1OR7

Crystal Structure of Escherichia coli sigmaE with the Cytoplasmic Domain of its Anti-sigma RseA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of Escherichia coli sigmaE with the cytoplasmic domain of its anti-sigma RseA.

Campbell, E.A.Tupy, J.L.Gruber, T.M.Wang, S.Sharp, M.M.Gross, C.A.Darst, S.A.

(2003) Mol.Cell 11: 1067-1078


  • PubMed Abstract: 
  • The sigma factors are the key regulators of bacterial transcription. ECF (extracytoplasmic function) sigma's are the largest and most divergent group of sigma(70) family members. ECF sigma's are normally sequestered in an inactive complex by their sp ...

    The sigma factors are the key regulators of bacterial transcription. ECF (extracytoplasmic function) sigma's are the largest and most divergent group of sigma(70) family members. ECF sigma's are normally sequestered in an inactive complex by their specific anti-sigma factor, which often spans the inner membrane. Here, we determined the 2 A resolution crystal structure of the Escherichia coli ECF sigma factor sigma(E) in an inhibitory complex with the cytoplasmic domain of its anti-sigma, RseA. Despite extensive sequence variability, the two major domains of sigma(E) are virtually identical in structure to the corresponding domains of other sigma(70) family members. In combination with a model of the sigma(E) holoenzyme and biochemical data, the structure reveals that RseA functions by sterically occluding the two primary binding determinants on sigma(E) for core RNA polymerase.


    Organizational Affiliation

    Laboratory of Molecular Biophysics, The Rockefeller University, 1230 York Avenue, New York, New York 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA polymerase sigma-E factor
A, B
194Escherichia coli (strain K12)Gene Names: rpoE (sigE)
Find proteins for P0AGB6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AGB6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Sigma-E factor negative regulatory protein
C, F
90Escherichia coli (strain K12)Gene Names: rseA (mclA, yfiJ)
Find proteins for P0AFX7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AFX7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.197 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 140.049α = 90.00
b = 56.901β = 130.51
c = 104.981γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MLPHAREphasing
REFMACrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-04-15
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance