1SIG

CRYSTAL STRUCTURE OF A SIGMA70 SUBUNIT FRAGMENT FROM ESCHERICHIA COLI RNA POLYMERASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a sigma 70 subunit fragment from E. coli RNA polymerase.

Malhotra, A.Severinova, E.Darst, S.A.

(1996) Cell 87: 127-136


  • PubMed Abstract: 
  • The 2.6 A crystal structure of a fragment of the sigma 70 promoter specificity subunit of E. coli RNA polymerase is described. Residues involved in core RNA polymerase binding lie on one face of the structure. On the opposite face, aligned along one ...

    The 2.6 A crystal structure of a fragment of the sigma 70 promoter specificity subunit of E. coli RNA polymerase is described. Residues involved in core RNA polymerase binding lie on one face of the structure. On the opposite face, aligned along one helix, are exposed residues that interact with the -10 consensus promoter element (the Pribnow box), including four aromatic residues involved in promoter melting. The structure suggests one way in which DNA interactions may be inhibited in the absence of RNA polymerase and provides a framework for the interpretation of a large number of genetic and biochemical analyses.


    Related Citations: 
    • Domain Organization of the Escherichia Coli RNA Polymerase Sigma 70 Subunit
      Severinova, E.,Severinov, K.,Fenyo, D.,Marr, M.,Brody, E.N.,Roberts, J.W.,Chait, B.T.,Darst, S.A.
      (1996) J.Mol.Biol. 263: 637


    Organizational Affiliation

    Rockefeller University, New York, New York 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA POLYMERASE PRIMARY SIGMA FACTOR
A
339Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpoD (alt)
Find proteins for P00579 (Escherichia coli (strain K12))
Go to UniProtKB:  P00579
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.218 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 79.229α = 90.00
b = 79.229β = 90.00
c = 134.060γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
DENZOdata reduction
X-PLORrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-05-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance