4LEP

Structural insights into substrate recognition in proton dependent oligopeptide transporters


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.275 
  • R-Value Observed: 0.277 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural insights into substrate recognition in proton-dependent oligopeptide transporters.

Guettou, F.Quistgaard, E.M.Tresaugues, L.Moberg, P.Jegerschold, C.Zhu, L.Jong, A.J.Nordlund, P.Low, C.

(2013) EMBO Rep 14: 804-810

  • DOI: 10.1038/embor.2013.107
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Short-chain peptides are transported across membranes through promiscuous proton-dependent oligopeptide transporters (POTs)--a subfamily of the major facilitator superfamily (MFS). The human POTs, PEPT1 and PEPT2, are also involved in the absorption ...

    Short-chain peptides are transported across membranes through promiscuous proton-dependent oligopeptide transporters (POTs)--a subfamily of the major facilitator superfamily (MFS). The human POTs, PEPT1 and PEPT2, are also involved in the absorption of various drugs in the gut as well as transport to target cells. Here, we present a structure of an oligomeric POT transporter from Shewanella oneidensis (PepTSo2), which was crystallized in the inward open conformation in complex with the peptidomimetic alafosfalin. All ligand-binding residues are highly conserved and the structural insights presented here are therefore likely to also apply to human POTs.


    Organizational Affiliation

    Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17177 Stockholm, Sweden.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proton:oligopeptide symporter POT family
A, B
523Shewanella oneidensis MR-1Mutation(s): 0 
Gene Names: SO_1277
Find proteins for Q8EHE6 (Shewanella oneidensis (strain MR-1))
Go to UniProtKB:  Q8EHE6
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AFS
Query on AFS

Download CCD File 
A, B
N-[(1R)-1-phosphonoethyl]-L-alaninamide
C5 H13 N2 O4 P
BHAYDBSYOBONRV-IUYQGCFVSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.275 
  • R-Value Observed: 0.277 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 84.24α = 90
b = 107.73β = 90
c = 205.51γ = 90
Software Package:
Software NamePurpose
XDSdata scaling
SHARPphasing
PHENIXrefinement
XDSdata reduction
anisotropydata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-07-10
    Type: Initial release
  • Version 1.1: 2013-08-07
    Changes: Database references
  • Version 1.2: 2013-10-23
    Changes: Database references