相关实验视频
Updated: May 15, 2025

13:42
RNA Secondary Structure Prediction Using High-throughput SHAPE
Published on: May 31, 2013
31.3K
针对RNA二次结构预测的大型语言模型的全面基准测试
Luciano I Zablocki1, Leandro A Bugnon1, Matias Gerard1
1Research Institute for Signals, Systems and Computational Intelligence, sinc (i), FICH-UNL/CONICET, Ruta Nacional Nº 168, km 472.4, Santa Fe (3000), Argentina.
Briefings in bioinformatics
|April 10, 2025
概括
对于RNA的大型语言模型 (LLM) 显示了预测RNA二级结构的前景. 然而,它们的概括能力有所不同,其中两个模型表现优于其他模型,特别是在低同质性场景中.
科学领域:
- 计算生物学 计算生物学
- 生物信息学是一种生物信息学.
- 机器学习 机器学习
背景情况:
- 大型语言模型 (LLM) 在建模DNA和蛋白质序列方面取得了成功.
- 对于RNA的LLM正在出现,从庞大的数据集中学习RNA基的丰富数值表示.
- 假设高质量的RNA表示可以提高数据密集型任务的性能,例如RNA二次结构预测.
研究的目的:
- 为了全面分析和比较预训练的RNALLMs用于RNA二次结构预测.
- 评估RNALLM在新的和多样化的RNA结构上的概括能力.
- 为RNA LLM评估建立统一的实验设置和策划的基准数据集.
主要方法:
- 利用常见的深度学习架构来评估RNA LLM表示用于二级结构预测.
- 在基准数据集上评估多个预训练的RNALLM,概括难度越来越高.
- 进行了RNA LLM性能在不同同类水平的比较分析.
主要成果:
- 与其他模型相比,两个特定的RNALLM表现出优异的性能.
- 在RNALLM的概括能力方面发现了重大挑战,特别是在低同质性场景中.
- 该研究提供了精心策划的基准数据集和统一的实验框架.
结论:
- 预训练的RNA LLM可以增强RNA二次结构预测,但它们的概括能力需要进一步调查.
- 模型选择至关重要,因为不同RNALLM的性能在不同RNALLM之间存在显著差异.
- 未来的研究应该专注于改进RNA LLM的泛化,特别是对于对训练数据具有低同质性的序列.
相关概念视频
RNA-seq
9.7K
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
9.7K
Ribosome Profiling
3.4K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.4K
Leaky Scanning
5.0K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.0K
Improving Translational Accuracy
8.5K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
8.5K
RNA Structure
4.5K
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...
4.5K
RNA Stability
33.1K
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...
33.1K

