NMR Structure of full length apoE3

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Topology of human apolipoprotein E3 uniquely regulates its diverse biological functions.

Chen, J.Li, Q.Wang, J.

(2011) Proc Natl Acad Sci U S A 108: 14813-14818

  • DOI: https://doi.org/10.1073/pnas.1106420108
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Human apolipoprotein E (apoE) is one of the major determinants in lipid transport, playing a critical role in atherosclerosis and other diseases. Binding to lipid and heparan sulfate proteoglycans (HSPG) induces apoE to adopt active conformations for binding to low-density lipoprotein receptor (LDLR) family. ApoE also interacts with beta amyloid peptide, manifests critical isoform-specific effects on Alzheimer's disease. Despite the importance of apoE in these major human diseases, the fundamental questions of how apoE adjusts its structure upon binding to regulate its diverse functions remain unsolved. We report the NMR structure of apoE3, displaying a unique topology of three structural domains. The C-terminal domain presents a large exposed hydrophobic surface that likely initiates interactions with lipids, HSPG, and beta amyloid peptides. The unique topology precisely regulates apoE tertiary structure to permit only one possible conformational adaptation upon binding and provides a double security in preventing lipid-free and partially-lipidated apoE from premature binding to apoE receptors during receptor biogenesis. This topology further ensures the optimal receptor-binding activity by the fully lipidated apoE during lipoprotein transport in circulation and in the brain. These findings provide a structural framework for understanding the structural basis of the diverse functions of this important protein in human diseases.

  • Organizational Affiliation

    Department of Biochemistry and Molecular Biology, School of Medicine, Wayne State University, Detroit, MI 48201, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Apolipoprotein E307Homo sapiensMutation(s): 5 
Gene Names: APOE
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P02649 (Homo sapiens)
Explore P02649 
Go to UniProtKB:  P02649
GTEx:  ENSG00000130203 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02649
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-08-03
    Type: Initial release
  • Version 1.1: 2011-09-21
    Changes: Database references
  • Version 1.2: 2024-05-01
    Changes: Data collection, Database references