4LEP

Structural insights into substrate recognition in proton dependent oligopeptide transporters


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.275 

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

  • 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 (strain MR-1)Mutation(s): 0 
Find proteins for Q8EHE6 (Shewanella oneidensis (strain MR-1))
Go to UniProtKB:  Q8EHE6
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
AFS
Query on AFS

Download SDF File 
Download CCD File 
A, B
N-[(1R)-1-phosphonoethyl]-L-alaninamide
Alafosfalin
C5 H13 N2 O4 P
BHAYDBSYOBONRV-IUYQGCFVSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.325 
  • R-Value Work: 0.275 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 84.240α = 90.00
b = 107.730β = 90.00
c = 205.510γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
XDSdata reduction
anisotropydata scaling
SHARPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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