2002年8月
Mispaired P3 region in the hierarchical folding pathway of the Tetrahymena ribozyme
Genes to Cells
- ,
- ,
- ,
- 巻
- 7
- 号
- 8
- 開始ページ
- 851
- 終了ページ
- 860
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1046/j.1365-2443.2002.00567.x
- 出版者・発行元
- BLACKWELL PUBLISHING LTD
Background: The Tetrahymena group I ribozyme folds into a complex three-dimensional structure for performing catalytic reactions. The catalysis depends on its catalytic core consisting of two helical domains, P4-P6 and P3-P7, connected by single stranded regions. In the folding process, most of this ribozyme folds in a hierarchical manner in which a kinetically stable intermediate determines the overall folding rate.
Results: Although the nature of this intermediate has not yet been elucidated, a mispaired P3 stem (alt-P3) appears a likely candidate. To examine the effects of the alt-P3 structure on the kinetic and thermodynamic properties of the active structure of the ribozyme or its P3-P7 domain formation, we prepared and analysed variant ribozymes in which relative stabilities of the original P3 and alt-P3 structure were altered systematically.
Conclusion: The results indicate that the alt-P3 structure is not the major rate-limiting factor in the folding process.
Results: Although the nature of this intermediate has not yet been elucidated, a mispaired P3 stem (alt-P3) appears a likely candidate. To examine the effects of the alt-P3 structure on the kinetic and thermodynamic properties of the active structure of the ribozyme or its P3-P7 domain formation, we prepared and analysed variant ribozymes in which relative stabilities of the original P3 and alt-P3 structure were altered systematically.
Conclusion: The results indicate that the alt-P3 structure is not the major rate-limiting factor in the folding process.
- リンク情報
- ID情報
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- DOI : 10.1046/j.1365-2443.2002.00567.x
- ISSN : 1356-9597
- PubMed ID : 12167162
- Web of Science ID : WOS:000177365700008