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


This is version 1.0 of the entry. See complete history


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
  • Primary Citation of Related Structures:  
    3VLG

  • 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 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 ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Oxidized low-density lipoprotein receptor 1A145Homo sapiensMutation(s): 1 
Gene Names: OLR1CLEC8ALOX1
UniProt & NIH Common Fund Data Resources
Find proteins for P78380 (Homo sapiens)
Explore P78380 
Go to UniProtKB:  P78380
PHAROS:  P78380
Protein Feature View
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  • Reference Sequence
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  (Full details and data files)

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