Subunit fusion of two yeast D-amino acid oxidases enhances their thermostability and resistance to H2O2

التفاصيل البيبلوغرافية
العنوان: Subunit fusion of two yeast D-amino acid oxidases enhances their thermostability and resistance to H2O2
المؤلفون: Wang, Shih-juei, Yu, Chi-yang, Lee, Cheng-kang, Chern, Ming-kai, Kuan, I-ching
المساهمون: 淡江大學生命科學研究所
بيانات النشر: Springer Netherlands
سنة النشر: 2008
المجموعة: Tamkang University Institutional Repository (TKUIR) / 淡江大學機構典藏
مصطلحات موضوعية: D-Amino acid oxidase, Gene fusion, Rhodosporidium toruloides, Stability, Trigonopsis variabilis
الوصف: D-Amino acid oxidases from Rhodosporidium toruloides and Trigonopsis variabilis (RtDAO and TvDAO) are both yeast homodimeric flavoenzymes. Two of their cDNA genes were connected by a hexanucleotide linker and heterologously expressed in E. coli to produce the corresponding double DAOs (dRtDAO and dTvDAO) with two subunits fused into a single polypeptide. The specific activities of double DAOs remained similar to those of native dimeric DAOs, although the catalytic efficiencies (kcat/KM) were decreased due to higher KM values. The Tm value for dRtDAO was shifted 5°C higher while that for dTvDAO was increased only by 2°C, in comparison with the corresponding native counterparts. In the presence of 10 mM H2O2, dRtDAO and dTvDAO exhibited half-lives of about 60 and 40 min, respectively, which were 2- and 1.5-fold, respectively, longer than their native DAOs. These yeast DAOs can therefore be thermally and oxidatively stabilized by linking their subunits together. ; 國外 ; SCI ; 紙本 ; 電子版 ; NLD
نوع الوثيقة: other/unknown material
اللغة: English
العلاقة: Biotechnology Letters 30(8), pp.1415-1422; 0141-5492; 1573-6776; http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/61895Test; http://tkuir.lib.tku.edu.tw:8080/dspace/bitstream/987654321/61895/1/index.htmlTest
الإتاحة: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/61895Test
http://tkuir.lib.tku.edu.tw:8080/dspace/bitstream/987654321/61895/1/index.htmlTest
رقم الانضمام: edsbas.672D2A25
قاعدة البيانات: BASE