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相关概念视频

Next-generation Sequencing03:00

Next-generation Sequencing

88.9K
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
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Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
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Sanger Sequencing01:57

Sanger Sequencing

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DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
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Multi-species Conserved Sequences02:51

Multi-species Conserved Sequences

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Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
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RNA-seq03:21

RNA-seq

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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...
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相关实验视频

Updated: Jul 6, 2025

Ultra-long Read Sequencing for Whole Genomic DNA Analysis
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Ultra-long Read Sequencing for Whole Genomic DNA Analysis

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FMAlign2:一种用于超长数据集的新型快速多重核酸序列对齐方法.

Pinglu Zhang1,2, Huan Liu3, Yanming Wei4

  • 1Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, Sichuan, China.

Bioinformatics (Oxford, England)
|January 10, 2024
PubMed
概括

FMAlign2改善了超长DNA序列的多重序列对齐 (MSA). 这个生物信息学工具使用垂直划分策略和后数组来更快,更准确地对齐大规模数据集.

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相关实验视频

Last Updated: Jul 6, 2025

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科学领域:

  • 生物信息学是一种生物信息学.
  • 计算生物学 计算生物学
  • 基因组学就是基因组学.

背景情况:

  • 多重序列对齐 (MSA) 是生物信息学的基础.
  • 传统的MSA方法在超长序列方面面临着挑战.
  • 现有的方法难以扩展数组,长度为数十亿个字符.

研究的目的:

  • 为超长序列开发一种高效准确的MSA方法.
  • 增强现有的MSA工具来处理大规模的基因组数据集.
  • 提高生物信息学序列对齐的可扩展性和速度.

主要方法:

  • 对于并行处理,FMAlign2采用了垂直分割策略.
  • 它使用后数组来识别最大的精确匹配.
  • 序列形状对齐和精细化用于子集连接.

主要成果:

  • 与FMAlign相比,FMAlign2显著减少了与FMAlign相比的超长序列的对齐时间.
  • 该方法在庞大的数据集上保持高准确度.
  • 它可以在可接受的时间框架内对准长度达到数十亿的序列.

结论:

  • FMAlign2为超长序列的多个序列对齐提供了一个可扩展的解决方案.
  • 该工具增强了现有的生物信息学方法的能力.
  • 它为分析大规模基因组数据提供了一种高效的方法.