1LE2

STRUCTURAL BASIS FOR ALTERED FUNCTION IN THE COMMON MUTANTS OF HUMAN APOLIPOPROTEIN-E


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Salt bridge relay triggers defective LDL receptor binding by a mutant apolipoprotein.

Wilson, C.Mau, T.Weisgraber, K.H.Wardell, M.R.Mahley, R.W.Agard, D.A.

(1994) Structure 2: 713-718


  • PubMed Abstract: 
  • Apolipoprotein-E (apo-E), a 34kDa blood plasma protein, plays a key role in directing cholesterol transport via its interaction with the low density lipoprotein (LDL) receptor. The amino-terminal domain of apo-E forms an unusually elongated four-heli ...

    Apolipoprotein-E (apo-E), a 34kDa blood plasma protein, plays a key role in directing cholesterol transport via its interaction with the low density lipoprotein (LDL) receptor. The amino-terminal domain of apo-E forms an unusually elongated four-helix bundle arranged such that key basic residues involved in LDL receptor binding form a cluster at the end of one of the helices. A common apo-E variant, apo-E2, corresponding to the single-site substitution Arg158-->Cys, displays minimal LDL receptor binding and is associated with significant changes in plasma cholesterol levels and increased risk of coronary heart disease. Surprisingly, the site of mutation in this variant is physically well removed (> 12A) from the cluster of LDL receptor binding residues.


    Related Citations: 
    • Three-Dimensional Structure of the Ldl Receptor-Binding Domain of Human Apolipoprotein E
      Wilson, C.,Wardell, M.R.,Weisgraber, K.H.,Mahley, R.W.,Agard, D.A.
      (1991) Science 252: 1817
    • Crystallization and Preliminary X-Ray Diffraction Studies on the Amino-Terminal (Receptor-Binding) Domain of Human Apolipoprotein E3 from Serum Very Low Density Lipoproteins
      Aggerbeck, L.P.,Wetterau, J.R.,Weisgraber, K.H.,Mahley, R.W.,Agard, D.A.
      (1988) J.Mol.Biol. 202: 179


    Organizational Affiliation

    Howard Hughes Medical Institute, Department of Biochemistry and Biophysics, University of California, San Francisco 94143-0448.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
APOLIPOPROTEIN E2
A
144Homo sapiensMutation(s): 0 
Gene Names: APOE
Find proteins for P02649 (Homo sapiens)
Go to Gene View: APOE
Go to UniProtKB:  P02649
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Work: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 41.060α = 90.00
b = 53.940β = 90.00
c = 83.910γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1992-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance