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Hydroxyacid-oxoacid transhydrogenase (HOT) involved in gamma-hydroxybutyrate metabolism. Hydroxyacid-oxoacid transhydrogenase (HOT), also known as D-2-hydroxyglutarate transhydrogenase. It catalyzes the conversion of gamma-hydroxybutyrate (GHB) to succinic semialdehyde (SSA), coupled to the stoichiometric conversion of alpha-ketoglutarate to D-2-hydroxyglutarate in gamma-Hydroxybutyrate catabolism. Unlike many other alcohols, which are oxidized by NAD-linked dehydrogenases, gamma-hydroxybutyrate is metabolized to succinate semialdehyde by hydroxyacid-oxoacid transhydrogenase which does not require free NAD or NADP, but instead using alpha -ketoglutarate as an acceptor, converting it to d-2-hydroxyglutarate. Alpha-ketoglutarate serves as an intermediate acceptor to regenerate NAD(P) required for the oxidation of GHB. HOT also catalyzes the reversible oxidation of a hydroxyacid obligatorily coupled to the reduction of an oxoacid, and requires no cofactor. In mammals, the HOT enzyme is located in mitochondria, and is expressed with an N-terminal mitochondrial targeting sequence. HOT enzyme is member of the metal-containing alcohol dehydrogenase family. They typically contain an iron although other metal ions may be used.
No pairwise interactions are available for this conserved domain.
Tips:  If you've navigated here from a protein, hovering over a position on the weblogo will display the corresponding protein position for that domain position. The histograms below the weblogo indicate mutations found on the domain. Red is for disease (OMIM) and blue is for SNPs. Functional Features are displayed as orange boxes under the histograms. You can choose which features are displayed in the box below. Range on the Protein: Protein ID Protein Position Domain Position: 
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