4Z7F

Crystal structure of FolT bound with folic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.356 
  • R-Value Work: 0.293 
  • R-Value Observed: 0.299 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structures of FolT in substrate-bound and substrate-released conformations reveal a gating mechanism for ECF transporters

Zhao, Q.Wang, C.C.Wang, C.Y.Guo, H.Bao, Z.H.Zhang, M.H.Zhang, P.

(2015) Nat Commun 6: 7661-7661

  • DOI: 10.1038/ncomms8661
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Energy-coupling factor (ECF) transporters are a new family of ABC transporters that consist of four subunits, two cytoplasmic ATPases EcfA and EcfA' and two transmembrane proteins namely EcfS for substrate-specific binding and EcfT for energy couplin ...

    Energy-coupling factor (ECF) transporters are a new family of ABC transporters that consist of four subunits, two cytoplasmic ATPases EcfA and EcfA' and two transmembrane proteins namely EcfS for substrate-specific binding and EcfT for energy coupling. Here, we report the 3.2-Å resolution crystal structure of the EcfS protein of a folate ECF transporter from Enterococcus faecalis-EfFolT, a close homologue of FolT from Lactobacillus brevis-LbFolT. Structural and biochemical analyses reveal the residues constituting the folate-binding pocket and determining the substrate-binding specificity. Structural comparison of the folate-bound EfFolT with the folate-free LbFolT contained in the holotransporter complex discloses significant conformational change at the L1 loop, and reveals a gating mechanism of ECF transporters in which the L1 loop of EcfS acts as a gate in the substrate binding and release.


    Organizational Affiliation

    National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Folate ECF transporterA, B, C, D, E, F199Enterococcus faecalis V583Mutation(s): 0 
Gene Names: EF_0940
Find proteins for Q837A3 (Enterococcus faecalis (strain ATCC 700802 / V583))
Explore Q837A3 
Go to UniProtKB:  Q837A3
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FOL
Query on FOL

Download CCD File 
A, B, C, D, E, F
FOLIC ACID
C19 H19 N7 O6
OVBPIULPVIDEAO-LBPRGKRZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.356 
  • R-Value Work: 0.293 
  • R-Value Observed: 0.299 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.752α = 90
b = 92.752β = 90
c = 183.445γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-29
    Type: Initial release
  • Version 1.1: 2015-08-05
    Changes: Database references