2N5E

The 3D solution structure of discoidal high-density lipoprotein particles


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Solution structure of discoidal high-density lipoprotein particles with a shortened apolipoprotein A-I.

Bibow, S.Polyhach, Y.Eichmann, C.Chi, C.N.Kowal, J.Albiez, S.McLeod, R.A.Stahlberg, H.Jeschke, G.Guntert, P.Riek, R.

(2017) Nat.Struct.Mol.Biol. 24: 187-193

  • DOI: 10.1038/nsmb.3345

  • PubMed Abstract: 
  • High-density lipoprotein (HDL) particles are cholesterol and lipid transport containers. Mature HDL particles destined for the liver develop through the formation of intermediate discoidal HDL particles, which are the primary acceptors for cholestero ...

    High-density lipoprotein (HDL) particles are cholesterol and lipid transport containers. Mature HDL particles destined for the liver develop through the formation of intermediate discoidal HDL particles, which are the primary acceptors for cholesterol. Here we present the three-dimensional structure of reconstituted discoidal HDL (rdHDL) particles, using a shortened construct of human apolipoprotein A-I, determined from a combination of nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR) and transmission electron microscopy (TEM) data. The rdHDL particles feature a protein double belt surrounding a lipid bilayer patch in an antiparallel fashion. The integrity of this structure is maintained by up to 28 salt bridges and a zipper-like pattern of cation-π interactions between helices 4 and 6. To accommodate a hydrophobic interior, a gross 'right-to-right' rotation of the helices after lipidation is necessary. The structure reflects the complexity required for a shuttling container to hold a fluid lipid or cholesterol interior at a protein:lipid ratio of 1:50.


    Organizational Affiliation

    Laboratory of Physical Chemistry, ETH Zurich, Zurich, Switzerland.,Center for Cellular Imaging and NanoAnalytics, Biozentrum University of Basel, Basel, Switzerland.,Institute of Biophysical Chemistry, Goethe-University Frankfurt am Main, Frankfurt am Main, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Apolipoprotein A-I
A, B
167Homo sapiensMutation(s): 0 
Gene Names: APOA1
Find proteins for P02647 (Homo sapiens)
Go to Gene View: APOA1
Go to UniProtKB:  P02647
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-12-21
    Type: Initial release
  • Version 1.1: 2017-01-11
    Type: Database references
  • Version 1.2: 2017-02-22
    Type: Database references