Aliases for HADHB Gene
- Hydroxyacyl-CoA Dehydrogenase Trifunctional Multienzyme Complex Subunit Beta 2 3 5
- Hydroxyacyl-Coenzyme A Dehydrogenase/3-Ketoacyl-Coenzyme A Thiolase/Enoyl-Coenzyme A Hydratase (Trifunctional Protein), Beta Subunit 2 3
- Hydroxyacyl-CoA Dehydrogenase/3-Ketoacyl-CoA Thiolase/Enoyl-CoA Hydratase (Trifunctional Protein), Beta Subunit 2 3
- Trifunctional Enzyme Subunit Beta, Mitochondrial 3 4
- MTPB 2 3
- 3-Ketoacyl-Coenzyme A (CoA) Thiolase Of Mitochondrial Trifunctional Protein, Beta Subunit 3
- Mitochondrial Trifunctional Protein, Beta Subunit 2
- 2-Enoyl-Coenzyme A (CoA) Hydratase, Beta Subunit 3
External Ids for HADHB Gene
Previous GeneCards Identifiers 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 Trifunctional Multienzyme Complex Subunit Beta) is a Protein Coding gene. Diseases associated with HADHB include Mitochondrial Trifunctional Protein Deficiency and Long-Chain 3-Hydroxyacyl-Coa Dehydrogenase Deficiency. Among its related pathways are alpha-linolenic (omega3) and linoleic (omega6) acid metabolism and Glycerophospholipid biosynthesis. Gene Ontology (GO) annotations related to this gene include transferase activity, transferring acyl groups other than amino-acyl groups. An important paralog of this gene is ACAA1.
UniProtKB/Swiss-Prot Summary for HADHB Gene
Mitochondrial trifunctional enzyme catalyzes the last three of the four reactions of the mitochondrial beta-oxidation pathway (PubMed:8135828, PubMed:29915090, PubMed:30850536). The mitochondrial beta-oxidation pathway is the major energy-producing process in tissues and is performed through four consecutive reactions breaking down fatty acids into acetyl-CoA (PubMed:29915090). Among the enzymes involved in this pathway, the trifunctional enzyme exhibits specificity for long-chain fatty acids (PubMed:30850536). Mitochondrial trifunctional enzyme is a heterotetrameric complex composed of two proteins, the trifunctional enzyme subunit alpha/HADHA carries the 2,3-enoyl-CoA hydratase and the 3-hydroxyacyl-CoA dehydrogenase activities, while the trifunctional enzyme subunit beta/HADHB described here bears the 3-ketoacyl-CoA thiolase activity (PubMed:8135828, PubMed:29915090, PubMed:30850536).