3VLG

Crystal structure of the W150A mutant LOX-1 CTLD showing impaired OxLDL binding


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.182 

wwPDB Validation 3D Report Full Report



Literature

Structural implication for the impaired binding of W150A mutant LOX-1 to oxidized low density lipoprotein, OxLDL

Nakano, S.Sugihara, M.Yamada, R.Katayanagi, K.Tate, S.

(2012) Biochim Biophys Acta 1824: 739-749

  • DOI: 10.1016/j.bbapap.2012.02.003
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Lectin-like oxidized lipoprotein (OxLDL) receptor 1, LOX-1, is the major OxLDL receptor expressed on vascular endothelial cells. We have previously reported the ligand-recognition mode of LOX-1 based on the crystal structure of the ligand binding dom ...

    Lectin-like oxidized lipoprotein (OxLDL) receptor 1, LOX-1, is the major OxLDL receptor expressed on vascular endothelial cells. We have previously reported the ligand-recognition mode of LOX-1 based on the crystal structure of the ligand binding domain (C-type lectin-like domain, CTLD) and surface plasmon resonance analysis, which suggested that the functional significance of the CTLD dimer (the 'canonical' dimer) is to harbor the characteristic "basic spine" on its surface. In this study, we have identified the key inter-domain interactions in retaining the canonical CTLD dimer by X-ray structural analysis of the inactive mutant W150A CTLD. The canonical CTLD dimer forms through tight hydrophobic interactions, in which W150 engages in a lock-and-key manner and represents the main interaction. The loss of the Trp ring by mutation to Ala prevents the formation of the canonical dimer, as elucidated from docking calculations using the crystal structure of W150A CTLD. The results emphasize that the canonically formed CTLD dimer is essential for LOX-1 to bind to OxLDL, which supports our proposed view that the basic spine surface present in the correctly formed dimer plays a primal role in OxLDL recognition. This concept provides insight into the pathogenic pattern recognized by LOX-1 as a member of the pattern recognition receptors.


    Organizational Affiliation

    Department of Mathematical and Life Sciences, Hiroshima University, Higashi-Hiroshima, Japan.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Oxidized low-density lipoprotein receptor 1
A
145Homo sapiensMutation(s): 1 
Gene Names: OLR1CLEC8ALOX1
Find proteins for P78380 (Homo sapiens)
Go to UniProtKB:  P78380
NIH Common Fund Data Resources
PHAROS  P78380
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.182 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.244α = 90
b = 62.244β = 90
c = 76.671γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-18
    Type: Initial release