2Q7R

Crystal structure of human FLAP with an iodinated analog of MK-591

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.268 

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Literature

Crystal structure of inhibitor-bound human 5-lipoxygenase-activating protein.

Ferguson, A.D., McKeever, B.M., Xu, S., Wisniewski, D., Miller, D.K., Yamin, T.T., Spencer, R.H., Chu, L., Ujjainwalla, F., Cunningham, B.R., Evans, J.F., Becker, J.W.

(2007) Science 317: 510-512

  • DOI: https://doi.org/10.1126/science.1144346
  • Primary Citation of Related Structures:  
    2Q7M, 2Q7R

  • PubMed Abstract: 

    Leukotrienes are proinflammatory products of arachidonic acid oxidation by 5-lipoxygenase that have been shown to be involved in respiratory and cardiovascular diseases. The integral membrane protein FLAP is essential for leukotriene biosynthesis. We describe the x-ray crystal structures of human FLAP in complex with two leukotriene biosynthesis inhibitors at 4.0 and 4.2 angstrom resolution, respectively. The structures show that inhibitors bind in membrane-embedded pockets of FLAP, which suggests how these inhibitors prevent arachidonic acid from binding to FLAP and subsequently being transferred to 5-lipoxygenase, thereby preventing leukotriene biosynthesis. This structural information provides a platform for the development of therapeutics for respiratory and cardiovascular diseases.

    • Organizational Affiliation: 

    Department of Medicinal Chemistry, Merck Research Laboratories, Rahway, NJ 07065, USA.


Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Arachidonate 5-lipoxygenase-activating protein
A, B, C, D, E
A, B, C, D, E, F
161Homo sapiensMutation(s): 4 
Gene Names: ALOX5AP, FLAP
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P20292 (Homo sapiens)
Explore P20292 
Go to UniProtKB:  P20292
PHAROS:  P20292
GTEx:  ENSG00000132965 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20292
Sequence Annotations
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E
A, B, C, D, E, F
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.00 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.268 
  • R-Value Observed: 0.268 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 180.66α = 90
b = 180.66β = 90
c = 139.99γ = 90
Software Package:
Software NamePurpose
BUSTER-TNTrefinement
HKL-2000data reduction
HKL-2000data scaling
SHARPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-08-21
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2021-10-20
    Changes: Database references, Derived calculations
  • Version 1.3: 2024-10-30
    Changes: Data collection, Structure summary