English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 49378/84106 (59%)
造訪人次 : 7383432      線上人數 : 53
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27710

    題名: B- to S-form transition in double-stranded DNA with basepair interactions
    作者: Lai, Pik-yin;周子聰;Zhou, Zi-cong
    貢獻者: 淡江大學物理學系
    關鍵詞: Biopolymer;DNA
    日期: 2003-04-01
    上傳時間: 2009-12-31 10:39:13 (UTC+8)
    出版者: Elsevier
    摘要: When a DNA in its nature double-helical state is stretched by an external force, its length undergoes a sharp extension from the B-form to the 1.7 times elongated S-form. This phenomenon is investigated in the framework of a model of a double-stranded with basepair interactions and bending. Shape equations governing the structure of the DNA under external forces and torques are derived using a classical mechanical approach. The first-order nature of the B- to S-form transition is revealed clearly in terms of an effective potential with a barrier separating these two states. All the structural properties of the DNA in both forms can be calculated in detail. The configurations of the double strands, relative extension, amount of self-untwisting and the threshold stretching force of the DNA under stretched are obtained and compare well with experimental observations.
    關聯: Physica A: Statistical Mechanics and its Applications 321(1-2), pp.170-180
    DOI: 10.1016/S0378-4371(02)01776-4
    顯示於類別:[物理學系暨研究所] 期刊論文


    檔案 描述 大小格式瀏覽次數



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋