Entrapping Polymer Chain in Light Well under Good Solvent Condition
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- Ichikawa Masatoshi
- Department of Physics, Kyushu University
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- Matsuzawa Yukiko
- Department of Home Economics, Otsuma Women’s University
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- Yoshikawa Kenichi
- Department of Physics, Graduate School of Science, Kyoto University/CREST
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During the last decade, the laser trapping technique has been actively applied to elucidate the property of macromolecules such as deoxyribonucleic acid (DNA), ribonucleic acid (RNA) and cytoskeleton fibres. Due to the inherent difficulty in the direct trapping of single molecules at approximately 300 K, most of the current studies on laser trapping utilize the experimental technique to grasp microbeads that are attached to a single macromolecule, instead of using direct trapping. A few studies have demonstrated the applicability of laser trapping for highly packed compact DNA under a ‘poor’ solvent condition without any beads. In the present study, we achieve laser trapping on a single DNA molecule under a ‘good’ solvent condition without any microbeads. The time-dependent change of the conformation accompanied by ON/OFF laser irradiation was measured and analysed in terms of the entrapment and release of a coiled polymer around a micrometer-sized potential.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 74 (7), 1958-1961, 2005
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204188025856
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- NII論文ID
- 110001979650
- 130004539308
- 210000105537
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- NII書誌ID
- AA00704814
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- BIBCODE
- 2005JPSJ...74.1958I
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 7356978
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 使用不可