Free for academic non-profit institutions. Other users need a Commercial license

Aliases for HADHB Gene

Aliases for HADHB Gene

  • Hydroxyacyl-CoA Dehydrogenase/3-Ketoacyl-CoA Thiolase/Enoyl-CoA Hydratase (Trifunctional Protein), Beta Subunit 2 3
  • Hydroxyacyl-Coenzyme A Dehydrogenase/3-Ketoacyl-Coenzyme A Thiolase/Enoyl-Coenzyme A Hydratase (Trifunctional Protein), Beta Subunit 2 3
  • TP-BETA 3 4
  • 3-Ketoacyl-Coenzyme A (CoA) Thiolase Of Mitochondrial Trifunctional Protein, Beta Subunit 3
  • 2-Enoyl-Coenzyme A (CoA) Hydratase, Beta Subunit 3
  • Trifunctional Enzyme Subunit Beta, Mitochondrial 3
  • Mitochondrial Trifunctional Protein 2
  • Acetyl-CoA Acyltransferase 3
  • Beta-Ketothiolase 3
  • Beta Subunit 2
  • EC 63
  • EC 2.3.1 63
  • MSTP029 3
  • ECHB 3
  • MTPB 3

External Ids for HADHB Gene

Previous GeneCards Identifiers for HADHB Gene

  • GC02P026389
  • GC02P026560
  • GC02P026442
  • GC02P026379
  • GC02P026321
  • GC02P026466
  • GC02P026213

Summaries for HADHB Gene

Entrez Gene Summary for HADHB Gene

  • This gene encodes the beta subunit of the mitochondrial trifunctional protein, which catalyzes the last three steps of mitochondrial beta-oxidation of long chain fatty acids. The mitochondrial membrane-bound heterocomplex is composed of four alpha and four beta subunits, with the beta subunit catalyzing the 3-ketoacyl-CoA thiolase activity. The encoded protein can also bind RNA and decreases the stability of some mRNAs. The genes of the alpha and beta subunits of the mitochondrial trifunctional protein are located adjacent to each other in the human genome in a head-to-head orientation. Mutations in this gene result in trifunctional protein deficiency. Alternatively spliced transcript variants encoding different isoforms have been described. [provided by RefSeq, Jul 2013]

GeneCards Summary for HADHB Gene

HADHB (Hydroxyacyl-CoA Dehydrogenase/3-Ketoacyl-CoA Thiolase/Enoyl-CoA Hydratase (Trifunctional Protein), Beta Subunit) is a Protein Coding gene. Diseases associated with HADHB include trifunctional protein deficiency and mitochondrial trifunctional protein deficiency. Among its related pathways are Metabolism and Metabolism. GO annotations related to this gene include protein complex binding and fatty-acyl-CoA binding. An important paralog of this gene is ACAT2.

Gene Wiki entry for HADHB Gene

No data available for UniProtKB/Swiss-Prot , Tocris Summary , PharmGKB "VIP" Summary , fRNAdb sequence ontologies and piRNA Summary for HADHB Gene

Genomics for HADHB Gene

Regulatory Elements for HADHB Gene

Epigenetics Products

  • DNA Methylation CpG Assay Predesigned for Pyrosequencing in human,mouse,rat

Genomic Location for HADHB Gene

26,243,170 bp from pter
26,290,468 bp from pter
47,299 bases
Plus strand

Genomic View for HADHB Gene

UCSC Golden Path with GeneCards custom track
Cytogenetic band:
Genomic Location for HADHB Gene
GeneLoc Logo Genomic Neighborhood Exon StructureGene Density

RefSeq DNA sequence for HADHB Gene

Proteins for HADHB Gene

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

    Protein Symbol:
    Recommended name:
    Trifunctional enzyme subunit beta, mitochondrial
    Protein Accession:
    Secondary Accessions:
    • B2RB16
    • B4E2W0
    • O14969
    • Q53TA6
    • Q96C77
    • Q9H3F5
    • Q9T2V8

    Protein attributes for HADHB Gene

    474 amino acids
    Molecular mass:
    51294 Da
    Quaternary structure:
    • Octamer of 4 alpha (HADHA) and 4 beta (HADHB) subunits. Interacts with RSAD2/viperin.
    • Sequence=BAA22061.1; Type=Erroneous gene model prediction; Evidence={ECO:0000305};

    Alternative splice isoforms for HADHB Gene


neXtProt entry for HADHB Gene

Proteomics data for HADHB Gene at MOPED

Post-translational modifications for HADHB Gene

  • Ubiquitination at Lys72 and Lys268
  • Modification sites at PhosphoSitePlus

Other Protein References for HADHB Gene

Antibody Products

Domains for HADHB Gene

Graphical View of Domain Structure for InterPro Entry



  • Belongs to the thiolase family.
  • Belongs to the thiolase family.
genes like me logo Genes that share domains with HADHB: view

No data available for Gene Families for HADHB Gene

Function for HADHB Gene

Molecular function for HADHB Gene

GENATLAS Biochemistry:
mitochondrial,membrane bound fatty acid beta-oxidation trifunctional enzyme,beta subunit,harboring the long chain 3-oxoacyl-CoA thiolase
UniProtKB/Swiss-Prot CatalyticActivity:
Acyl-CoA + acetyl-CoA = CoA + 3-oxoacyl-CoA.

Enzyme Numbers (IUBMB) for HADHB Gene

Gene Ontology (GO) - Molecular Function for HADHB Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0000062 fatty-acyl-CoA binding IEA --
GO:0003824 catalytic activity --
GO:0003857 3-hydroxyacyl-CoA dehydrogenase activity TAS 1550553
GO:0003988 acetyl-CoA C-acyltransferase activity IEA --
GO:0004300 enoyl-CoA hydratase activity IEA --
genes like me logo Genes that share ontologies with HADHB: view
genes like me logo Genes that share phenotypes with HADHB: view

Animal Model Products

miRNA for HADHB Gene

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for HADHB

In Situ Assay Products

Flow Cytometry Products

No data available for Animal Models , Transcription Factor Targeting and HOMER Transcription for HADHB Gene

Localization for HADHB Gene

Subcellular locations from UniProtKB/Swiss-Prot for HADHB Gene

Mitochondrion. Mitochondrion inner membrane. Mitochondrion outer membrane. Endoplasmic reticulum.

Subcellular locations from

Jensen Localization Image for HADHB Gene COMPARTMENTS Subcellular localization image for HADHB gene
Compartment Confidence
endoplasmic reticulum 5
mitochondrion 5
nucleus 3
peroxisome 2
plasma membrane 1

Gene Ontology (GO) - Cellular Components for HADHB Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0005739 mitochondrion NAS 7958339
GO:0005740 mitochondrial envelope TAS 1550553
GO:0005741 mitochondrial outer membrane IDA 21527675
GO:0005743 mitochondrial inner membrane TAS --
GO:0005783 endoplasmic reticulum IDA 21527675
genes like me logo Genes that share ontologies with HADHB: view

Pathways for HADHB Gene

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

PCR Array Products

  • Pathway & Disease-focused RT² Profiler PCR Arrays

UniProtKB/Swiss-Prot P55084-ECHB_HUMAN

  • Pathway: Lipid metabolism; fatty acid beta-oxidation

Gene Ontology (GO) - Biological Process for HADHB Gene

GO ID Qualified GO term Evidence PubMed IDs
GO:0006635 fatty acid beta-oxidation TAS --
GO:0006644 phospholipid metabolic process TAS --
GO:0008152 metabolic process --
GO:0035965 cardiolipin acyl-chain remodeling TAS --
GO:0044255 cellular lipid metabolic process TAS --
genes like me logo Genes that share ontologies with HADHB: view

Compounds for HADHB Gene

(58) HMDB Compounds for HADHB Gene

Compound Synonyms Cas Number PubMed IDs
  • (E)-S-2-decenoate Coenzyme A
  • 2-trans-Dodecenoyl-Coenzyme A
  • trans-2-Hexadecenoyl-CoA
  • (E)-S-2-octenoate Coenzyme A
  • (2E)-Tetradecenoyl-Coenzyme A

(29) Novoseek inferred chemical compound relationships for HADHB Gene

Compound -log(P) Hits PubMed IDs
3-ketopalmitoyl-coa 90.7 1
i-bop 86.5 3
thromboxane a2 84.3 23
trimetazidine 81.1 7
acyl-coa 78.6 18
genes like me logo Genes that share compounds with HADHB: view

Transcripts for HADHB Gene

Unigene Clusters for HADHB Gene

Hydroxyacyl-CoA dehydrogenase/3-ketoacyl-CoA thiolase/enoyl-CoA hydratase (trifunctional protein), beta subunit:
Representative Sequences:

Inhibitory RNA Products

  • Predesigned siRNA for gene silencing in human,mouse,rat for HADHB

Flow Cytometry Products

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

ExUns: 1a · 1b · 1c ^ 2 ^ 3a · 3b ^ 4 ^ 5 ^ 6 ^ 7 ^ 8 ^ 9 ^ 10a · 10b ^ 11 ^ 12 ^ 13 ^ 14 ^ 15 ^ 16a · 16b ^ 17a · 17b
SP1: - -
SP2: -
SP4: - - - -
SP5: - - - -
SP8: -

Relevant External Links for HADHB Gene

GeneLoc Exon Structure for
ECgene alternative splicing isoforms for

Expression for HADHB Gene

mRNA expression in normal human tissues for HADHB Gene

mRNA expression in embryonic tissues and stem cells from LifeMap Discovery

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

This gene is overexpressed in Heart - Left Ventricle (7.6) and Muscle - Skeletal (6.9).

Protein differential expression in normal tissues for HADHB Gene

This gene is overexpressed in Heart (8.0).

Integrated Proteomics: protein expression from ProteomicsDB, PaxDb, MOPED, and MaxQB for HADHB Gene

SOURCE GeneReport for Unigene cluster for HADHB Gene Hs.515848

genes like me logo Genes that share expressions with HADHB: view

Expression partners for HADHB Gene

* - Elite partner

Primer Products

In Situ Assay Products

No data available for mRNA Expression by UniProt/SwissProt for HADHB Gene

Orthologs for HADHB Gene

This gene was present in the common ancestor of animals and fungi.

Orthologs for HADHB Gene

Organism Taxonomy Gene Similarity Type Details
(Bos Taurus)
Mammalia HADHB 35
  • 90.72 (n)
  • 91.98 (a)
  • 92 (a)
(Canis familiaris)
Mammalia HADHB 35
  • 91.47 (n)
  • 94.29 (a)
-- 36
  • 94 (a)
-- 36
  • 65 (a)
(Mus musculus)
Mammalia Hadhb 35
  • 88.94 (n)
  • 91.12 (a)
Hadhb 16
Hadhb 36
  • 91 (a)
(Pan troglodytes)
Mammalia HADHB 35
  • 99.79 (n)
  • 100 (a)
  • 100 (a)
(Rattus norvegicus)
Mammalia Hadhb 35
  • 88.65 (n)
  • 89.85 (a)
(Monodelphis domestica)
Mammalia HADHB 36
  • 85 (a)
(Ornithorhynchus anatinus)
Mammalia -- 36
  • 88 (a)
-- 36
  • 88 (a)
(Gallus gallus)
Aves HADHB 35
  • 74.79 (n)
  • 83.9 (a)
  • 84 (a)
(Anolis carolinensis)
Reptilia HADHB 36
  • 80 (a)
tropical clawed frog
(Silurana tropicalis)
Amphibia hadhb 35
  • 75.23 (n)
  • 84.15 (a)
MGC75788 35
African clawed frog
(Xenopus laevis)
Amphibia thiolase-prov 35
(Danio rerio)
Actinopterygii hadhb 35
  • 71.22 (n)
  • 79.1 (a)
wufb14g10 35
hadhb 36
  • 77 (a)
fruit fly
(Drosophila melanogaster)
Insecta Thiolase 37
  • 67 (a)
Thiolase 35
  • 62.99 (n)
  • 68.92 (a)
Thiolase 36
  • 65 (a)
African malaria mosquito
(Anopheles gambiae)
Insecta AgaP_AGAP011827 35
  • 62.9 (n)
  • 72.04 (a)
(Caenorhabditis elegans)
Secernentea B0303.3 37
  • 61 (a)
B0303.3 35
  • 62.46 (n)
  • 62.39 (a)
B0303.3 36
  • 61 (a)
baker's yeast
(Saccharomyces cerevisiae)
Saccharomycetes ERG10 36
  • 33 (a)
sea squirt
(Ciona intestinalis)
Ascidiacea Cin.4219 35
sea squirt
(Ciona savignyi)
Ascidiacea CSA.1756 36
  • 65 (a)
Species with no ortholog for HADHB:
  • A. gosspyii yeast (Ashbya gossypii)
  • Actinobacteria (Mycobacterium tuberculosis)
  • Alicante grape (Vitis vinifera)
  • alpha proteobacteria (Wolbachia pipientis)
  • amoeba (Dictyostelium discoideum)
  • Archea (Pyrococcus horikoshii)
  • barley (Hordeum vulgare)
  • beta proteobacteria (Neisseria meningitidis)
  • bread mold (Neurospora crassa)
  • Chromalveolata (Phytophthora infestans)
  • common water flea (Daphnia pulex)
  • corn (Zea mays)
  • E. coli (Escherichia coli)
  • filamentous fungi (Aspergillus nidulans)
  • Firmicute bacteria (Streptococcus pneumoniae)
  • fission yeast (Schizosaccharomyces pombe)
  • green algae (Chlamydomonas reinhardtii)
  • honey bee (Apis mellifera)
  • K. lactis yeast (Kluyveromyces lactis)
  • 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 (Oryza sativa)
  • 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)
  • thale cress (Arabidopsis thaliana)
  • tomato (Lycopersicon esculentum)
  • toxoplasmosis (Toxoplasma gondii)
  • Trichoplax (Trichoplax adhaerens)
  • wheat (Triticum aestivum)

Evolution for HADHB Gene

Gene Tree for HADHB (if available)
Gene Tree for HADHB (if available)

Paralogs for HADHB Gene

Paralogs for HADHB Gene

(4) SIMAP similar genes for HADHB Gene using alignment to 8 proteins: Pseudogenes for HADHB Gene

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

Variants for HADHB Gene

Sequence variations from dbSNP and Humsavar for HADHB Gene

SNP ID Clin Chr 02 pos Sequence Context AA Info Type MAF
rs1056389 -- 26,280,007(+) ACAGT(C/T)ACCAA synonymous-codon, reference
rs1056471 -- 26,290,089(+) AAATA(C/G)TTTGC utr-variant-3-prime
rs1056601 -- 26,290,390(+) TAAAC(A/C)CCACT utr-variant-3-prime
rs1056603 -- 26,290,393(+) ACACC(A/C)CTGAA utr-variant-3-prime
rs1056632 -- 26,289,865(+) TGTAC(G/T)AGGTG intron-variant

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

Variant ID Type Subtype PubMed ID
esv33316 CNV Loss 17666407
esv267941 CNV Insertion 20981092
esv273638 CNV Insertion 20981092
esv1501344 CNV Insertion 17803354
esv2719825 CNV Deletion 23290073

Relevant External Links for HADHB Gene

HapMap Linkage Disequilibrium report
Human Gene Mutation Database (HGMD)

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

Disorders for HADHB Gene

(1) OMIM Diseases for HADHB Gene (143450)


  • Trifunctional protein deficiency (TFP deficiency) [MIM:609015]: The clinical manifestations are very variable and include hypoglycemia, cardiomyopathy and sudden death. Phenotypes with mainly hepatic and neuromyopathic involvement can also be distinguished. Biochemically, TFP deficiency is defined by the loss of all three enzyme activities of the TFP complex. {ECO:0000269 PubMed:12754706, ECO:0000269 PubMed:8651282, ECO:0000269 PubMed:9259266}. Note=The disease is caused by mutations affecting the gene represented in this entry.

(13) Novoseek inferred disease relationships for HADHB Gene

Disease -log(P) Hits PubMed IDs
rhizomelic chondrodysplasia punctata, type 1 85.8 2
chondrodysplasia punctata rhizomelic 80.6 1
d-bifunctional protein deficiency 79.4 2
zellweger syndrome 76.7 1
peroxisomal disorders 74.1 2

Relevant External Links for HADHB

Genetic Association Database (GAD)
Human Genome Epidemiology (HuGE) Navigator
genes like me logo Genes that share disorders with HADHB: view

No data available for University of Copenhagen DISEASES and Genatlas for HADHB Gene

Publications for HADHB Gene

  1. Mitochondrial trifunctional protein deficiency. Catalytic heterogeneity of the mutant enzyme in two patients. (PMID: 8163672) Kamijo T. … Hashimoto T. (J. Clin. Invest. 1994) 3 4 23
  2. Molecular characterization of mitochondrial trifunctional protein deficiency: formation of the enzyme complex is important for stabilization of both alpha- and beta-subunits. (PMID: 8651282) Ushikubo S. … Hashimoto T. (Am. J. Hum. Genet. 1996) 3 4 23
  3. Genomic and mutational analysis of the mitochondrial trifunctional protein beta-subunit (HADHB) gene in patients with trifunctional protein deficiency. (PMID: 9259266) Orii K.E. … Hashimoto T. (Hum. Mol. Genet. 1997) 3 4 23
  4. Fluorescence in situ hybridization mapping of the alpha and beta subunits (HADHA and HADHB) of human mitochondrial fatty acid beta-oxidation multienzyme complex to 2p23 and their evolution. (PMID: 9605857) Aoyama T. … Fukushima Y. (Cytogenet. Cell Genet. 1997) 2 3 23
  5. Human liver long-chain 3-hydroxyacyl-coenzyme A dehydrogenase is a multifunctional membrane-bound beta-oxidation enzyme of mitochondria. (PMID: 1550553) Carpenter K. … Middleton B. (Biochem. Biophys. Res. Commun. 1992) 3 23

Products for HADHB Gene

Sources for HADHB Gene

Back to Top