کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10771193 | 1050839 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification of the RNA chaperone activity of recombinant human tumor necrosis factor alpha in vitro
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موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
RNA chaperones are defined as proteins that aid in the process of RNA folding by processing misfolding or by resolving misfolded structures. Although RNA chaperones are ubiquitous and abundant in all living organisms and viruses, there are no any reports that a cytokine has such RNA chaperone activity. Here, we demonstrate for the first time that recombinant human tumor necrosis factor alpha (rhTNF-α), a well-known cytokine, has RNA chaperone activity in vitro. rhTNF-α binds random 68 nt RNAs strongly at the minimal concentration of 10 μM with a broad sequence specificity. Our results also show that rhTNF-α facilitates annealing and strand exchange, and promotes the cleavage of a 17-nucleotide substrate S by hammerhead ribozyme HH16. The role of TNF-α as an RNA chaperone in vivo is not clear, but we propose that TNF-α may play an important role as an RNA chaperone during the process of some infectious and inflammatory diseases.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 328, Issue 2, 11 March 2005, Pages 573-579
Journal: Biochemical and Biophysical Research Communications - Volume 328, Issue 2, 11 March 2005, Pages 573-579
نویسندگان
Guojun Cao, Guang Yang, Zhaohui Liu, Xuemei Liu, Jie Zhang, Dajin Zhang, Nongle Liu, Hongmei Ding, Ming Fan, Beifen Shen, Ningsheng Shao,