Watanabe Y, Muro T, Sugihara A, Shimada Y, Nagao T, Takenishi S, Tominaga Y. A unique enzyme from Saccharothrix sp. catalyzing D-amino acid transfer.
BIOCHIMICA ET BIOPHYSICA ACTA 1997;
1337:40-6. [PMID:
9003435 DOI:
10.1016/s0167-4838(96)00147-1]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A newly isolated actinomycete belonging to Saccharothrix sp. was found to produce a unique enzyme catalyzing D-amino acid transfer. The enzyme, which was tentatively named D-amino acid transferase, was purified 2600-fold to electrophoretic homogeneity and the molecular mass was 41 kDa. The enzyme was D-configuration specific and recognized aromatic D-amino acid esters to form oligo D-amino acid esters. D-Phenylalanine ester was favored as substrate over other D-amino acid esters. The optimum conditions for oligo D-phenylalanine ester formation by D-amino acid transferase were pH 7.0 and 40 degrees C. The enzyme was inhibited by DAN, EPNP and DFP.
Collapse