1BDF

STRUCTURE OF ESCHERICHIA COLI RNA POLYMERASE ALPHA SUBUNIT N-TERMINAL DOMAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 

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This is version 1.2 of the entry. See complete history


Literature

Structure of the Escherichia coli RNA polymerase alpha subunit amino-terminal domain.

Zhang, G.Darst, S.A.

(1998) Science 281: 262-266

  • DOI: 10.1126/science.281.5374.262
  • Primary Citation of Related Structures:  
    1BDF

  • PubMed Abstract: 
  • The 2.5 angstrom resolution x-ray crystal structure of the Escherichia coli RNA polymerase (RNAP) alpha subunit amino-terminal domain (alphaNTD), which is necessary and sufficient to dimerize and assemble the other RNAP subunits into a transcriptionally active enzyme and contains all of the sequence elements conserved among eukaryotic alpha homologs, has been determined ...

    The 2.5 angstrom resolution x-ray crystal structure of the Escherichia coli RNA polymerase (RNAP) alpha subunit amino-terminal domain (alphaNTD), which is necessary and sufficient to dimerize and assemble the other RNAP subunits into a transcriptionally active enzyme and contains all of the sequence elements conserved among eukaryotic alpha homologs, has been determined. The alphaNTD monomer comprises two distinct, flexibly linked domains, only one of which participates in the dimer interface. In the alphaNTD dimer, a pair of helices from one monomer interact with the cognate helices of the other to form an extensive hydrophobic core. All of the determinants for interactions with the other RNAP subunits lie on one face of the alphaNTD dimer. Sequence alignments, combined with secondary-structure predictions, support proposals that a heterodimer of the eukaryotic RNAP subunits related to Saccharomyces cerevisiae Rpb3 and Rpb11 plays the role of the alphaNTD dimer in prokaryotic RNAP.


    Organizational Affiliation

    Rockefeller University, 1230 York Avenue, New York, NY 10021, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA POLYMERASE ALPHA SUBUNITA, B, C, D235Escherichia coliMutation(s): 1 
EC: 2.7.7.6
UniProt
Find proteins for P0A7Z4 (Escherichia coli (strain K12))
Explore P0A7Z4 
Go to UniProtKB:  P0A7Z4
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.225 
  • R-Value Observed: 0.225 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.2α = 90
b = 117.2β = 90
c = 350.4γ = 120
Software Package:
Software NamePurpose
PHASESphasing
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 1998-05-08 
  • Released Date: 1999-05-11 
  • Deposition Author(s): Zhang, G., Darst, S.A.

Revision History  (Full details and data files)

  • Version 1.0: 1999-05-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance