کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1953423 1057272 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transcription elongation through a chromatin template
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Transcription elongation through a chromatin template
چکیده انگلیسی

DNA transaction events occurring during cell life (replication, transcription, recombination, repair, cell division) are always linked to severe changes in the topological state of the double helix. However, since naked DNA almost does not exist in eukaryote nucleus but rather interacts with various proteins, including ubiquitous histones, these topological changes happen in a chromatin context. This review focuses on the role of chromatin fiber structure and dynamics in the regulation of transcription, with an almost exclusive emphasis on the elongation step. Beside a brief overview of our knowledge about transcribed chromatin, we will see how recent mechanistic and biochemical studies give us new insights into the way cell could modulate DNA supercoiling and chromatin conformational dynamics. The participation of topoisomerases in this complex ballet is discussed, since recent data suggest that their role could be closely related to the precise chromatin structure. Lastly, some future prospects to carry on are proposed, hoping this review will help in stimulating discussions and further investigations in the field.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimie - Volume 89, Issue 4, April 2007, Pages 516–527
نویسندگان
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