相关实验视频
Updated: Jan 12, 2026

11:32
Mapping RNA-RNA Interactions Globally Using Biotinylated Psoralen
Published on: May 24, 2017
12.6K
在CASP16中对围绕RNA的复杂水和离子合体的盲目预测
Rachael C Kretsch1, Elisa Posani2, Eugene F Baulin3,4
1Biophysics Program, Stanford University School of Medicine, Stanford, California, USA.
Proteins
|November 8, 2025
概括
这项研究将水和离子结构的盲目预测与Tetrahymena ribozyme的冷EM数据进行了比较. 集合模型比静态模型更好地捕获动态溶剂相互作用,突出了改善生物分子模拟的潜力.
科学领域:
- 结构生物学 结构生物学
- 计算生物学 计算生物学
- 生物物理学的生物物理.
背景情况:
- 生物分子折叠取决于水和离子,但它们的动态相互作用很难在实验中观察.
- 当前的方法往往将生物分子模型为静态结构,缺少短暂的溶剂效应.
研究的目的:
- 为了评估水和离子组合的盲目预测与高分辨率冷电子显微镜 (cryo-EM) 数据.
- 与传统模型相比,评估集合表示能够捕捉动态溶剂结构的能力.
主要方法:
- 盲目的预测挑战比较了26个组的水和离子结构组合,用于Tetrahymena ribozyme.
- 预测的原子组合转换为密度,与冷EM密度进行比较.
- 使用皮尔森相关性,斯皮尔曼相关性,相互信息和精度回忆曲线进行定量评估.
主要成果:
- 集体表示显示了相对于静态模型来说,捕获暂时和动态水/离子信息的能力有所提高.
- 预测和实验不确定性之间的准确性差距仍然很大.
- 分子动力学 (MD) 模拟,特别是特定的盲目预测,显示出与冷EM密度的最佳相关性.
结论:
- 水和离子的模拟可以使用冷电磁图进行定量验证.
- 全社区的盲目挑战对于推进水,离子和其他隐藏的生物分子组件的建模具有价值.
- 需要进一步开发集合建模方法,以弥合与实验数据的准确性差距.
相关概念视频
RNA Stability
35.6K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
35.6K
RNA Structure
78.7K
Overview
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...
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...
78.7K
RNA Structure
7.0K
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. 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) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
7.0K
Conserved Binding Sites
5.0K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
5.0K

