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Analyzing and Building Nucleic Acid Structures with 3DNA
Published on: April 26, 2013
S1RNA结合域的溶液结构:一个古老的核酸结合的成员
M Bycroft1, T J Hubbard, M Proctor
1Department of Chemistry, University of Cambridge, United Kingdom.
Cell
|January 24, 1997
概括
对于蛋白质中的RNA结合至关重要的S1域具有β桶结构. 这一发现揭示了其古老的起源和在各种RNA相关蛋白中广泛存在.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 结构生物学 结构生物学
背景情况:
- S1 域是一个保存的结构图案,在众多RNA结合蛋白中发现.
- 它在蛋白质和核酸之间的相互作用中起着至关重要的作用.
研究的目的:
- 确定来自大肠杆菌多核酸酸酶的S1RNA结合域的三维结构.
- 为了识别参与RNA结合的保存残留物.
- 探索S1域与其他核酸结合蛋白的进化关系.
主要方法:
- 核磁共振 (NMR) 光谱法用于确定蛋白质结构.
- 进行了序列同质性搜索,以确定额外的S1域.
主要成果:
- 在S1域采用五链反平行β桶折叠.
- 贝塔桶的特定面,以及相邻的循环,构成了假定的RNA结合部位.
- 在S1域和冷冲击蛋白之间观察到结构相似性,这表明它们具有共同的进化起源.
- 在RNase E,RNase II,Nusa和EMB-5等蛋白质中发现了新的S1域.
结论:
- S1 域具有保留的β 桶结构,对于RNA 结合至关重要.
- S1域和冷冲击蛋白可能是从一个古老的核酸结合蛋白祖先进化而来的.
- 鉴定新的S1域扩大了我们对它们在各种细胞过程中的流行和功能的理解.
相关概念视频
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The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
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The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
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Different Types of RNA Have the Same Basic Structure
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