1TF5

Crystal structure of SecA in an open conformation from Bacillus Subtilis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.18 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.241 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A large conformational change of the translocation ATPase SecA.

Osborne, A.R.Clemons Jr., W.M.Rapoport, T.A.

(2004) Proc.Natl.Acad.Sci.USA 101: 10937-10942

  • DOI: 10.1073/pnas.0401742101
  • Primary Citation of Related Structures:  1TF2

  • PubMed Abstract: 
  • The ATPase SecA mediates the posttranslational translocation of a wide range of polypeptide substrates through the SecY channel in the cytoplasmic membrane of bacteria. We have determined the crystal structure of a monomeric form of Bacillus subtilis ...

    The ATPase SecA mediates the posttranslational translocation of a wide range of polypeptide substrates through the SecY channel in the cytoplasmic membrane of bacteria. We have determined the crystal structure of a monomeric form of Bacillus subtilis SecA at a 2.2-A resolution. A comparison with the previously determined structures of SecA reveals a nucleotide-independent, large conformational change that opens a deep groove similar to that in other proteins that interact with diverse polypeptides. We propose that the open form of SecA represents an activated state.


    Organizational Affiliation

    Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Preprotein translocase secA subunit
A
844Bacillus subtilis (strain 168)Gene Names: secA (div+)
Find proteins for P28366 (Bacillus subtilis (strain 168))
Go to UniProtKB:  P28366
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.18 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.241 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 149.232α = 90.00
b = 107.189β = 94.96
c = 72.054γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
AMoREphasing
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-03
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance