SufI Protein from Escherichia Coli

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Work: 0.191 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


The Escherichia Coli Cell Division Protein and Model Tat Substrate Sufi (Ftsp) Localizes to the Septal Ring and Has a Multicopper Oxidase-Like Structure.

Tarry, M.Arends, S.J.Roversi, P.Piette, E.Sargent, F.Berks, B.C.Weiss, D.S.Lea, S.M.

(2009) J Mol Biol 386: 504

  • DOI: https://doi.org/10.1016/j.jmb.2008.12.043
  • Primary Citation of Related Structures:  
    2UXT, 2UXV

  • PubMed Abstract: 

    The Escherichia coli protein SufI (FtsP) has recently been proposed to be a component of the cell division apparatus. The SufI protein is also in widespread experimental use as a model substrate in studies of the Tat (twin arginine translocation) protein transport system. We have used SufI-GFP (green fluorescent protein) fusions to show that SufI localizes to the septal ring in the dividing cell. We have also determined the structure of SufI by X-ray crystallography to a resolution of 1.9 A. SufI is structurally related to the multicopper oxidase superfamily but lacks metal cofactors. The structure of SufI suggests it serves a scaffolding rather than an enzymatic role in the septal ring and reveals regions of the protein likely to be involved in the protein-protein interactions required to assemble SufI at the septal ring.

  • Organizational Affiliation

    Department of Biochemistry, University of Oxford, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
451Escherichia coliMutation(s): 0 
Find proteins for P26648 (Escherichia coli (strain K12))
Explore P26648 
Go to UniProtKB:  P26648
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP26648
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Work: 0.191 
  • R-Value Observed: 0.191 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.47α = 90
b = 89.55β = 90
c = 153.63γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-05-13
    Type: Initial release
  • Version 1.1: 2015-04-01
    Changes: Data collection, Derived calculations, Non-polymer description, Other, Version format compliance
  • Version 1.2: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description