3PGS

Phe3Gly mutant of EcFadL


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

From the Cover: Ligand-gated diffusion across the bacterial outer membrane.

Lepore, B.W.Indic, M.Pham, H.Hearn, E.M.Patel, D.R.van den Berg, B.

(2011) Proc Natl Acad Sci U S A 108: 10121-10126

  • DOI: 10.1073/pnas.1018532108
  • Primary Citation of Related Structures:  
    2R89, 2R8A, 3PF1, 3PGR, 3PGS, 3PGU

  • PubMed Abstract: 
  • Ligand-gated channels, in which a substrate transport pathway is formed as a result of the binding of a small-molecule chemical messenger, constitute a diverse class of membrane proteins with important functions in prokaryotic and eukaryotic organisms. Despite their widespread nature, no ligand-gated channels have yet been found within the outer membrane (OM) of Gram-negative bacteria ...

    Ligand-gated channels, in which a substrate transport pathway is formed as a result of the binding of a small-molecule chemical messenger, constitute a diverse class of membrane proteins with important functions in prokaryotic and eukaryotic organisms. Despite their widespread nature, no ligand-gated channels have yet been found within the outer membrane (OM) of Gram-negative bacteria. Here we show, using in vivo transport assays, intrinsic tryptophan fluorescence and X-ray crystallography, that high-affinity (submicromolar) substrate binding to the OM long-chain fatty acid transporter FadL from Escherichia coli causes conformational changes in the N terminus that open up a channel for substrate diffusion. The OM long-chain fatty acid transporter FadL from E. coli is a unique paradigm for OM diffusion-driven transport, in which ligand gating within a β-barrel membrane protein is a prerequisite for channel formation.


    Organizational Affiliation

    University of Massachusetts Medical School, Program in Molecular Medicine, 373 Plantation Street, Worcester, MA 01605, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Long-chain fatty acid transport proteinA, B427Escherichia coli K-12Mutation(s): 1 
Gene Names: b2344fadLJW2341ttr
Membrane Entity: Yes 
UniProt
Find proteins for P10384 (Escherichia coli (strain K12))
Explore P10384 
Go to UniProtKB:  P10384
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
2PE
Query on 2PE

Download Ideal Coordinates CCD File 
BA [auth B]NONAETHYLENE GLYCOL
C18 H38 O10
YZUUTMGDONTGTN-UHFFFAOYSA-N
 Ligand Interaction
C8E (Subject of Investigation/LOI)
Query on C8E

Download Ideal Coordinates CCD File 
AA [auth B] , D [auth A] , E [auth A] , M [auth A] , N [auth A] , P [auth A] , Q [auth A] , R [auth A] , 
AA [auth B], D [auth A], E [auth A], M [auth A], N [auth A], P [auth A], Q [auth A], R [auth A], S [auth A], V [auth B], W [auth B], X [auth B], Z [auth B]
(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE
C16 H34 O5
FEOZZFHAVXYAMB-UHFFFAOYSA-N
 Ligand Interaction
LDA (Subject of Investigation/LOI)
Query on LDA

Download Ideal Coordinates CCD File 
F [auth A] , G [auth A] , H [auth A] , I [auth A] , J [auth A] , K [auth A] , L [auth A] , T [auth B] , 
F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], T [auth B], U [auth B]
LAURYL DIMETHYLAMINE-N-OXIDE
C14 H31 N O
SYELZBGXAIXKHU-UHFFFAOYSA-N
 Ligand Interaction
ACT
Query on ACT

Download Ideal Coordinates CCD File 
O [auth A], Y [auth B]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.068α = 90
b = 147.513β = 90
c = 151.092γ = 90
Software Package:
Software NamePurpose
CBASSdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-05-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance