کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10233236 | 42737 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enzymatic production of d-p-hydroxyphenylglycine from dl-5-p-hydroxyphenylhydantoin by Sinorhizobium morelens S-5
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enzymatic production of d-p-hydroxyphenylglycine from dl-5-p-hydroxyphenylhydantoin by Sinorhizobium morelens S-5 Enzymatic production of d-p-hydroxyphenylglycine from dl-5-p-hydroxyphenylhydantoin by Sinorhizobium morelens S-5](/preview/png/10233236.png)
چکیده انگلیسی
A microorganism with the ability to form d-p-hydroxyphenylglycine (d-pHPG) from dl-5-p-hydroxyphenylhydantoin (dl-5-pHPH) was isolated and identified as Sinorhizobium morelens S-5. Hydantoinase and carbamoylase involved in this bioconversion process were both strictly d-stereospecific. Addition of dl-5-(2-indolymethyl)hydantoin in the medium could enhance the biotransfromation ability of the cells of S. morelens S-5. The optimum temperature and pH for d-pHPG production, respectively, were 45 °C and 8.2 when resting cells were used during the biotransformation process. Partially purified d-carbamoylase exhibited a temperature optimum at 60 °C and pH optimum at 7.0 in 0.1 M phosphate buffer. The thermostablility of the enzyme was remarkable, with no loss of activity detected after 40 min at 50 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Enzyme and Microbial Technology - Volume 36, Issue 4, 2 March 2005, Pages 520-526
Journal: Enzyme and Microbial Technology - Volume 36, Issue 4, 2 March 2005, Pages 520-526
نویسندگان
Sheng Wu, Liu Yang, Yanbin Liu, Guogang Zhao, Jianjun Wang, Wanru Sun,