1BDF

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


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


  • 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 transcriptiona ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA POLYMERASE ALPHA SUBUNIT
A, B, C, D
235Escherichia coli (strain K12)Gene Names: rpoA (pez, phs, sez)
EC: 2.7.7.6
Find proteins for P0A7Z4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7Z4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.225 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 117.200α = 90.00
b = 117.200β = 90.00
c = 350.400γ = 120.00
Software Package:
Software NamePurpose
X-PLORphasing
DENZOdata reduction
X-PLORmodel building
SCALEPACKdata scaling
PHASESphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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

Revision History 

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