The isolation and sequencing of the complete cDNA coding for a D-aspartate oxidase, as well as the overexpression of the recombinant active enzyme, are reported for the first time. This 2022 bp cDNA, beside the coding portion, comprises a 5' untranslated tract and the whole 3' region including the polyadenylation signal and the poly(A) tail. The encoded protein comprises 341 amino acids, with the last three residues (-Ser-Lys-Leu) representing a peroxisomal targeting signal 1 (PTS1), hitherto unknown for this protein. The overexpression of recombinant D-aspartate oxidase was achieved in a prokaryotic system, and a soluble and active enzyme was obtained which accounted for about 10% of total bacterial protein. Comparisons with the known cDNAs for mammalian D-amino acid oxidase, another peroxisomal enzyme, are also made. The close structural and functional similarities shared by these enzymes at the protein level are not reflected at the nucleic acid level.

cDNA cloning and expression of the flavoprotein D-aspartate oxidase from bovine kidney cortex / T. Simonic, S. Duga, A. Negri, G. Tedeschi, M. Malcovati, M.L. Tenchini, S. Ronchi. - In: BIOCHEMICAL JOURNAL. - ISSN 0264-6021. - 322:3(1997), pp. 729-735. [10.1042/bj3220729]

cDNA cloning and expression of the flavoprotein D-aspartate oxidase from bovine kidney cortex

T. Simonic
Primo
;
S. Duga
Secondo
;
A. Negri;G. Tedeschi;M.L. Tenchini
Penultimo
;
S. Ronchi
Ultimo
1997

Abstract

The isolation and sequencing of the complete cDNA coding for a D-aspartate oxidase, as well as the overexpression of the recombinant active enzyme, are reported for the first time. This 2022 bp cDNA, beside the coding portion, comprises a 5' untranslated tract and the whole 3' region including the polyadenylation signal and the poly(A) tail. The encoded protein comprises 341 amino acids, with the last three residues (-Ser-Lys-Leu) representing a peroxisomal targeting signal 1 (PTS1), hitherto unknown for this protein. The overexpression of recombinant D-aspartate oxidase was achieved in a prokaryotic system, and a soluble and active enzyme was obtained which accounted for about 10% of total bacterial protein. Comparisons with the known cDNAs for mammalian D-amino acid oxidase, another peroxisomal enzyme, are also made. The close structural and functional similarities shared by these enzymes at the protein level are not reflected at the nucleic acid level.
Settore BIO/10 - Biochimica
Settore BIO/11 - Biologia Molecolare
1997
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/181329
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