3IPR

Crystal structure of the Enterococcus faecalis gluconate specific EIIA phosphotransferase system component


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.213 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structure of the Enterococcus faecalis EIIA(gnt) PTS component.

Reinelt, S.Koch, B.Hothorn, M.Hengstenberg, W.Welti, S.Scheffzek, K.

(2009) Biochem Biophys Res Commun 388: 626-629

  • DOI: https://doi.org/10.1016/j.bbrc.2009.08.054
  • Primary Citation of Related Structures:  
    3IPR

  • PubMed Abstract: 

    In Eubacteria, the utilization of a number of extracellular carbohydrates is mediated by sugar specific phosphoenolepyruvate (PEP) dependent sugar phosphotransferase systems (PTSs), which simultaneously import und phosphorylate their target sugars. Here, we report the crystal structure of the EIIA(gnt) component of the so far little investigated Enterococcus faecalis gluconate specific PTS. The crystal structure shows a tightly interacting dimer of EIIA(gnt) which is structurally similar to the related EIIA(man) from Escherichia coli. Homology modeling of E. faecalis HPr, EIIB(man) and their complexes with EIIA(man) suggests that despite moderate sequence identity between EIIA(man) and EIIA(gnt), the active sites closely match the situation observed in the E. coli system with His-9 of EIIA(gnt) being the likely phosphoryl group carrier. We therefore propose that the phosphoryl transfer reactions involving EIIA(gnt) proceed according to a mechanism analog to the one described for E. coli EIIA(man).


  • Organizational Affiliation

    European Molecular Biology Laboratory, Structural and Computational Biology Unit, Meyerhofstrasse 1, 69117 Heidelberg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PTS system, IIA component
A, B, C, D, E
A, B, C, D, E, F
150Enterococcus faecalisMutation(s): 0 
Gene Names: EF_3136gntF
UniProt
Find proteins for Q82ZC8 (Enterococcus faecalis (strain ATCC 700802 / V583))
Explore Q82ZC8 
Go to UniProtKB:  Q82ZC8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ82ZC8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.213 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 175.68α = 90
b = 69.4β = 106.53
c = 80.22γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
EPMRphasing
CNSrefinement
PDB_EXTRACTdata extraction
ADSCdata collection

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-09-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description