3PCV

Crystal structure analysis of human leukotriene C4 synthase at 1.9 angstrom resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The catalytic architecture of leukotriene C4 synthase with two arginine residues

Saino, H.Ukita, Y.Ago, H.Irikura, D.Nisawa, A.Ueno, G.Yamamoto, M.Kanaoka, Y.Lam, B.K.Austen, K.F.Miyano, M.

(2011) J Biol Chem 286: 16392-16401

  • DOI: 10.1074/jbc.M110.150177
  • Primary Citation of Related Structures:  
    3PCV

  • PubMed Abstract: 
  • Leukotriene (LT) C(4) and its metabolites, LTD(4) and LTE(4), are involved in the pathobiology of bronchial asthma. LTC(4) synthase is the nuclear membrane-embedded enzyme responsible for LTC(4) biosynthesis, catalyzing the conjugation of two substrates that have considerably different water solubility; that amphipathic LTA(4) as a derivative of arachidonic acid and a water-soluble glutathione (GSH) ...

    Leukotriene (LT) C(4) and its metabolites, LTD(4) and LTE(4), are involved in the pathobiology of bronchial asthma. LTC(4) synthase is the nuclear membrane-embedded enzyme responsible for LTC(4) biosynthesis, catalyzing the conjugation of two substrates that have considerably different water solubility; that amphipathic LTA(4) as a derivative of arachidonic acid and a water-soluble glutathione (GSH). A previous crystal structure revealed important details of GSH binding and implied a GSH activating function for Arg-104. In addition, Arg-31 was also proposed to participate in the catalysis based on the putative LTA(4) binding model. In this study enzymatic assay with mutant enzymes demonstrates that Arg-104 is required for the binding and activation of GSH and that Arg-31 is needed for catalysis probably by activating the epoxide group of LTA(4).


    Related Citations: 
    • Crystal structure of a human membrane protein involved in cysteinyl leukotriene biosynthesis
      Ago, H., Kanaoka, Y., Irikura, D., Lam, B.K., Shimamura, T., Austen, K.F., Miyano, M.
      (2007) Nature 448: 609

    Organizational Affiliation

    Structural Biophysics Laboratory, RIKEN SPring-8 Center, Harima Institute, Sayo, Hyogo, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Leukotriene C4 synthaseA156Homo sapiensMutation(s): 0 
Gene Names: LTC4S
EC: 4.4.1.20 (PDB Primary Data), 2.5.1 (UniProt)
Find proteins for Q16873 (Homo sapiens)
Explore Q16873 
Go to UniProtKB:  Q16873
NIH Common Fund Data Resources
PHAROS:  Q16873
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
LMT
Query on LMT

Download Ideal Coordinates CCD File 
C [auth A] , D [auth A] , E [auth A] , F [auth A] , G [auth A] , H [auth A] , I [auth A] , J [auth A] , 
C [auth A],  D [auth A],  E [auth A],  F [auth A],  G [auth A],  H [auth A],  I [auth A],  J [auth A],  K [auth A],  L [auth A],  M [auth A]
DODECYL-BETA-D-MALTOSIDE
C24 H46 O11
NLEBIOOXCVAHBD-QKMCSOCLSA-N
 Ligand Interaction
GSH
Query on GSH

Download Ideal Coordinates CCD File 
B [auth A]GLUTATHIONE
C10 H17 N3 O6 S
RWSXRVCMGQZWBV-WDSKDSINSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
V [auth A], W [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
N [auth A], O [auth A], P [auth A], Q [auth A]1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
UNL
Query on UNL

Download Ideal Coordinates CCD File 
R [auth A], S [auth A], T [auth A], U [auth A]Unknown ligand
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: F 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 168.0295α = 90
b = 168.0295β = 90
c = 168.0295γ = 90
Software Package:
Software NamePurpose
BSSdata collection
AMoREphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-03-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2011-12-14
    Changes: Database references, Non-polymer description