Aliases for IDH3B Gene
External Ids for IDH3B Gene
Previous GeneCards Identifiers for IDH3B Gene
Isocitrate dehydrogenases catalyze the oxidative decarboxylation of isocitrate to 2-oxoglutarate. These enzymes belong to two distinct subclasses, one of which utilizes NAD(+) as the electron acceptor and the other NADP(+). Five isocitrate dehydrogenases have been reported: three NAD(+)-dependent isocitrate dehydrogenases, which localize to the mitochondrial matrix, and two NADP(+)-dependent isocitrate dehydrogenases, one of which is mitochondrial and the other predominantly cytosolic. NAD(+)-dependent isocitrate dehydrogenases catalyze the allosterically regulated rate-limiting step of the tricarboxylic acid cycle. Each isozyme is a heterotetramer that is composed of two alpha subunits, one beta subunit, and one gamma subunit. The protein encoded by this gene is the beta subunit of one isozyme of NAD(+)-dependent isocitrate dehydrogenase. Multiple alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Sep 2016]
GeneCards Summary for IDH3B Gene
IDH3B (Isocitrate Dehydrogenase (NAD(+)) 3 Non-Catalytic Subunit Beta) is a Protein Coding gene. Diseases associated with IDH3B include Retinitis Pigmentosa 46 and Retinitis Pigmentosa. Among its related pathways are Carbon metabolism and Pyruvate metabolism and Citric Acid (TCA) cycle. Gene Ontology (GO) annotations related to this gene include magnesium ion binding and NAD binding. An important paralog of this gene is IDH3G.
UniProtKB/Swiss-Prot Summary for IDH3B Gene
Plays a structural role to facilitate the assembly and ensure the full activity of the enzyme catalyzing the decarboxylation of isocitrate (ICT) into alpha-ketoglutarate. The heterodimer composed of the alpha (IDH3A) and beta (IDH3B) subunits and the heterodimer composed of the alpha (IDH3A) and gamma (IDH3G) subunits, have considerable basal activity but the full activity of the heterotetramer (containing two subunits of IDH3A, one of IDH3B and one of IDH3G) requires the assembly and cooperative function of both heterodimers.