| ID | Sequence | Length | GC content |
|---|---|---|---|
| ACUUGGACCUGAACCUUGCUCCGAGAGGGAGUCCUCGCGGACGUCAGCC… | 1997 nt | 0.4432 | |
| ACUUGGACCUGAACCUUGCUCCGAGAGGGAGUCCUCGCGGACGUCAGCC… | 1952 nt | 0.4431 | |
| ACUUGGACCUGAACCUUGCUCCGAGAGGGAGUCCUCGCGGACGUCAGCC… | 2080 nt | 0.4428 |
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]
A study in rats demonstrated that the HADHB was identified as a potential RNA marker for methamphetamine reward and addiction, showing a down-down regulated expression pattern in whisker follicles after self-administration and withdrawal [Song et al. DOI:10.1038/s41598-018-29772-1]. In a separate study using a mouse model of myotonic dystrophy, the HADHB was found to be downregulated at the mRNA level in heart tissue from double knockout mice and was associated with dilated cardiomyopathy, with immunoblotting confirming a 25% reduction in protein levels [Lee et al. DOI:10.1093/hmg/ddac108].