1SIG

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.218 
  • R-Value Observed: 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

  • DOI: 10.1016/s0092-8674(00)81329-x
  • Primary Citation of Related Structures:  
    1SIG

  • 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 helix, are exposed residues that interact with the -10 consensus promoter element (the Pribnow box), including four aromatic residues involved in promoter melting ...

    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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA POLYMERASE PRIMARY SIGMA FACTORA339Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoDaltb3067JW3039
UniProt
Find proteins for P00579 (Escherichia coli (strain K12))
Explore P00579 
Go to UniProtKB:  P00579
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00579
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.229α = 90
b = 79.229β = 90
c = 134.06γ = 90
Software Package:
Software NamePurpose
MLPHAREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

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