[English] 日本語
Yorodumi
- PDB-8ghe: The structure of h12-LOX in tetrameric form bound to endogenous i... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 8ghe
TitleThe structure of h12-LOX in tetrameric form bound to endogenous inhibitor oleoyl-CoA
ComponentsPolyunsaturated fatty acid lipoxygenase ALOX12
KeywordsOXIDOREDUCTASE/INHIBITOR / Lipoxygenase / platelets / lipid-modifying enzyme / lipid oxidation / OXIDOREDUCTASE / OXIDOREDUCTASE-INHIBITOR complex
Function / homology
Function and homology information


unsaturated fatty acid metabolic process / hepoxilin-epoxide hydrolase activity / leukotriene A4 metabolic process / lipoxin B4 biosynthetic process / Synthesis of Hepoxilins (HX) and Trioxilins (TrX) / Biosynthesis of DPAn-6 SPMs / Hydrolases; Acting on ether bonds; Ether hydrolases / arachidonate 12-lipoxygenase / lipoxin A4 biosynthetic process / Biosynthesis of DHA-derived SPMs ...unsaturated fatty acid metabolic process / hepoxilin-epoxide hydrolase activity / leukotriene A4 metabolic process / lipoxin B4 biosynthetic process / Synthesis of Hepoxilins (HX) and Trioxilins (TrX) / Biosynthesis of DPAn-6 SPMs / Hydrolases; Acting on ether bonds; Ether hydrolases / arachidonate 12-lipoxygenase / lipoxin A4 biosynthetic process / Biosynthesis of DHA-derived SPMs / Biosynthesis of DPAn-3-derived maresins / arachidonate 15-lipoxygenase / arachidonate 15-lipoxygenase activity / arachidonate 12(S)-lipoxygenase activity / Synthesis of 12-eicosatetraenoic acid derivatives / linoleate 13S-lipoxygenase activity / Biosynthesis of Lipoxins (LX) / lipoxygenase pathway / Oxidoreductases; Acting on single donors with incorporation of molecular oxygen (oxygenases); With incorporation of two atoms of oxygen / arachidonate metabolic process / lipid oxidation / hepoxilin biosynthetic process / negative regulation of muscle cell apoptotic process / linoleic acid metabolic process / negative regulation of platelet aggregation / superoxide anion generation / fatty acid oxidation / establishment of skin barrier / lipid metabolic process / sarcolemma / iron ion binding / extracellular exosome / membrane / cytosol / cytoplasm
Similarity search - Function
Lipoxygenase, vertebrates, PLAT domain / Lipoxygenase, mammalian / Lipoxygenase, conserved site / Lipoxygenases iron-binding region signature 2. / Lipoxygenase, iron binding site / Lipoxygenases iron-binding region signature 1. / Lipoxygenase / Lipoxygenase, C-terminal / Lipoxigenase, C-terminal domain superfamily / Lipoxygenase ...Lipoxygenase, vertebrates, PLAT domain / Lipoxygenase, mammalian / Lipoxygenase, conserved site / Lipoxygenases iron-binding region signature 2. / Lipoxygenase, iron binding site / Lipoxygenases iron-binding region signature 1. / Lipoxygenase / Lipoxygenase, C-terminal / Lipoxigenase, C-terminal domain superfamily / Lipoxygenase / Lipoxygenase iron-binding catalytic domain profile. / Lipoxygenase homology 2 (beta barrel) domain / PLAT/LH2 domain / PLAT/LH2 domain superfamily / PLAT/LH2 domain / PLAT domain profile.
Similarity search - Domain/homology
Chem-3VV / : / Polyunsaturated fatty acid lipoxygenase ALOX12
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.05 Å
AuthorsBlack, K.A. / Mobbs, J.I. / Venugopal, H. / Thal, D.M. / Glukhova, A.
Funding support United States, 2items
OrganizationGrant numberCountry
Other private
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35 GM131835 United States
CitationJournal: Blood / Year: 2023
Title: Cryo-EM structures of human arachidonate 12S-lipoxygenase bound to endogenous and exogenous inhibitors.
Authors: Jesse I Mobbs / Katrina A Black / Michelle Tran / Wessel A C Burger / Hariprasad Venugopal / Theodore R Holman / Michael Holinstat / David M Thal / Alisa Glukhova /
Abstract: Human 12-lipoxygenase (12-LOX) is a key enzyme involved in platelet activation, and the regulation of its activity has been targeted for the treatment of heparin-induced thrombocytopenia. Despite the ...Human 12-lipoxygenase (12-LOX) is a key enzyme involved in platelet activation, and the regulation of its activity has been targeted for the treatment of heparin-induced thrombocytopenia. Despite the clinical importance of 12-LOX, the exact mechanisms by which it affects platelet activation are not fully understood, and the lack of structural information has limited drug discovery efforts. In this study, we used single-particle cryo-electron microscopy to determine high-resolution structures (1.7-2.8 Å) of human 12-LOX. Our results showed that 12-LOX can exist in multiple oligomeric states, from monomer to hexamer, which may affect its catalytic activity and membrane association. We also identified different conformations within the 12-LOX dimer, which likely represent different time points in its catalytic cycle. Furthermore, we identified small molecules bound to 12-LOX. The active site of the 12-LOX tetramer was occupied by an endogenous 12-LOX inhibitor, a long-chain acyl coenzyme A. In addition, we found that the 12-LOX hexamer can simultaneously bind to arachidonic acid and ML355, a selective 12-LOX inhibitor that has passed a phase 1 clinical trial for the treatment of heparin-induced thrombocytopenia and received a fast-track designation by the Food and Drug Administration. Overall, our findings provide novel insights into the assembly of 12-LOX oligomers, their catalytic mechanism, and small molecule binding, paving the way for further drug development targeting the 12-LOX enzyme.
History
DepositionMar 9, 2023Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 9, 2023Provider: repository / Type: Initial release
Revision 1.1Oct 11, 2023Group: Data collection / Database references
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.title / _citation_author.identifier_ORCID / _citation_author.name

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
B: Polyunsaturated fatty acid lipoxygenase ALOX12
C: Polyunsaturated fatty acid lipoxygenase ALOX12
D: Polyunsaturated fatty acid lipoxygenase ALOX12
A: Polyunsaturated fatty acid lipoxygenase ALOX12
hetero molecules


Theoretical massNumber of molelcules
Total (without water)307,5869
Polymers306,3314
Non-polymers1,2555
Water14,952830
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

-
Components

#1: Protein
Polyunsaturated fatty acid lipoxygenase ALOX12 / Arachidonate (12S)-lipoxygenase / 12S-LOX / 12S-lipoxygenase / Arachidonate (15S)-lipoxygenase / ...Arachidonate (12S)-lipoxygenase / 12S-LOX / 12S-lipoxygenase / Arachidonate (15S)-lipoxygenase / Linoleate (13S)-lipoxygenase / Lipoxin synthase 12-LO / Platelet-type lipoxygenase 12


Mass: 76582.703 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ALOX12, 12LO, LOG12 / Production host: Homo sapiens (human)
References: UniProt: P18054, Oxidoreductases; Acting on single donors with incorporation of molecular oxygen (oxygenases); With incorporation of two atoms of oxygen, arachidonate 12-lipoxygenase, ...References: UniProt: P18054, Oxidoreductases; Acting on single donors with incorporation of molecular oxygen (oxygenases); With incorporation of two atoms of oxygen, arachidonate 12-lipoxygenase, arachidonate 15-lipoxygenase, Hydrolases; Acting on ether bonds; Ether hydrolases
#2: Chemical
ChemComp-FE2 / FE (II) ION


Mass: 55.845 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Fe
#3: Chemical ChemComp-3VV / S-{(3R,5R,9R)-1-[(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-hydroxy-3-(phosphonooxy)tetrahydrofuran-2-yl]-3,5,9-trihydroxy-8,8-dimethyl-3,5-dioxido-10,14-dioxo-2,4,6-trioxa-11,15-diaza-3lambda~5~,5lambda~5~-diphosphaheptadecan-17-yl} (9Z)-octadec-9-enethioate (non-preferred name) / oleoyl-CoA


Mass: 1031.980 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C39H68N7O17P3S / Feature type: SUBJECT OF INVESTIGATION
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 830 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestY

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

-
Sample preparation

ComponentName: Tetrameric human 12-Lipoxygenase bound to endogenous inhibitor oleoyl-CoA
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.3 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

-
Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Calibrated magnification: 105000 X / Nominal defocus max: 1500 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

-
Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM software
IDNameVersionCategory
4Gctf1.18CTF correction
7UCSF Chimeramodel fitting
12cryoSPARC3D reconstruction
19PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 2736609
3D reconstructionResolution: 2.05 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 311579 / Symmetry type: POINT
Atomic model building
IDProtocol
1FLEXIBLE FIT
2
Atomic model building
ID 3D fitting-IDSource nameType
11AlphaFoldin silico model
22AlphaFoldin silico model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00421931
ELECTRON MICROSCOPYf_angle_d0.65729821
ELECTRON MICROSCOPYf_dihedral_angle_d11.7018211
ELECTRON MICROSCOPYf_chiral_restr0.0473207
ELECTRON MICROSCOPYf_plane_restr0.0093884

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more