E.coli DmsD

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.197 

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This is version 1.3 of the entry. See complete history


Structure of the twin-arginine signal-binding protein DmsD from Escherichia coli.

Ramasamy, S.K.Clemons, W.M.

(2009) Acta Crystallogr Sect F Struct Biol Cryst Commun 65: 746-750

  • DOI: https://doi.org/10.1107/S1744309109023811
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The translocation of folded proteins via the twin-arginine translocation (Tat) pathway is regulated to prevent the futile export of inactive substrate. DmsD is part of a class of cytoplasmic chaperones that play a role in preventing certain redox proteins from premature transport. DmsD from Escherichia coli has been crystallized in space group P4(1)2(1)2, with unit-cell parameters a = b = 97.45, c = 210.04 A, in the presence of a small peptide. The structure has been solved by molecular replacement to a resolution of 2.4 A and refined to an R factor of 19.4%. There are four molecules in the asymmetric unit that may mimic a higher order structure in vivo. There appears to be density for the peptide in a predicted binding pocket, which lends support to its role as the signal-recognition surface for this class of proteins.

  • Organizational Affiliation

    Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Twin-arginine leader-binding protein dmsD
A, B, C, D
208Escherichia coli K-12Mutation(s): 0 
Gene Names: dmsDynfIb1591JW5262
Find proteins for P69853 (Escherichia coli (strain K12))
Explore P69853 
Go to UniProtKB:  P69853
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP69853
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.197 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.449α = 90
b = 97.449β = 90
c = 210.042γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
APEXdata collection

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-04-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2011-12-14
    Changes: Database references
  • Version 1.3: 2017-10-25
    Changes: Refinement description