1OR7

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 

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

  • DOI: 10.1016/s1097-2765(03)00148-5
  • Primary Citation of Related Structures:  
    1OR7

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA polymerase sigma-E factorAB194Escherichia coliMutation(s): 0 
Gene Names: RPOE OR SIGE OR B2573 OR C3097 OR Z3855 OR ECS3439 OR SF2635
Find proteins for P0AGB6 (Escherichia coli (strain K12))
Explore P0AGB6 
Go to UniProtKB:  P0AGB6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Sigma-E factor negative regulatory proteinCF90Escherichia coliMutation(s): 0 
Gene Names: RSEA OR MCLA OR B2572 OR C3096
Find proteins for P0AFX7 (Escherichia coli (strain K12))
Explore P0AFX7 
Go to UniProtKB:  P0AFX7
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.197 
  • R-Value Observed: 0.199 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 140.049α = 90
b = 56.901β = 130.51
c = 104.981γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

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