cerevisiaeMutation(s): 0 
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Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
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HA [auth B], PA [auth Q]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
ZN
Query on ZN
Download Ideal Coordinates CCD File 
EA [auth 1] , FA [auth A] , GA [auth A] , IA [auth B] , JA [auth I] , KA [auth I] , LA [auth J] , MA [auth L] , 
EA [auth 1], FA [auth A], GA [auth A], IA [auth B], JA [auth I], KA [auth I], LA [auth J], MA [auth L], NA [auth P], OA [auth P], QA [auth Q], RA [auth X], SA [auth X], TA [auth Y]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.170 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 122.74α = 108.06
b = 139.02β = 95.4
c = 209.55γ = 93.85
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling
autoSHARPphasing
PARROTphasing
PHENIXrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-10-23
    Type: Initial release
  • Version 1.1: 2013-11-06
    Changes: Database references
  • Version 1.2: 2015-08-19
    Changes: Derived calculations