相关实验视频

Updated: Jun 7, 2025

Rescue of Recombinant Zika Virus from a Bacterial Artificial Chromosome cDNA Clone
08:10

Rescue of Recombinant Zika Virus from a Bacterial Artificial Chromosome cDNA Clone

Published on: June 24, 2019

26.7K

遥远的冠状病毒物种和属之间的重组是一种罕见的事件,具有独特的基因组特征

Juan Patiño-Galindo1, Adolfo García-Sastre1,2,3,4,5,6, Jens H Kuhn7

  • 1Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.

Journal of virology
|November 19, 2024
PubMed
概括

严重急性呼吸道综合征冠状病毒2 (SARS-CoV-2) 可能通过同一种物种内与密切相关的病毒重组获得了独特的特征. 这一发现对于理解病毒的出现和预防未来的流行病至关重要.

关键词:
这就是SARS-CoV-2病毒.进化 演化 演化 演化 演化 演化 演化 演化基因重组是基因重组的过程.

更多相关视频

Recombineering Homologous Recombination Constructs in Drosophila14:23

Recombineering Homologous Recombination Constructs in Drosophila

Published on: July 13, 2013

19.3K
Rapid, Seamless Generation of Recombinant Poxviruses using Host Range and Visual Selection09:25

Rapid, Seamless Generation of Recombinant Poxviruses using Host Range and Visual Selection

Published on: May 24, 2020

5.2K

相关概念视频

Viral Recombination00:57

Viral Recombination

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
23.3K
Conservative Site-specific Recombination and Phase Variation02:53

Conservative Site-specific Recombination and Phase Variation

Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
5.9K
Exon Recombination02:32

Exon Recombination

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...
3.6K
Genome Size and the Evolution of New Genes03:21

Genome Size and the Evolution of New Genes

While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
7.9K
Gene Conversion02:08

Gene Conversion

Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
9.7K
Overview of Transposition and Recombination02:13

Overview of Transposition and Recombination

Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
15.2K