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Aliases for LTA4H Gene

Aliases for LTA4H Gene

  • Leukotriene A4 Hydrolase 2 3 5
  • Leukotriene A(4) Hydrolase 4
  • LTA-4 Hydrolase 4
  • EC 4
  • LTA4 4

External Ids for LTA4H Gene

Previous GeneCards Identifiers for LTA4H Gene

  • GC12M095829
  • GC12M096758
  • GC12M096327
  • GC12M094897
  • GC12M093456
  • GC12M096394

Summaries for LTA4H Gene

Entrez Gene Summary for LTA4H Gene

  • The protein encoded by this gene is an enzyme that contains both hydrolase and aminopeptidase activities. The hydrolase activity is used in the final step of the biosynthesis of leukotriene B4, a proinflammatory mediator. The aminopeptidase activity has been shown to degrade proline-glycine-proline (PGP), a neutrophil chemoattractant and biomarker for chronic obstructive pulmonary disease (COPD). Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2015]

GeneCards Summary for LTA4H Gene

LTA4H (Leukotriene A4 Hydrolase) is a Protein Coding gene. Diseases associated with LTA4H include Psoriasis 5 and Tuberculous Meningitis. Among its related pathways are Innate Immune System and Arachidonic acid metabolism. Gene Ontology (GO) annotations related to this gene include peptidase activity. An important paralog of this gene is RNPEP.

UniProtKB/Swiss-Prot for LTA4H Gene

  • Epoxide hydrolase that catalyzes the final step in the biosynthesis of the proinflammatory mediator leukotriene B4. Has also aminopeptidase activity.

Tocris Summary for LTA4H Gene

  • Leukotriene A4 hydrolase, (LTA4 hydrolase, LTA4H) is a zinc-dependent epoxide hydrolase which hydrolyzes LTA4 to form LTB4 during leukotriene biosynthesis. The enzyme is the only member of the leukotriene biosynthetic pathway which is mainly cytoplasmic.

Additional gene information for LTA4H Gene

No data available for CIViC summary , Gene Wiki entry , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for LTA4H Gene

Genomics for LTA4H Gene

GeneHancer (GH) Regulatory Elements for LTA4H Gene

Promoters and enhancers for LTA4H Gene
GeneHancer (GH) Identifier GH Type GH
GH Sources Gene Association Score Total Score TSS distance (kb) Number of Genes Away Size (kb) Transcription Factor
Binding Sites
Gene Targets
GH12I096033 Promoter/Enhancer 2.3 EPDnew Ensembl ENCODE dbSUPER 550.4 +8.3 8282 2.9 HDGF PKNOX1 FOXA2 ARNT ARID4B SIN3A DMAP1 ZNF2 ZBTB7B IRF4 TRD-GTC2-8 LTA4H HAL LOC102723340 NR2C1 METAP2 VEZT AMDHD1 ENSG00000257715
GH12I095652 Enhancer 1.6 FANTOM5 Ensembl ENCODE dbSUPER 19.4 +389.8 389788 2.4 CLOCK FOXA2 ZNF133 ETS1 YY1 ZNF302 ZNF207 FOS RXRA YY2 NR2C1 ELK3 METAP2 SNRPF LTA4H NTN4 USP44 RPL29P26 VEZT ENSG00000212448
GH12I096044 Enhancer 1.5 FANTOM5 Ensembl ENCODE dbSUPER 20.4 -3.2 -3181 5.4 FOXA2 SMAD1 FEZF1 TCF12 ATF7 FOS JUNB REST ATF4 ETV4 GC12P096047 LTA4H HAL ELK3 SNRPF AMDHD1
GH12I095941 Promoter/Enhancer 2 EPDnew Ensembl ENCODE 9.9 +100.4 100354 2.4 ZFP64 ARID4B SIN3A FEZF1 DMAP1 ZNF2 YY1 ZNF213 SP3 SP5 AMDHD1 CCDC38 NR2C1 USP44 ELK3 METAP2 SNRPF VEZT LTA4H HAL
GH12I096207 Enhancer 1.7 FANTOM5 Ensembl ENCODE dbSUPER 11.3 -171.5 -171510 15.8 PKNOX1 ATF1 FOXA2 ARID4B SIN3A BRCA1 ARID2 ZNF207 ZNF143 FOS LTA4H CDK17 CFAP54 LOC102723340 ENSG00000258177 PIR48131 ELK3
- Elite GeneHancer and/or Elite GeneHancer-gene association Download GeneHancer data dump

GeneHancers around LTA4H on UCSC Golden Path with GeneCards custom track

Top Transcription factor binding sites by QIAGEN in the LTA4H gene promoter:

Genomic Locations for LTA4H Gene

Genomic Locations for LTA4H Gene
42,768 bases
Minus strand

Genomic View for LTA4H Gene

Genes around LTA4H on UCSC Golden Path with GeneCards custom track

Cytogenetic band:
LTA4H Gene in genomic location: bands according to Ensembl, locations according to GeneLoc (and/or Entrez Gene and/or Ensembl if different)
Genomic Location for LTA4H Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for LTA4H Gene

Proteins for LTA4H Gene

  • Protein details for LTA4H Gene (UniProtKB/Swiss-Prot)

    Protein Symbol:
    Recommended name:
    Leukotriene A-4 hydrolase
    Protein Accession:
    Secondary Accessions:
    • B4DNQ9
    • F8VV40
    • Q6IAT6
    • Q9UCT7

    Protein attributes for LTA4H Gene

    611 amino acids
    Molecular mass:
    69285 Da
    Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
    Quaternary structure:
    • Monomer.

    Three dimensional structures from OCA and Proteopedia for LTA4H Gene

    Alternative splice isoforms for LTA4H Gene


neXtProt entry for LTA4H Gene

Post-translational modifications for LTA4H Gene

  • Phosphorylation at Ser-416 inhibits enzymatic activity.
  • Ubiquitination at isoforms=220, posLast=5858, isoforms=2, 3, 464, posLast=7373, posLast=8383, isoforms=2, 3, 4127, isoforms=2, 3, 4225, isoforms=2, 3, 4355, isoforms=2, 3, 4414, posLast=418418, isoforms=2, 3, 4480, isoforms=2, 3, 4493, isoforms=4557, posLast=573573, posLast=580580, and isoforms=4593
  • Modification sites at PhosphoSitePlus

No data available for DME Specific Peptides for LTA4H Gene

Domains & Families for LTA4H Gene

Gene Families for LTA4H Gene

Human Protein Atlas (HPA):
  • Cancer-related genes
  • Enzymes
  • Plasma proteins
  • Predicted intracellular proteins

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the peptidase M1 family.
  • Belongs to the peptidase M1 family.
genes like me logo Genes that share domains with LTA4H: view

Function for LTA4H Gene

Molecular function for LTA4H Gene

GENATLAS Biochemistry:
leukotriene A4 hydrolase,highly expressed in spleen,lung,small intestine
UniProtKB/Swiss-Prot CatalyticActivity:
(7E,9E,11Z,14Z)-(5S,6S)-5,6-epoxyicosa-7,9,11,14-tetraenoate + H(2)O = (6Z,8E,10E,14Z)-(5S,12R)-5,12-dihydroxyicosa-6,8,10,14-tetraenoate.
UniProtKB/Swiss-Prot EnzymeRegulation:
Inhibited by bestatin. Subject to suicide inhibition by leukotriene A4, due to the formation of a covalent adduct at Tyr-379.
UniProtKB/Swiss-Prot Function:
Epoxide hydrolase that catalyzes the final step in the biosynthesis of the proinflammatory mediator leukotriene B4. Has also aminopeptidase activity.

Enzyme Numbers (IUBMB) for LTA4H Gene

Phenotypes From GWAS Catalog for LTA4H Gene

Gene Ontology (GO) - Molecular Function for LTA4H Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0003723 RNA binding HDA 22658674
GO:0004177 aminopeptidase activity IDA 9774412
GO:0004301 epoxide hydrolase activity IMP,TAS 11154734
GO:0004463 leukotriene-A4 hydrolase activity TAS --
GO:0005515 protein binding IPI 21044950
genes like me logo Genes that share ontologies with LTA4H: view
genes like me logo Genes that share phenotypes with LTA4H: view

Animal Models for LTA4H Gene

MGI Knock Outs for LTA4H:

Animal Model Products

CRISPR Products

Inhibitory RNA Products

No data available for Human Phenotype Ontology , Transcription Factor Targets and HOMER Transcription for LTA4H Gene

Localization for LTA4H Gene

Subcellular locations from UniProtKB/Swiss-Prot for LTA4H Gene


Subcellular locations from

Extracellular space Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi Apparatus Nucleus Mitochondrion 0 1 2 3 4 5 Confidence
COMPARTMENTS Subcellular localization image for LTA4H gene
Compartment Confidence
extracellular 5
nucleus 5
cytosol 5
plasma membrane 1
mitochondrion 1

Subcellular locations from the

Human Protein Atlas (HPA)
  • Cytosol (3)
  • Nucleoplasm (3)
See all subcellular structures

Gene Ontology (GO) - Cellular Components for LTA4H Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005576 extracellular region TAS --
GO:0005634 nucleus IBA,IDA --
GO:0005654 nucleoplasm IDA --
GO:0005737 cytoplasm IBA --
GO:0005829 cytosol TAS --
genes like me logo Genes that share ontologies with LTA4H: view

Pathways & Interactions for LTA4H Gene

genes like me logo Genes that share pathways with LTA4H: view

Pathways by source for LTA4H Gene

UniProtKB/Swiss-Prot P09960-LKHA4_HUMAN

  • Pathway: Lipid metabolism; leukotriene B4 biosynthesis.

Gene Ontology (GO) - Biological Process for LTA4H Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006508 proteolysis IEA --
GO:0006691 leukotriene metabolic process TAS --
GO:0019370 leukotriene biosynthetic process TAS,IMP 11675384
GO:0043171 peptide catabolic process IDA 9774412
GO:0043312 neutrophil degranulation TAS --
genes like me logo Genes that share ontologies with LTA4H: view

No data available for SIGNOR curated interactions for LTA4H Gene

Drugs & Compounds for LTA4H Gene

(53) Drugs for LTA4H Gene - From: DrugBank, PharmGKB, ClinicalTrials, ApexBio, DGIdb, IUPHAR, HMDB, Tocris, and Novoseek

Name Status Disease Links Group Role Mechanism of Action Clinical Trials
Captopril Approved Pharma Inhibition, Inhibitor, Target ACE inhibitor, ACE inhibitor; also inhibits LTA4 hydrolase 37
Dexamethasone Approved, Investigational, Vet_approved Pharma Agonist 2314
Montelukast Approved Pharma Antagonist 280
Water Approved Pharma 0
Imidazole Experimental, Investigational Pharma Target 37

(14) Additional Compounds for LTA4H Gene - From: Novoseek and HMDB

Name Synonyms Role CAS Number PubChem IDs PubMed IDs
12-Keto-tetrahydro-leukotriene B4
  • 12-Keto-10,11,14,15-tetrahydro-LTB4
  • 5S-Hydroxy-12-keto-6Z,8E-eicosadienoate
  • 5S-Hydroxy-12-keto-6Z,8E-eicosadienoic acid
Leukotriene A4
  • (5S,6S,7E,9E,11Z,14Z)-5,6-Epoxyicosa-7,9,11,14-tetraenoate
  • (5S,6S,7E,9E,11Z,14Z)-5,6-Epoxyicosa-7,9,11,14-tetraenoic acid
  • (7E,9E,11Z,14Z)-(5S,6S)-5,6-Epoxyeicosa-7,9,11,14-tetraenoate
  • (7E,9E,11Z,14Z)-(5S,6S)-5,6-Epoxyeicosa-7,9,11,14-tetraenoic acid
  • (7E,9E,11Z,14Z)-(5S,6S)-5,6-epoxyicosa- 7,9,11,14-tetraenoate

(1) Tocris Compounds for LTA4H Gene

Compound Action Cas Number
SC 57461A Selective inhibitor of LTA4 hydrolase 423169-68-0

(2) ApexBio Compounds for LTA4H Gene

Compound Action Cas Number
Bestatin Aminopeptidase inhibitor 58970-76-6
SC 57461A LTA4 hydrolase inhibitor,potent and selective 423169-68-0
genes like me logo Genes that share compounds with LTA4H: view

Drug Products

Transcripts for LTA4H Gene

Unigene Clusters for LTA4H Gene

Leukotriene A4 hydrolase:
Representative Sequences:

CRISPR Products

Inhibitory RNA Products

Alternative Splicing Database (ASD) splice patterns (SP) for LTA4H Gene

ExUns: 1a · 1b ^ 2 ^ 3 ^ 4 ^ 5 ^ 6 ^ 7 ^ 8 ^ 9 ^ 10 ^ 11a · 11b ^ 12 ^ 13 ^ 14 ^ 15a · 15b ^ 16 ^ 17 ^ 18 ^ 19 ^ 20 ^ 21 ^ 22 ^ 23a ·
SP1: - - - -
SP2: -
SP3: - - - -
SP4: - - -

ExUns: 23b

Relevant External Links for LTA4H Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for LTA4H Gene

mRNA expression in normal human tissues from GTEx, Illumina, BioGPS, and CGAP SAGE for LTA4H Gene

mRNA differential expression in normal tissues according to GTEx for LTA4H Gene

This gene is overexpressed in Whole Blood (x8.6).

Integrated Proteomics: protein expression in normal tissues and cell lines from ProteomicsDB, PaxDb, MaxQB, and MOPED for LTA4H Gene

Protein tissue co-expression partners for LTA4H Gene

NURSA nuclear receptor signaling pathways regulating expression of LTA4H Gene:


SOURCE GeneReport for Unigene cluster for LTA4H Gene:


mRNA Expression by UniProt/SwissProt for LTA4H Gene:

Tissue specificity: Isoform 1 and isoform 2 are expressed in monocytes, lymphocytes, neutrophils, reticulocytes, platelets and fibroblasts.

Evidence on tissue expression from TISSUES for LTA4H Gene

  • Lung(4.8)
  • Nervous system(4.7)
  • Eye(4.4)
  • Liver(4.4)
  • Kidney(3.6)
  • Intestine(3.2)
  • Blood(3.1)
  • Heart(2.3)
  • Muscle(2.1)
  • Spleen(2)
genes like me logo Genes that share expression patterns with LTA4H: view

No data available for mRNA expression in embryonic tissues and stem cells from LifeMap Discovery , Protein differential expression in normal tissues and Phenotype-based relationships between genes and organs from Gene ORGANizer for LTA4H Gene

Orthologs for LTA4H Gene

This gene was present in the common ancestor of eukaryotes.

Orthologs for LTA4H Gene

Organism Taxonomy Gene Similarity Type Details
(Pan troglodytes)
Mammalia LTA4H 33 34
  • 99.84 (n)
(Canis familiaris)
Mammalia LTA4H 33 34
  • 90.78 (n)
(Bos Taurus)
Mammalia LTA4H 33 34
  • 90.45 (n)
(Mus musculus)
Mammalia Lta4h 16 34 33
  • 87.23 (n)
(Rattus norvegicus)
Mammalia Lta4h 33
  • 86.25 (n)
(Monodelphis domestica)
Mammalia LTA4H 34
  • 84 (a)
(Ornithorhynchus anatinus)
Mammalia LTA4H 34
  • 74 (a)
(Gallus gallus)
Aves LTA4H 34 33
  • 74.74 (n)
(Anolis carolinensis)
Reptilia LTA4H 34
  • 74 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia lta4h 33
  • 68.37 (n)
(Danio rerio)
Actinopterygii lta4h 33 34
  • 64.92 (n)
African malaria mosquito
(Anopheles gambiae)
Insecta AgaP_AGAP009907 33
  • 54.17 (n)
fruit fly
(Drosophila melanogaster)
Insecta CG10602 35 33 34
  • 51.29 (n)
(Caenorhabditis elegans)
Secernentea ZC416.6 35 33 34
  • 53.14 (n)
C42C1.11 34
  • 45 (a)
baker's yeast
(Saccharomyces cerevisiae)
Saccharomycetes LAP2 33 34 36
  • 49.48 (n)
K. lactis yeast
(Kluyveromyces lactis)
Saccharomycetes KLLA0F03883g 33
  • 48.53 (n)
thale cress
(Arabidopsis thaliana)
eudicotyledons AT5G13520 33
  • 46.71 (n)
(Oryza sativa)
Liliopsida Os03g0819100 33
  • 46.1 (n)
(Triticum aestivum)
Liliopsida Ta.27066 33
sea squirt
(Ciona savignyi)
Ascidiacea -- 34
  • 50 (a)
fission yeast
(Schizosaccharomyces pombe)
Schizosaccharomycetes SPCC1322.05c 33
  • 49.1 (n)
bread mold
(Neurospora crassa)
Ascomycetes NCU06732 33
  • 48.17 (n)
Species where no ortholog for LTA4H was found in the sources mined by GeneCards:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • African clawed frog (Xenopus laevis)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • loblloly pine (Pinus taeda)
  • malaria parasite (Plasmodium falciparum)
  • medicago trunc (Medicago Truncatula)
  • moss (Physcomitrella patens)
  • orangutan (Pongo pygmaeus)
  • pig (Sus scrofa)
  • rainbow trout (Oncorhynchus mykiss)
  • rice blast fungus (Magnaporthe grisea)
  • schistosome parasite (Schistosoma mansoni)
  • sea anemone (Nematostella vectensis)
  • sea urchin (Strongylocentrotus purpuratus)
  • sorghum (Sorghum bicolor)
  • soybean (Glycine max)
  • stem rust fungus (Puccinia graminis)
  • sugarcane (Saccharum officinarum)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)

Evolution for LTA4H Gene

Gene Tree for LTA4H (if available)
Gene Tree for LTA4H (if available)

Paralogs for LTA4H Gene

Paralogs for LTA4H Gene

(2) SIMAP similar genes for LTA4H Gene using alignment to 3 proteins:

genes like me logo Genes that share paralogs with LTA4H: view

Variants for LTA4H Gene

Sequence variations from dbSNP and Humsavar for LTA4H Gene

SNP ID Clin Chr 12 pos Variation AA Info Type
rs142926035 not-provided, not provided 96,000,349(-) G/T downstream_transcript_variant
rs281860641 not-provided, not provided 96,036,093(-) G/A genic_upstream_transcript_variant, intron_variant, upstream_transcript_variant
rs1000078275 -- 96,010,791(-) T/C genic_downstream_transcript_variant, intron_variant
rs1000092576 -- 96,034,238(-) C/T intron_variant
rs1000140981 -- 96,005,249(-) C/T genic_downstream_transcript_variant, intron_variant

Structural Variations from Database of Genomic Variants (DGV) for LTA4H Gene

Variant ID Type Subtype PubMed ID
esv3630445 CNV gain 21293372
esv3630446 CNV loss 21293372
nsv523292 CNV gain 19592680
nsv7234 OTHER inversion 18451855

Variation tolerance for LTA4H Gene

Residual Variation Intolerance Score: 9.05% of all genes are more intolerant (likely to be disease-causing)
Gene Damage Index Score: 2.44; 42.92% of all genes are more intolerant (likely to be disease-causing)

Additional Variant Information for LTA4H Gene

SNPedia medical, phenotypic, and genealogical associations of SNPs for

SNP Genotyping and Copy Number Assay Products

No data available for Polymorphic Variants from UniProtKB/Swiss-Prot for LTA4H Gene

Disorders for LTA4H Gene

MalaCards: The human disease database

(3) MalaCards diseases for LTA4H Gene - From: DISEASES, Novoseek, and GeneCards

Disorder Aliases PubMed IDs
psoriasis 5
  • psoriasis 5, susceptibility to
tuberculous meningitis
  • tbm
myocardial infarction
  • myocardial infarction, susceptibility to
- elite association - COSMIC cancer census association via MalaCards
Search LTA4H in MalaCards View complete list of genes associated with diseases

Additional Disease Information for LTA4H

Genetic Association Database
Human Genome Epidemiology Navigator
ATLAS of Genetics and Cytogenetics in Oncology and Haematology
genes like me logo Genes that share disorders with LTA4H: view

No data available for UniProtKB/Swiss-Prot and Genatlas for LTA4H Gene

Publications for LTA4H Gene

  1. Cloning and characterization of the human leukotriene A4 hydrolase gene. (PMID: 7628486) Mancini JA … Evans JF (European journal of biochemistry 1995) 2 3 4 22 58
  2. The role of LTA4H and ALOX5AP genes in the risk for asthma in Latinos. (PMID: 20067482) Via M … Genetics of Asthma in Latino Americans (GALA) Study (Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology 2010) 3 22 44 58
  3. 5-lipoxygenase pharmacogenetics in asthma: overlap with Cys-leukotriene receptor antagonist loci. (PMID: 19214143) Tantisira KG … Weiss ST (Pharmacogenetics and genomics 2009) 3 22 44 58
  4. Genetic effects in the leukotriene biosynthesis pathway and association with atherosclerosis. (PMID: 19130089) Crosslin DR … Hauser ER (Human genetics 2009) 3 22 44 58
  5. Sex-specific association of depression and a haplotype in leukotriene A4 hydrolase gene. (PMID: 19622707) Zhao J … Vaccarino V (Psychosomatic medicine 2009) 3 22 44 58

Products for LTA4H Gene

Sources for LTA4H Gene

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