Exonize:一种用于在注释基因组中找到和分类外重复的工具
Marina Herrera Sarrias1,2, Christopher W Wheat3, Liam M Longo4,5
1Department of Mathematics, Stockholm University, Stockholm, SE-106 91, Sweden.
Bioinformatics advances
|August 13, 2025
概括
Exonize是一个新的计算工具,可以识别和分类真核生物基因组内的外重复. 这种工具有助于研究外因子进化,并在900多个人类基因中确定了全外因子重复.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 生物信息学是一种生物信息学.
背景情况:
- 细胞基因含有称为外子的蛋白质编码区域,这些区域可以进行重复,删除或重新排列.
- 对外体进化的系统研究需要对基因内外体相似性的目录和组织.
- 了解子重复事件对于理解基因进化和功能至关重要.
研究的目的:
- 开发一种计算工具Exonize,用于识别和分类注释基因组中的编码外重复.
- 促进对外子进化及其后果的系统研究.
- 通过识别异构和内构区域之间的重复事件来检测未注释或退化异构.
主要方法:
- Exonize使用基于图形的框架来管理由重复重复事件产生的相关外型子集群.
- 该工具对不同转录中重复的外子或外子组之间的相互依赖进行分类.
- 它识别出外基和内基区域之间的重复事件,以检测新的或退化的外基.
主要成果:
- 在20个真核生物基因组中应用了Exonize,在至少4%的脊椎动物基因中发现了全外重复.
- 研究人员发现,超过900个人类基因经历了全系子重复事件.
- 该工具成功地识别和分类了各种外重复场景.
结论:
- Exonize提供了一个强大的计算框架,用于研究外重复及其进化影响.
- 该工具有助于发现未注释的外因子和理解基因组织.
- 研究结果表明,表细胞重复是真核生物,特别是脊椎动物的一个重要的进化机制.
更多相关视频
09:58Using RNA-sequencing to Detect Novel Splice Variants Related to Drug Resistance in In Vitro Cancer Models
Published on: December 9, 2016
13.9K
10:40Comprehensive Workflow for the Genome-wide Identification and Expression Meta-analysis of the ATL E3 Ubiquitin Ligase Gene Family in Grapevine
Published on: December 22, 2017
10.6K
相关概念视频
Exon Recombination
3.7K
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon...
Exon shuffling follows “splice frame rules.” Each exon...
3.7K
Gene Duplication and Divergence
6.3K
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
6.3K
Genome Annotation and Assembly
19.3K
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
19.3K
Comparing Copy Number Variations and SNPs
17.9K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.9K
RNA Splicing
57.0K
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
57.0K
Genomic DNA in Eukaryotes
47.7K
Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
47.7K
