کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10870851 | 1074023 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of Azotobacter vinelandii FdxN in FeMo-co biosynthesis
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Biosynthesis of metal clusters for the nitrogenase component proteins NifH and NifDK involves electron donation events. Yet, electron donors specific to the biosynthetic pathways of the [4Fe-4S] cluster of NifH, or the P-cluster and the FeMo-co of NifDK, have not been identified. Here we show that an Azotobacter vinelandii mutant lacking fdxN was specifically impaired in FeMo-co biosynthesis. The ÎfdxN mutant produced 5-fold less NifB-co, an early FeMo-co biosynthetic intermediate, than wild type. As a consequence, it accumulated FeMo-co-deficient apo-NifDK and was impaired in NifDK activity. We conclude that FdxN plays a role in FeMo-co biosynthesis, presumably by donating electrons to support NifB-co synthesis by NifB. This is the first role in nitrogenase biosynthesis unequivocally assigned to any A. vinelandii ferredoxin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 588, Issue 3, 31 January 2014, Pages 512-516
Journal: FEBS Letters - Volume 588, Issue 3, 31 January 2014, Pages 512-516
نویسندگان
Emilio Jiménez-Vicente, Mónica Navarro-RodrÃguez, César Poza-Carrión, Luis M. Rubio,