The effect of force on thermodynamics and kinetics: unfolding single RNA molecules.
نویسندگان
چکیده
We have used laser tweezers to unfold single RNA molecules at room temperature and in physiological-type solvents. The forces necessary to unfold the RNAs are over the range 10-20 pN, forces that can be generated by cellular enzymes. The Gibbs free energy for the unfolding of TAR (transactivation-responsive) RNA from HIV was found to be increased after the addition of argininamide; the TAR hairpin was stabilized. The rate of unfolding was decreased and the rate of folding was increased by argininamide.
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ورودعنوان ژورنال:
- Biochemical Society transactions
دوره 32 Pt 5 شماره
صفحات -
تاریخ انتشار 2004