3daa
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CRYSTALLOGRAPHIC STRUCTURE OF D-AMINO ACID AMINOTRANSFERASE INACTIVATED BY PYRIDOXYL-D-ALANINE
OverviewOverview
The three-dimensional structures of two forms of the D-amino acid, aminotransferase (D-aAT) from Bacillus sp. YM-1 have been determined, crystallographically: the pyridoxal phosphate (PLP) form and a complex, with the reduced analogue of the external aldimine, N-(5'-phosphopyridoxyl)-d-alanine (PPDA). Together with the previously, reported pyridoxamine phosphate form of the enzyme [Sugio et al. (1995), Biochemistry 34, 9661], these structures allow us to describe the pathway, of the enzymatic reaction in structural terms. A major determinant of the, enzyme's stereospecificity for D-amino acids is a group of three residues, (Tyr30, Arg98, and His100, with the latter two contributed by the, neighboring subunit) forming four hydrogen bonds to the substrate, alpha-carboxyl group. The ... [(full description)]
About this StructureAbout this Structure
3DAA is a [Single protein] structure of sequence from [Bacillus sp.] with PDD as [ligand]. Active as [[1]], with EC number [2.6.1.21]. Full crystallographic information is available from [OCA].
ReferenceReference
Crystallographic study of steps along the reaction pathway of D-amino acid aminotransferase., Peisach D, Chipman DM, Van Ophem PW, Manning JM, Ringe D, Biochemistry. 1998 Apr 7;37(14):4958-67. PMID:9538014
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