Article
Construction and analyses of tetrameric forms of yeast NAD+-specific isocitrate dehydrogenase.
Biochemistry - 18 Jan 2011
Lin An-Ping, Demeler Borries, Minard Karyl I, Anderson Sondra L, Schirf Virgil, Galaleldeen Ahmad, McAlister-Henn Lee
Abstract excerpt
Yeast NAD(+)-specific isocitrate dehydrogenase (IDH) is an octameric enzyme composed of four heterodimers of regulatory IDH1 and catalytic IDH2 subunits. The crystal structure suggested that the interactions between tetramers in the octamer are restricted to defined regions in IDH1 subunits from each tetramer. Using truncation and mutagenesis, we constructed three tetrameric forms of IDH. Truncation of five...
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