5BPP

Structure of human Leukotriene A4 hydrolase in complex with inhibitor 4AZ


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Bufexamac ameliorates LPS-induced acute lung injury in mice by targeting LTA4H

Xiao, Q.Dong, N.N.Yao, X.Wu, D.Lu, Y.Mao, F.Zhu, J.Li, J.Huang, J.Chen, A.Huang, L.Wang, X.Yang, G.He, G.Xu, Y.Lu, W.Q.

(2016) Sci Rep 6: 25298-25298

  • DOI: https://doi.org/10.1038/srep25298
  • Primary Citation of Related Structures:  
    5BPP

  • PubMed Abstract: 

    Neutrophils play an important role in the occurrence and development of acute lung injury (ALI). Leukotriene B4 (LTB4), a hydrolysis product of epoxide leukotriene A4 (LTA4) catalyzed by LTA4 hydrolase (LTA4H), is one of the most potent chemoattractants for neutrophil. Bufexamac is a drug widely used as an anti-inflammatory agent on the skin, however, the mechanism of action is still not fully understood. In this study, we found bufexamac was capable of specifically inhibiting LTA4H enzymatic activity and revealed the mode of interaction of bufexamac and LTA4H using X-ray crystallography. Moreover, bufexamac significantly prevented the production of LTB4 in neutrophil and inhibited the fMLP-induced neutrophil migration through inhibition of LTA4H. Finally, bufexamac significantly attenuated lung inflammation as reflected by reduced LTB4 levels and weakened neutrophil infiltration in bronchoalveolar lavage fluid from a lipopolysaccharide-induced ALI mouse model. In summary, our study indicates that bufexamac acts as an inhibitor of LTB4 biosynthesis and may have potential clinical applications for the treatment of ALI.


  • Organizational Affiliation

    The Genetic Engineering International Cooperation Base of Chinese Ministry of Science and Technology, Key Laboratory of Molecular Biophysics of Chinese Ministry of Education, College of Life Science and Technology, Huazhong University of Science &Technology, Wuhan 430074, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Leukotriene A-4 hydrolase631Homo sapiensMutation(s): 0 
Gene Names: LTA4HLTA4
EC: 3.3.2.6 (PDB Primary Data), 3.4.11.4 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P09960 (Homo sapiens)
Explore P09960 
Go to UniProtKB:  P09960
PHAROS:  P09960
GTEx:  ENSG00000111144 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP09960
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
A4Z
Query on A4Z

Download Ideal Coordinates CCD File 
G [auth A]2-(4-butoxyphenyl)-N-hydroxyacetamide
C12 H17 N O3
MXJWRABVEGLYDG-UHFFFAOYSA-N
YB
Query on YB

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]
YTTERBIUM (III) ION
Yb
AWSFICBXMUKWSK-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
ACT
Query on ACT

Download Ideal Coordinates CCD File 
F [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.983α = 90
b = 87.186β = 90
c = 99.434γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
Cootmodel building

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-08-10
    Type: Initial release
  • Version 1.1: 2024-03-20
    Changes: Data collection, Database references, Derived calculations