Date of Award
1-1-2019
Language
English
Document Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
College/School/Department
Department of Chemistry
Content Description
1 online resource (xi, 92 pages) : color illustrations.
Dissertation/Thesis Chair
Jia Sheng
Committee Members
Jia Sheng, Alexander Shekhtman, Mehmet Yigit, Zhang Wang, Ken Halvorsen
Keywords
fluorescence, nucleic acids, structural study, RNA, Metal ions
Subject Categories
Biochemistry | Biophysics
Abstract
It has been known that the template-directed RNA chemical replication reaction produces mixture of backbones containing both 3’-5’ and 2’-5’ linkages. This backbone heterogeneity has been a significant problem in studying the emergence of RNA World from the prebiotic chemistry. However, very recently, it is reported that FMN binding aptamer and a hammerhead ribozyme are still able to retain considerable functions in the presence of certain 2’-5’ linkages, indicating that RNA backbones may be quite flexible and this backbone heterogeneity problem may not be as severe as originally thought. This finding also brings two related important questions: First, how does RNA adjust the structures to accommodate these 2’-5’ linkages? Second, what might have been the molecular consequence and the potential evolutionary functions of these 2’-5’ linkages in the original stage of life? These two questions were discussed by systematically studying the structural and functional effects of 2’-5’ linkages in three different RNA systems including duplex, aptamer and ribozyme.
Recommended Citation
Shen, Fusheng, "Significance of RNA 2'-5' linkage and metal-ion mediated base pairs" (2019). Legacy Theses & Dissertations (2009 - 2024). 2382.
https://scholarsarchive.library.albany.edu/legacy-etd/2382