Molecular Target Synopsis
Domains and Structures
Drugs and Clinical Candidates
Ligand Efficiency Plot
Family Cladogram
Interaction Network
Gene Expression
Gene Copy Number Variation
Germline Genetics

ALOXE3 (Q9BYJ1) - Overview - Molecular Target Synopsis


ALOXE3, Hydroperoxide isomerase ALOXE3
Enzyme Classification
UniProt Q9BYJ1

Also Known as LOXE3_HUMAN, ALOXE3

Non-heme iron-containing lipoxygenase which is atypical in that it displays a prominent hydroperoxide isomerase activity and a reduced dioxygenase activity compared to other lipoxygenases. The hydroperoxide isomerase activity catalyzes the isomerization of hydroperoxides, derived from arachidonic and linoleic acid by ALOX12B, into hepoxilin-type epoxyalcohols. The dioxygenase activity requires a step of activation of the enzyme by molecular oxygen. In presence of oxygen, oxygenates polyunsaturated fatty acids, including arachidonic acid, to produce fatty acid hydroperoxides. In the skin, acts downstream of ALOX12B on the linoleate moiety of esterified omega-hydroxyacyl-sphingosine (EOS) ceramides to produce an epoxy-ketone derivative, a crucial step in the conjugation of omega-hydroxyceramide to membrane proteins. Therefore plays a crucial role in the synthesis of corneocytes lipid envelope and the establishment of the skin barrier to water loss. In parallel, it may have a signaling function in barrier formation through the production of hepoxilins metabolites. Plays also a role in adipocyte differentiation through hepoxilin A3 and hepoxilin B3 production which in turn activate PPARG. Through the production of hepoxilins in the spinal cord, it may regulate inflammatory tactile allodynia.

Isoforms / Transcripts (Protein Coding)

Sub-cellular localization

UniProt: ALOXE3 is active in the following subcellular-locations: cytoplasm.
GO terms: ALOXE3 is active in the following subcellular-locations: cytosol.

GO terms

Gene Copy Number Variation

In COSMIC - Cell Lines Project ALOXE3 has gain in 0 cell-lines, loss in 7 cell-lines and no signal in 998 cell-lines. (see details)

Gene Expression

In NCI60, the highest expressing cell lines are: T47D, MCF7, HL_60

In Array Express (RNA-seq of 675 commonly used human cancer cell lines), the highest expressing cell lines are: RERF-LC-KJ, NCI-H209, SK-N-FI

In Array Express (RNA-seq of long poly adenylated RNA and long non poly adenylated RNA from ENCODE cell lines), the highest expressing cell lines are: SK-N-SH, NHLF, HSMM

(see details)

3D Structures

At greater than 50% identity similarity to ALOXE3 there are:
1 structures (1 chains) solved
1 are solved in complex with at least one small molecule ligand

(see details)
Molecular Target 3D Synopsis

Screening and Chemistry

ALOXE3 has been screened with compounds ( bioactivities). (see details)