相关实验视频

Updated: Jul 28, 2025

Determination of the Optimal Chromosomal Locations for a DNA Element in Escherichia coli Using a Novel Transposon-mediated Approach
11:12

Determination of the Optimal Chromosomal Locations for a DNA Element in Escherichia coli Using a Novel Transposon-mediated Approach

Published on: September 11, 2017

7.6K

有针对性的IS元素测序揭示了在肠球菌中选择性压力期间的转位动态

Joshua M Kirsch1, Shannon Ely1, Madison E Stellfox2

  • 1Department of Immunology and Microbiology, University of Colorado-Anschutz Medical Campus, School of Medicine, Aurora, Colorado, United States of America.

PLoS pathogens
|June 2, 2023
PubMed
概括

菌体和抗生素等压力因素推动了肠球菌的快速基因组进化. 插入序列 (IS) 元素IS256的多样化解释了这些压力如何导致危险的医院适应的细菌系的出现.

更多相关视频

Generation of Enterobacter sp. YSU Auxotrophs Using Transposon Mutagenesis13:31

Generation of Enterobacter sp. YSU Auxotrophs Using Transposon Mutagenesis

Published on: October 31, 2014

14.0K
Creation of a Dense Transposon Insertion Library Using Bacterial Conjugation in Enterobacterial Strains Such As Escherichia Coli or Shigella flexneri11:36

Creation of a Dense Transposon Insertion Library Using Bacterial Conjugation in Enterobacterial Strains Such As Escherichia Coli or Shigella flexneri

Published on: September 23, 2017

16.1K

相关概念视频

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...
15.9K
Transposons01:24

Transposons

Transposons, or "jumping genes," are small mobile genetic elements (MGEs) that range from 700 to 40,000 base pairs in length. They are found in all organisms and can move within the same chromosome or transfer to different chromosomes. In some cases, transposons can also jump between different host DNA molecules, such as plasmids or viruses, contributing to genetic variability.Barbara McClintock first discovered these mobile genetic elements in the 1940s while studying maize genetics, and she...
66
DNA-only Transposons02:57

DNA-only Transposons

DNA-only transposons are called autonomous transposons since they code for the enzyme transposase that is required for the transposition mechanism. Insertion of transposons can alter gene functions in multiple ways. They can mutate the gene, alter gene expression by introducing a novel promoter or insulator sequence, introduce new splice sites, and change the mRNA transcripts produced, or remodel chromatin structure.
The donor site from where the transposon is excised is either degraded or...
14.6K
Antibiotic Selection00:57

Antibiotic Selection

Overview
54.8K
Transduction01:16

Transduction

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome...
49