کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10871182 | 1074041 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structure-function relationship in the CYP74 family: Conversion of divinyl ether synthases into allene oxide synthases by site-directed mutagenesis
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Non-classical P450s of CYP74 family control several enzymatic conversions of fatty acid hydroperoxides to bioactive oxylipins in plants, some invertebrates and bacteria. The family includes two dehydrases, namely allene oxide synthase (AOS) and divinyl ether synthase (DES), and two isomerases, hydroperoxide lyase (HPL) and epoxyalcohol synthase. To study the interconversion of different CYP74 enzymes, we prepared the mutant forms V379F and E292G of tobacco (CYP74D3) and flax (CYP74B16) divinyl ether synthases (DESs), respectively. In contrast to the wild type (WT) enzymes, both mutant forms lacked DES activity. Instead, they produced the typical AOS products, α-ketols and (in the case of the flax DES mutant) 12-oxo-10,15-phytodienoic acid. This is the first demonstration of DES into AOS conversions caused by single point mutations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 587, Issue 16, 19 August 2013, Pages 2552-2558
Journal: FEBS Letters - Volume 587, Issue 16, 19 August 2013, Pages 2552-2558
نویسندگان
Yana Y. Toporkova, Valeria S. Ermilova, Svetlana S. Gorina, Lucia S. Mukhtarova, Elena V. Osipova, Yuri V. Gogolev, Alexander N. Grechkin,