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leucine dehydrogenase oktamer, Sporosarcina psychrophila
leucine dehydrogenase oktamer, Sporosarcina psychrophila

In enzymology, a leucine dehydrogenase (EC 1.4.1.9 [19] ) is an enzyme that catalyzes the chemical reaction

The 3 substrates of this enzyme are L-leucine, H2O, and NAD+, whereas its 4 products are 4-methyl-2-oxopentanoate, NH3, NADH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH2 group of donors with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is L-leucine:NAD+ oxidoreductase (deaminating). Other names in common use include L-leucine dehydrogenase, L-leucine:NAD+ oxidoreductase, deaminating, and LeuDH. This enzyme participates in valine, leucine and isoleucine degradation and valine, leucine and isoleucine biosynthesis.

Structural studies


As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code 1LEH [20] .

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