Mechanical behavior of double-stranded DNA at atomistic scale
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 422
فایل این مقاله در 6 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ISME27_665
تاریخ نمایه سازی: 8 مرداد 1398
چکیده مقاله:
Besides its key role in many of the major processes of cell biology, including DNA replication, DNA repair, DNA recombination, etc., DNA molecule can serve as a promising material in nanostructures. enhance the understanding of different overstretched DNA structures.In silico tensile tests were performed using all atom molecular dynamics method to study nanomechanical behavior of DNA duplex. The DNA molecule is immersed in the Monte Carlo equilibrated periodic TIP3P water bath and is elongated with va rious pullingspeeds. The double-stranded DNA is stretched from opposite end of each strand under shear mode. Forceextension curves were obtained and atomistic structures of DNA dodecamer were investigated. The results of this study show that the rupture force of short DNA duplex is a nonlinear function of the pulling velocity. At larger extensions correspond to the first structural transitionphenomenon, the average number of H-bonds is observed to be almost constant. Presented results provide a fundamental molecular understanding of the DNA stretching mechanism
کلیدواژه ها:
نویسندگان
A.M Naserian-Nik
Department of Mechanical Engineering, Faculty of Engineering, Quchan University of Technology, Quchan, Iran
M Tahani
Department of Mechanical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran