1SOH

The structure of human apolipoprotein C-II in dodecyl phosphocholine


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 18 
  • Selection Criteria: Structures with minimal restraint violations and favourable non-bond energy 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure and interactions of human apolipoprotein C-II in dodecyl phosphocholine

MacRaild, C.A.Howlett, G.J.Gooley, P.R.

(2004) Biochemistry 43: 8084-8093

  • DOI: 10.1021/bi049817l

  • PubMed Abstract: 
  • The structure of human apolipoprotein C-II (apoC-II) in the presence of dodecyl phosphocholine (DPC) micelles has been investigated by NMR spectroscopy. The resulting structural information is compared to that available for apoC-II in the presence of ...

    The structure of human apolipoprotein C-II (apoC-II) in the presence of dodecyl phosphocholine (DPC) micelles has been investigated by NMR spectroscopy. The resulting structural information is compared to that available for apoC-II in the presence of sodium dodecyl sulfate, revealing a high level of overall similarity but several significant differences. These findings further our understandings of the structural basis for apoC-II function. The interactions of the protein with the detergent micelle are probed using intermolecular nuclear Overhauser effects (NOEs) and paramagnetic agents. These interactions are seen across almost the full length of apoC-II and show the periodicity expected for an amphipathic helix interacting with the amphipathic surface of the DPC micelle. Furthermore, we observe specific contacts between lysine residues of apoC-II and protons near the phosphate group of DPC, consistent with the predictions of the so-called "snorkel hypothesis" of the structural basis for the apolipoprotein/lipid interaction (Segrest, J. P., Jackson, R. L., Morrisett, J. D., and Gotto, A. M., Jr. (1974) A molecular theory of lipid-protein interactions in the plasma lipoproteins, FEBS Lett 38, 247-258.). These findings offer the most detailed structural information available for the interaction between an apolipoprotein and the phospholipids of the lipoprotein surface and provide the first direct structural support for the snorkel hypothesis.


    Organizational Affiliation

    Russell Grimwade School of Biochemistry and Molecular Biology, University of Melbourne, Parkville, Victoria 3010, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Apolipoprotein C-II
A
79Homo sapiensMutation(s): 0 
Gene Names: APOC2 (APC2)
Find proteins for P02655 (Homo sapiens)
Go to Gene View: APOC2
Go to UniProtKB:  P02655
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 18 
  • Selection Criteria: Structures with minimal restraint violations and favourable non-bond energy 
  • Olderado: 1SOH Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-07-27
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance