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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

The purification and characterization of glutaryl-coenzyme A dehydrogenase from porcine and human liver.

Glutaryl-CoA dehydrogenase, a multifunctional enzyme responsible for dehydrogenation and decarboxylation of glutaryl-CoA to crotonyl-CoA, has been purified 1,680-fold from porcine liver mitochondria. The purified porcine enzyme has a subunit molecular weight of 47,800 and a native molecular weight of 190,500. Porcine glutaryl-CoA dehydrogenase catalyzed the conversion of [1,5-14C]glutaryl-CoA to [14C] crotonyl-CoA and 14CO2 in a 1:1:1 ratio. The porcine enzyme has Km values for electron transfer flavoprotein and glutaryl-CoA of 1.1 and 3.3 microM, respectively, and turnover numbers of 860 mol of electron transfer flavoprotein/min/ mol of glutaryl-CoA dehydrogenase and 327 mol of glutaryl-CoA/min/ mol of glutaryl-CoA dehydrogenase. Human glutaryl-CoA dehydrogenase has been purified 1,278-fold from human liver mitochondria. The purified human enzyme has a subunit molecular weight of 58,800 and a native molecular weight of 256,000. Human glutaryl-CoA dehydrogenase showed a reaction of only partial identity when compared to porcine glutaryl-CoA dehydrogenase by Ouchterlony double immunodiffusion analysis using antiserum raised against and monospecific for porcine glutaryl-CoA dehydrogenase.[1]

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