Mutations in an essential metabolic enzyme, isocitrate dehydrogenase (IDH), were found in many cancers. The impact of IDH1 and IDH2 proteoforms mutations can vary and de-pend on the cancer type and other genetic alterations. The wild-type IDH1/2 consists of two identical subunits, but the mutant enzyme is a heterodimer of mutant and wild-type subunits, while the mutant homodimer loses its catalytic activity.
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