2CKZ

X-ray structure of RNA polymerase III subcomplex C17-C25.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural Biology of RNA Polymerase III: Subcomplex C17/-C25 X-Ray Structure and 11-Subunit Enzyme Model

Jasiak, A.J.Armache, K.-J.Martens, B.Jansen, R.-P.Cramer, P.

(2006) Mol Cell 23: 71

  • DOI: 10.1016/j.molcel.2006.05.013
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • We obtained an 11 subunit model of RNA polymerase (Pol) III by combining a homology model of the nine subunit core enzyme with a new X-ray structure of the subcomplex C17/25. Compared to Pol II, Pol III shows a conserved active center for RNA synthes ...

    We obtained an 11 subunit model of RNA polymerase (Pol) III by combining a homology model of the nine subunit core enzyme with a new X-ray structure of the subcomplex C17/25. Compared to Pol II, Pol III shows a conserved active center for RNA synthesis but a structurally different upstream face for specific initiation complex assembly during promoter selection. The Pol III upstream face includes a HRDC domain in subunit C17 that is translated by 35 A and rotated by 150 degrees compared to its Pol II counterpart. The HRDC domain is essential in vivo, folds independently in vitro, and, unlike other HRDC domains, shows no indication of nucleic acid binding. Thus, the HRDC domain is a functional module that could account for the role of C17 in Pol III promoter-specific initiation. During elongation, C17/25 may bind Pol III transcripts emerging from the adjacent exit pore, because the subcomplex binds to tRNA in vitro.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, Gene Center, Ludwig-Maximilians-University of Munich, Feodor-Lynen-Strasse 25, 81377 Munich, Germany.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-DIRECTED RNA POLYMERASE III 18 KD POLYPEPTIDEA, C161Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
Find proteins for P47076 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P47076 
Go to UniProtKB:  P47076
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
DNA-DIRECTED RNA POLYMERASE III 25 KD POLYPEPTIDEB, D218Saccharomyces cerevisiaeMutation(s): 0 
EC: 2.7.7.6
Find proteins for P35718 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P35718 
Go to UniProtKB:  P35718
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.236 
  • R-Value Observed: 0.236 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.23α = 90
b = 138.23β = 90
c = 247.1γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SnBphasing
SOLVEphasing
CNSrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-07-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-07-05
    Changes: Refinement description