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EC 1.2.4.2 Details
EC number
1.2.4.2
Accepted name
oxoglutarate dehydrogenase (succinyl-transferring)
Reaction
2-oxoglutarate + [dihydrolipoyllysine-residue succinyltransferase] lipoyllysine = [dihydrolipoyllysine-residue succinyltransferase] S-succinyldihydrolipoyllysine + CO2
Other name(s)
2-ketoglutarate dehydrogenase, 2-oxoglutarate dehydrogenase, 2-oxoglutarate: lipoate oxidoreductase, 2-oxoglutarate:lipoamide 2-oxidoreductase (decarboxylating and acceptor-succinylating), α-ketoglutarate dehydrogenase, alphaketoglutaric acid dehydrogenase, α-ketoglutaric dehydrogenase, α-oxoglutarate dehydrogenase, AKGDH, OGDC, ketoglutaric dehydrogenase, oxoglutarate decarboxylase (misleading), oxoglutarate dehydrogenase, oxoglutarate dehydrogenase (lipoamide)
Systematic name
2-oxoglutarate:[dihydrolipoyllysine-residue succinyltransferase]-lipoyllysine 2-oxidoreductase (decarboxylating, acceptor-succinylating)
CAS registry number
9031-02-1
Comment
Contains thiamine diphosphate. It is a component of the multienzyme 2-oxoglutarate dehydrogenase complex, EC 1.2.1.105, in which multiple copies of it are bound to a core of molecules of EC 2.3.1.61, dihydrolipoyllysine-residue succinyltransferase, which also binds multiple copies of EC 1.8.1.4, dihydrolipoyl dehydrogenase. It does not act on free lipoamide or lipoyllysine, but only on the lipoyllysine residue in EC 2.3.1.61.
History
created 1961, modified 1980, modified 1986, modified 2003
EC Tree
1.2.4.3 created 1972, deleted 1978