期刊
BIOPHYSICAL JOURNAL
卷 100, 期 2, 页码 517-523出版社
CELL PRESS
DOI: 10.1016/j.bpj.2010.12.3700
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资金
- Ministry of Education of Singapore [R144000251112]
- Mechanobiology Institute, Singapore [R714001003271]
- Harvard University Science and Engineering Committee Seed Fund for Interdisciplinary Science
Although magnetic tweezers have many unique advantages in terms of specificity, throughput, and force stability, this tool has had limited application on short tethers because accurate measurement of force has been difficult for short tethers under large tension. Here, we report a method that allows us to apply magnetic tweezers to stretch short biomolecules with accurate force calibration over a wide range of up to 100 pN. We demonstrate the use of the method by overstretching of a short DNA and unfolding/refolding a protein of filamin A immunoglobulin domains 1-8. Other potential applications of this method are also discussed.
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