2BJV

Crystal Structure of PspF(1-275) R168A mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural Insights Into the Activity of Enhancer-Binding Proteins

Rappas, M.Schumacher, J.Beuron, F.Niwa, H.Bordes, P.Wigneshweraraj, S.Keetch, C.A.Robinson, C.V.Buck, M.Zhang, X.

(2005) Science 307: 1972

  • DOI: 10.1126/science.1105932
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Activators of bacterial sigma54-RNA polymerase holoenzyme are mechanochemical proteins that use adenosine triphosphate (ATP) hydrolysis to activate transcription. We have determined by cryogenic electron microscopy (cryo-EM) a 20 angstrom resolution ...

    Activators of bacterial sigma54-RNA polymerase holoenzyme are mechanochemical proteins that use adenosine triphosphate (ATP) hydrolysis to activate transcription. We have determined by cryogenic electron microscopy (cryo-EM) a 20 angstrom resolution structure of an activator, phage shock protein F [PspF(1-275)], which is bound to an ATP transition state analog in complex with its basal factor, sigma54. By fitting the crystal structure of PspF(1-275) at 1.75 angstroms into the EM map, we identified two loops involved in binding sigma54. Comparing enhancer-binding structures in different nucleotide states and mutational analysis led us to propose nucleotide-dependent conformational changes that free the loops for association with sigma54.


    Organizational Affiliation

    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PSP OPERON TRANSCRIPTIONAL ACTIVATOR
A
265Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: pspF (ycjB)
Find proteins for P37344 (Escherichia coli (strain K12))
Go to UniProtKB:  P37344
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.172 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 113.613α = 90.00
b = 113.613β = 90.00
c = 39.145γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
SCALEPACKdata scaling
DENZOdata reduction
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-03-31
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-08-30
    Type: Data collection