Isothermal titration calorimetry of RNA.

Isothermal titration calorimetry of RNA.
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RNA的等温滴定量热法。

DOI:
10.1016/j.ymeth.2008.09.003
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发表时间:
2009-03
期刊:
影响因子:
4.8
通讯作者:
Feig, Andrew L.
Feig, Andrew L.
中科院分区:
生物学3区
文献类型:
--
作者:
Salim, Nilshad N.;Feig, Andrew L.

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等温滴定量热法(ITC)是一种快速、可靠的研究分子相互作用物理基础的方法。一个精心设计的实验可以提供结合反应的完整热力学表征,包括Ka,ΔG,ΔH,ΔS和反应化学计量(n)。在不同温度下重复实验可以确定相互作用的热容变化(ΔCP)。现代量热计的灵敏度足以探测甚至微弱的生物相互作用,使ITC成为生物化学家中非常流行的方法。虽然ITC已经应用于蛋白质研究多年,但它也正在广泛应用于RNA生物化学,特别是涉及RNA折叠和RNA与小分子,蛋白质和其他RNA相互作用的研究。这篇评论的重点是规划,设计和执行有效的ITC实验时,一个或多个反应物是RNA的最佳实践。
Isothermal titration calorimetry (ITC) is a fast and robust method to study the physical basis of molecular interactions. A single well-designed experiment can provide complete thermodynamic characterization of a binding reaction, including Ka, ΔG, ΔH, ΔS and reaction stoichiometry (n). Repeating the experiment at different temperatures allows determination of the heat capacity change (ΔCP) of the interaction. Modern calorimeters are sensitive enough to probe even weak biological interactions making ITC a very popular method among biochemists. Although ITC has been applied to protein studies for many years, it is becoming widely applicable in RNA biochemistry as well, especially in studies which involve RNA folding and RNA-interactions with small molecules, proteins and with other RNAs. This review focuses on best practices for planning, designing, and executing effective ITC experiments when one or more of the reactants is an RNA.
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