Thermodynamics and kinetics of RNA tertiary structure formation in the junctionless hairpin ribozyme.
Thermodynamics and kinetics of RNA tertiary structure formation in the junctionless hairpin ribozyme.
复制标题
无连接发夹核酶中RNA三级结构形成的热力学和动力学。
DOI:
10.1016/j.bpc.2017.07.001
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发表时间:
2017-09
影响因子:
3.8
通讯作者:
Hoogstraten CG
中科院分区:
文献类型:
--
作者:
White NA;Hoogstraten CG
The hairpin ribozyme consists of two RNA internal loops that interact to form the catalytically active structure. This docking transition is a rare example of intermolecular formation of RNA tertiary structure without coupling to helix annealing. We have used temperature-dependent surface plasmon resonance (SPR) to characterize the thermodynamics and kinetics of RNA tertiary structure formation for the junctionless form of the ribozyme, in which loops A and B reside on separate molecules. We find docking to be strongly enthalpy-driven and to be accompanied by substantial activation barriers for association and dissociation, consistent with the structural reorganization of both internal loops upon complex formation. Comparisons with the parallel analysis of a ribozyme variant carrying a 2′-O-methyl modification at the self-cleavage site and with published data in other systems reveal a surprising diversity of thermodynamic signatures, emphasizing the delicate balance of contributions to the free energy of formation of RNA tertiary structure.
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影响因子:
2.9
作者:
Doherty, EA;Herschlag, D;Doudna, JA
通讯作者:
Doudna, JA
DOI:
10.1107/s0907444902019066
发表时间:
2003-01-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Grum-Tokars, V;Milovanovic, M;Wedekind, JE
通讯作者:
Wedekind, JE
DOI:
10.1038/nsb0797-553
发表时间:
1997-07-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Cate, JH;Hanna, RL;Doudna, JA
通讯作者:
Doudna, JA
影响因子:
4.5
作者:
Ditzler, Mark A.;Sponer, Jiri;Walter, Nils G.
通讯作者:
Walter, Nils G.
影响因子:
18.3
作者:
Ditzler, Mark A.;Otyepka, Michal;Sponer, Jiri;Walter, Nils G.
通讯作者:
Walter, Nils G.