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Publication Abstract from PubMed

The activation of the beta-carboxyl group of aspartate catalyzed by aspartokinase is the commitment step to amino-acid biosynthesis in the aspartate pathway. The first structure of a microbial aspartokinase, that from Methanococcus jannaschii, has been determined in the presence of the amino-acid substrate L-aspartic acid and the nucleotide product MgADP. The enzyme assembles into a dimer of dimers, with the interfaces mediated by both the N- and C-terminal domains. The active-site functional groups responsible for substrate binding and specificity have been identified and roles have been proposed for putative catalytic functional groups.

The initial step in the archaeal aspartate biosynthetic pathway catalyzed by a monofunctional aspartokinase.,Faehnle CR, Liu X, Pavlovsky A, Viola RE Acta Crystallogr Sect F Struct Biol Cryst Commun. 2006 Oct 1;62(Pt, 10):962-6. Epub 2006 Sep 30. PMID:17012784^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.