FtsA (apo form) from Thermotoga maritima

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 

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This is version 1.4 of the entry. See complete history


Crystal Structure of the Cell Division Protein Ftsa from Thermotoga Maritima

van den Ent, F.Lowe, J.

(2000) EMBO J 19: 5300

  • DOI: https://doi.org/10.1093/emboj/19.20.5300
  • Primary Citation of Related Structures:  
    1E4F, 1E4G

  • PubMed Abstract: 

    Bacterial cell division requires formation of a septal ring. A key step in septum formation is polymerization of FtsZ. FtsA directly interacts with FtsZ and probably targets other proteins to the septum. We have solved the crystal structure of FtsA from Thermotoga maritima in the apo and ATP-bound form. FtsA consists of two domains with the nucleotide-binding site in the interdomain cleft. Both domains have a common core that is also found in the actin family of proteins. Structurally, FtsA is most homologous to actin and heat-shock cognate protein (Hsc70). An important difference between FtsA and the actin family of proteins is the insertion of a subdomain in FtsA. Movement of this subdomain partially encloses a groove, which could bind the C-terminus of FtsZ. FtsZ is the bacterial homologue of tubulin, and the FtsZ ring is functionally similar to the contractile ring in dividing eukaryotic cells. Elucidation of the crystal structure of FtsA shows that another bacterial protein involved in cytokinesis is structurally related to a eukaryotic cytoskeletal protein involved in cytokinesis.

  • Organizational Affiliation

    MRC Laboratory of Molecular Biology, Hills Road, Cambridge, CB2 2QH, UK. fent@mrc-lmb.cam.ac.uk

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CELL DIVISION PROTEIN FTSAA [auth T]419Thermotoga maritimaMutation(s): 0 
Gene Names: FTSA
Find proteins for Q9WZU0 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q9WZU0 
Go to UniProtKB:  Q9WZU0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9WZU0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.62α = 90
b = 53.52β = 93.44
c = 78.31γ = 90
Software Package:
Software NamePurpose

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-10-18
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-01-24
    Changes: Database references, Source and taxonomy, Structure summary
  • Version 1.4: 2024-05-08
    Changes: Data collection, Database references, Other