相关实验视频

Updated: Jul 27, 2025

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

Published on: September 11, 2017

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表观遗传景观在很大程度上是由Aegilops tauschii中的多样化转位子形成的

Chuizheng Kong1, Guangyao Zhao1, Lifeng Gao1

  • 1National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.

International journal of molecular sciences
|June 10, 2023
PubMed
概括

可转移元素 (TE) 在很大程度上塑造了小麦基因组. 这项研究揭示了TE如何影响小麦D基因组捐赠者Aegilops tauschii的表观遗传景观和基因调节.

关键词:
染色质可访问性 染色质可访问性染色体状态 染色体状态基斯顿基因基因基因基因基因基因基因基因基因基因基因基因基因基因转位子转位子小麦小麦小麦小麦小麦小麦小麦.

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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...
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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...
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In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
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