Solution NMR structure of outer membrane protein AlkL

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.5 of the entry. See complete history


A beta-barrel for oil transport through lipid membranes: Dynamic NMR structures of AlkL.

Schubeis, T.Le Marchand, T.Daday, C.Kopec, W.Tekwani Movellan, K.Stanek, J.Schwarzer, T.S.Castiglione, K.de Groot, B.L.Pintacuda, G.Andreas, L.B.

(2020) Proc Natl Acad Sci U S A 117: 21014-21021

  • DOI: https://doi.org/10.1073/pnas.2002598117
  • Primary Citation of Related Structures:  
    6QAM, 6QWR

  • PubMed Abstract: 

    The protein AlkL is known to increase permeability of the outer membrane of bacteria for hydrophobic molecules, yet the mechanism of transport has not been determined. Differing crystal and NMR structures of homologous proteins resulted in a controversy regarding the degree of structure and the role of long extracellular loops. Here we solve this controversy by determining the de novo NMR structure in near-native lipid bilayers, and by accessing structural dynamics relevant to hydrophobic substrate permeation through molecular-dynamics simulations and by characteristic NMR relaxation parameters. Dynamic lateral exit sites large enough to accommodate substrates such as carvone or octane occur through restructuring of a barrel extension formed by the extracellular loops.

  • Organizational Affiliation

    Centre de Résonance Magnétique Nucléaire à Très Hauts Champs de Lyon (FRE 2034-CNRS, Université Claude Bernard Lyon 1, École Normale Supérieure Lyon), Université de Lyon, 69100 Villeurbanne, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Outer membrane protein AlkL219Pseudomonas oleovoransMutation(s): 0 
Gene Names: alkL
Membrane Entity: Yes 
Find proteins for Q00595 (Pseudomonas oleovorans)
Explore Q00595 
Go to UniProtKB:  Q00595
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ00595
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
European Research CouncilFrance648974
German Research FoundationGermanyAN1316/1-1

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-15
    Type: Initial release
  • Version 1.1: 2020-08-26
    Changes: Database references
  • Version 1.2: 2020-09-02
    Changes: Database references
  • Version 1.3: 2020-09-16
    Changes: Database references
  • Version 1.4: 2023-06-14
    Changes: Database references, Other
  • Version 1.5: 2024-06-19
    Changes: Data collection, Database references