XGBoost框架具有特征选择,用于预测RNA N5-甲基细胞因位点
Zeeshan Abbas1, Mobeen Ur Rehman1, Hilal Tayara2
1Department of Electronics and Information Engineering, Jeonbuk National University, Jeonju 54896, South Korea.
概括
本研究介绍了m5C-pred,这是一个计算模型,用于准确识别五种物种中的5 - 甲基氨酸 (m5C) 甲基化位点. 该模型增强了对RNA修饰及其生物作用的理解.
科学领域:
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
- 基因组学就是基因组学.
背景情况:
- 5甲基氨酸 (m5C) 是一种关键的RNA转录后修饰,涉及到基本的生物过程.
- 准确识别m5C遗址对于理解它们在各种生物环境中的功能作用至关重要.
- 计算方法提供了一种有效和负担得起的方法来识别RNA甲基化位点.
研究的目的:
- 开发一种精确有效的计算模型,m5C-pred,用于识别RNA m5C甲基化位点.
- 为了在五种不同的物种中识别m5C位点:智人,阿拉比多普西斯塔利亚纳,肌肉肌,Drosophila melanogaster和Danio rerio.
- 改进现有的最先进的RNA m5C位点预测方法.
主要方法:
- 结合了五种不同的特征编码技术,用于RNA序列特征提取.
- 利用夏普利添加式扩展 (SHAP) 进行最佳特征选择.
- 采用XGBoost作为分类算法和Optuna进行超参数优化.
- 使用独立测试数据集评估模型性能,并与以前的方法进行比较.
主要成果:
- 该m5C-pred模型在识别RNAm5C位点方面表现出高准确度.
- 该模型在预测m5C位置方面超过了现有的最先进的技术.
- 使用SHAP的特征选择和使用Optuna的超参数调整有助于模型有效性.
结论:
- m5C-pred提供了一种强大而准确的计算工具,用于识别RNA m5C位点.
- 开发的模型有望帮助研究人员理解m5C修改的功能意义.
- 这种方法在RNA表观遗传学和生物信息学领域提供了宝贵的进步.
相关概念视频
03:21RNA-seq
10.1K
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...
10.1K
02:23RNA Editing
9.1K
RNA editing is a post-transcriptional modification where a precursor mRNA (pre-mRNA) nucleotide sequence is changed by base insertion, deletion, or modification. The extent of RNA editing varies from a few hundred bases, in mitochondrial DNA of trypanosomes, to a just single base, in nuclear genes of mammals. Even a single base change in the pre-mRNA can convert a codon for one amino acid into the codon for another amino acid or a stop codon. This type of re-coding can significantly affect the...
9.1K
02:35RACE - Rapid Amplification of cDNA Ends
6.4K
Rapid Amplification of cDNA Ends, or RACE, is one of the most effective methods to obtain a full-length cDNA from an mRNA sequence between a known internal region to the unknown sequence at the 5’ or 3’ end. The unknown region is cloned in the cDNA by a gene-specific primer that binds the known end, and a hybrid primer that attaches a predefined anchor sequence to the unknown end of the cDNA. The sequence in between is amplified by PCR with an anchor primer and a gene-specific...
6.4K
02:15Experimental RNAi
6.2K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.2K
02:07Improving Translational Accuracy
11.7K
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...
11.7K
02:02Genomics
36.5K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
36.5K