Hall Kathleen B
Department of Biochemistry and Molecular Biophysics, Washington University School of Medicine, St Louis, MO 63110, USA.
Curr Opin Chem Biol. 2008 Dec;12(6):612-8. doi: 10.1016/j.cbpa.2008.09.033. Epub 2008 Oct 26.
Although RNA duplex regions are highly structured and inflexible, other elements of an RNA molecule are capable of dynamic motions. These flexible regions are the sites of interactions with small molecules, proteins, and other RNAs, yet there are few descriptions of these regions that include the timescale and amplitude of their motions. No one technique is sufficient to accurately describe these motions, but the combination of in vitro methods, particularly NMR relaxation methods, and more robust in silico methods, is beginning to yield the type of data that can be used to understand RNA function. Very few RNAs have been described by both techniques, and here one such RNA and one RNA:protein complex are reviewed.
尽管RNA双链区域结构高度规整且缺乏灵活性,但RNA分子的其他元件能够进行动态运动。这些灵活区域是与小分子、蛋白质及其他RNA相互作用的位点,然而关于这些区域运动的时间尺度和幅度的描述却很少。没有一种技术足以准确描述这些运动,但体外方法,特别是核磁共振弛豫方法与更强大的计算机模拟方法相结合,正开始产生可用于理解RNA功能的数据类型。很少有RNA同时通过这两种技术进行描述,本文将对这样一种RNA和一种RNA-蛋白质复合物进行综述。