Crystal structure of human FLAP with MK-591

Experimental Data Snapshot

  • Resolution: 4.25 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


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.

Find similar proteins by:  (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): 1 
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
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
2CS BindingDB:  2Q7M IC50: min: 1.6, max: 8000 (nM) from 6 assay(s)
PDBBind:  2Q7M IC50: 1.6 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 4.25 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.244 
  • Space Group: P 4 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 180.6α = 90
b = 180.6β = 90
c = 140.57γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

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: 2024-02-21
    Changes: Data collection