6NCF

The structure of Stable-5-Lipoxygenase bound to AKBA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.87 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.275 
  • R-Value Observed: 0.278 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural and mechanistic insights into 5-lipoxygenase inhibition by natural products.

Gilbert, N.C.Gerstmeier, J.Schexnaydre, E.E.Borner, F.Garscha, U.Neau, D.B.Werz, O.Newcomer, M.E.

(2020) Nat Chem Biol 16: 783-790

  • DOI: 10.1038/s41589-020-0544-7
  • Primary Citation of Related Structures:  
    6NCF, 6N2W

  • PubMed Abstract: 
  • Leukotrienes (LT) are lipid mediators of the inflammatory response that are linked to asthma and atherosclerosis. LT biosynthesis is initiated by 5-lipoxygenase (5-LOX) with the assistance of the substrate-binding 5-LOX-activating protein at the nuclear membrane ...

    Leukotrienes (LT) are lipid mediators of the inflammatory response that are linked to asthma and atherosclerosis. LT biosynthesis is initiated by 5-lipoxygenase (5-LOX) with the assistance of the substrate-binding 5-LOX-activating protein at the nuclear membrane. Here, we contrast the structural and functional consequences of the binding of two natural product inhibitors of 5-LOX. The redox-type inhibitor nordihydroguaiaretic acid (NDGA) is lodged in the 5-LOX active site, now fully exposed by disordering of the helix that caps it in the apo-enzyme. In contrast, the allosteric inhibitor 3-acetyl-11-keto-beta-boswellic acid (AKBA) from frankincense wedges between the membrane-binding and catalytic domains of 5-LOX, some 30 Å from the catalytic iron. While enzyme inhibition by NDGA is robust, AKBA promotes a shift in the regiospecificity, evident in human embryonic kidney 293 cells and in primary immune cells expressing 5-LOX. Our results suggest a new approach to isoform-specific 5-LOX inhibitor development through exploitation of an allosteric site in 5-LOX.


    Organizational Affiliation

    Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, USA. newcomer@lsu.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Arachidonate 5-lipoxygenaseA, B, C, D691Homo sapiensMutation(s): 9 
Gene Names: ALOX5LOG5
EC: 1.13.11.34 (PDB Primary Data), 1.13.11 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P09917 (Homo sapiens)
Explore P09917 
Go to UniProtKB:  P09917
PHAROS:  P09917
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AF7 (Subject of Investigation/LOI)
Query on AF7

Download Ideal Coordinates CCD File 
G [auth B](3alpha,8alpha,17alpha,18alpha)-3-(acetyloxy)-11-oxours-12-en-23-oic acid
C32 H48 O5
HMMGKOVEOFBCAU-BCDBGHSCSA-N
 Ligand Interaction
FE2
Query on FE2

Download Ideal Coordinates CCD File 
E [auth A], F [auth B], H [auth C], I [auth D]FE (II) ION
Fe
CWYNVVGOOAEACU-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.87 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.275 
  • R-Value Observed: 0.278 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.87α = 90
b = 203.72β = 109.71
c = 110.44γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
xia2data reduction

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Heart, Lung, and Blood Institute (NIH/NHLBI)United StatesR01HL107887
American Heart AssociationUnited States16GRNT31000010

Revision History  (Full details and data files)

  • Version 1.0: 2020-05-13
    Type: Initial release
  • Version 1.1: 2020-05-27
    Changes: Database references
  • Version 1.2: 2020-07-08
    Changes: Database references