Visualization of conformational variability in the domains of long single-stranded RNA molecules.
Visualization of conformational variability in the domains of long single-stranded RNA molecules.
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DOI:
10.1093/nar/gkx502
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发表时间:
2017-08-21
影响因子:
14.9
通讯作者:
Takeyasu K
中科院分区:
文献类型:
--
作者:
Gilmore JL;Yoshida A;Hejna JA;Takeyasu K
We demonstrate an application of atomic force microscopy (AFM) for the structural analysis of long single-stranded RNA (>1 kb), focusing on 28S ribosomal RNA (rRNA). Generally, optimization of the conditions required to obtain three-dimensional (3D) structures of long RNA molecules is a challenging or nearly impossible process. In this study, we overcome these limitations by developing a method using AFM imaging combined with automated, MATLAB-based image analysis algorithms for extracting information about the domain organization of single RNA molecules. We examined the 5 kb human 28S rRNA since it is the largest RNA molecule for which a 3D structure is available. As a proof of concept, we determined a domain structure that is in accordance with previously described secondary structural models. Importantly, we identified four additional small (200–300 nt), previously unreported domains present in these molecules. Moreover, the single-molecule nature of our method enabled us to report on the relative conformational variability of each domain structure identified, and inter-domain associations within subsets of molecules leading to molecular compaction, which may shed light on the process of how these molecules fold into the final tertiary structure.
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影响因子:
14.9
作者:
Hsiao C;Williams LD
通讯作者:
Williams LD
影响因子:
7.3
作者:
Henras, Anthony K.;Plisson-Chastang, Celia;O'Donohue, Marie-Francoise;Chakraborty, Anirban;Gleizes, Pierre-Emmanuel
通讯作者:
Gleizes, Pierre-Emmanuel
DOI:
10.1073/pnas.82.17.5598
发表时间:
1985-01-01
影响因子:
11.1
作者:
OOSTERGETEL, GT;WALL, JS;BOUBLIK, M
通讯作者:
BOUBLIK, M
影响因子:
4.5
作者:
Athavale, Shreyas S.;Gossett, J. Jared;Williams, Loren Dean
通讯作者:
Williams, Loren Dean
影响因子:
64.8
作者:
Anger, Andreas M.;Armache, Jean-Paul;Beckmann, Roland
通讯作者:
Beckmann, Roland