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Hyperlysinemia has an autosomal recessive pattern of inheritance. Hyperlysinemia is inherited in an autosomal recessive manner. [2] This means the defective gene responsible for the disorder is located on an autosome, and two copies of the defective gene (one inherited from each parent) are required in order to be born with the disorder.
α-ketoglutarate + NAD + + CoA → Succinyl CoA + CO 2 + NADH Oxoglutarate dehydrogenase (α-Ketoglutarate dehydrogenase) This reaction proceeds in three steps: decarboxylation of α-ketoglutarate, reduction of NAD + to NADH, and subsequent transfer to CoA, which forms the end product, succinyl CoA. ΔG°' for this reaction is -7.2 kcal mol −1.
Alpha-ketoglutarate dehydrogenase also known as 2-oxoglutarate dehydrogenase E1 component, mitochondrial is an enzyme that in humans is encoded by the OGDH gene. [ 5 ] [ 6 ] [ 7 ] Structure
α-Ketoglutarate is a component of the citric acid cycle, a cyclical metabolic pathway located in the mitochondria.This cycle supplies the energy that cells need by sequentially metabolizing (indicated by →) citrate through seven intermediate metabolites and then converting the eighth intermediate metabolite, oxaloacetate, back to citrate: [2]
This enzyme complex catalyzes the oxidative decarboxylation of branched, short-chain alpha-ketoacids. BCKDC is a member of the mitochondrial α-ketoacid dehydrogenase complex family, which also includes pyruvate dehydrogenase and alpha-ketoglutarate dehydrogenase, key enzymes that function in the Krebs cycle.
Lysine Degradation Steps Catalyzed by Alpha-aminoadipic semialdehyde dehydrogenase. First, the N-terminal portion of this enzyme which contains lysine-ketoglutarate reductase (LOR/LKR) activity (EC:1.5.1.8) condenses lysine and 2-oxoglutarate to a molecule called saccharopine (Reaction 1 on the figure to the right).
NAD + (or NADP +) is a cofactor for the glutamate dehydrogenase reaction, producing α-ketoglutarate and ammonium as a byproduct. [4] [8]Based on which cofactor is used, glutamate dehydrogenase enzymes are divided into the following three classes: [citation needed]
Lysyl hydroxylases (or procollagen-lysine 5-dioxygenases) are alpha-ketoglutarate-dependent hydroxylases enzymes that catalyze the hydroxylation of lysine to hydroxylysine. [1] [2] Lysyl hydroxylases require iron and vitamin C as cofactors for their oxidation activity.