Spontaneous sharp bending of DNA: role of melting bubbles
Spontaneous sharp bending of DNA: role of melting bubbles
复制标题
DNA 自发急剧弯曲:融化气泡的作用
作者:
Chongli Yuan;E. Rhoades;X. Lou;L. Archer
The role of centrally located and distributed base pair mismatches (‘melting bubbles’) on localized bending and stiffness of short dsDNA fragments is evaluated using time-dependent fluorescence lifetime measurements. Distributed melting bubbles are found to induce larger bending angles and decreased levels of stiffness in DNA than centrally located ones of comparable overall size. Our results indicate that spontaneous local opening-up of the DNA duplex could facilitate sharp bending of short DNA strands even in the absence of DNA binding proteins. We also find that the occurrence of two closely spaced melting bubbles will generally be favored when a large energetic barrier must be overcome in forming the desired bent DNA structure.
登录
查看更多内容
影响因子:
2.4
作者:
Wiggins, PA;Phillips, R;Nelson, PC
通讯作者:
Nelson, PC
影响因子:
3.4
作者:
Murphy, MC;Rasnik, I;Ha, TJ
通讯作者:
Ha, TJ
DOI:
10.1073/pnas.0500983102
发表时间:
2005-04-12
影响因子:
11.1
作者:
Du, Q;Smith, C;Vologodskii, A
通讯作者:
Vologodskii, A
影响因子:
3.4
作者:
Zhang, YL;Crothers, DM
通讯作者:
Crothers, DM
影响因子:
16
作者:
Cloutier, TE;Widom, J
通讯作者:
Widom, J