相关实验视频

Updated: Jul 16, 2025

A Method to Study de novo Formation of Chromatin Domains
00:07

A Method to Study de novo Formation of Chromatin Domains

Published on: August 23, 2019

5.4K

聚合物抑制复合体2沉积H3K27me3并抑制广泛的真核生物中的可转移元素

Tetsuya Hisanaga1, Facundo Romani2, Shuangyang Wu1

  • 1Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter, Dr. Bohr-Gasse 3, 1030 Vienna, Austria.

Current biology : CB
|September 22, 2023
PubMed
概括

多镇压复合体2 (PRC2) 在多种类型的真核生物 (包括藻和红藻) 中使可转移元素 (TE) 沉默. 这种由PRC2进行的表观遗传沉默表明,在基因组调节中起到了古老的作用,可以追溯到早期的真核生物.

关键词:
这种植物是Anthoceros agrestis.阿拉比多普西斯塔利亚纳.二氧化碳的含量是多少? 二氧化碳的含量是多少H3K27me3 在线阅读马尔坎蒂亚多态植物 (Marchantia polymorpha) 是一个多态植物.在 PRC2 中,PRC2 是 PRC2 的第一个类型.菲奥达克提勒姆三角形.在这种情况下,染色染色素进化 演化 演化 演化 演化 演化 演化 演化转换一个转换器.

更多相关视频

In Vitro Selection of Engineered Transcriptional Repressors for Targeted Epigenetic Silencing10:44

In Vitro Selection of Engineered Transcriptional Repressors for Targeted Epigenetic Silencing

Published on: May 5, 2023

1.5K
Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers10:28

Repressing Gene Transcription by Redirecting Cellular Machinery with Chemical Epigenetic Modifiers

Published on: September 20, 2018

6.5K

相关概念视频

Eukaryotic Transcription Inhibitors01:52

Eukaryotic Transcription Inhibitors

Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
9.9K
Heterochromatin02:38

Heterochromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions that take up more dye are called heterochromatin. Heterochromatin is further classified into two forms – constitutive heterochromatin and facultative heterochromatin.
Constitutive heterochromatin: It is a highly compact region of chromatin that is mostly concentrated in the centromere and telomere. Unlike euchromatin, the amino acid at...
13.8K
Euchromatin01:01

Euchromatin

The extent of chromatin compaction can be studied by staining chromatin using specific DNA binding dyes. Under the microscope, the dense-compacted regions take up more dye, appearing darker, while the less-compact areas take up less dye and appear lighter. Based on the compaction level, chromatins are classified into two primary forms – euchromatin and heterochromatin.
Euchromatin is the less dense region of the chromatin and stains lighter. Euchromatin contains histone H3 extensively...
7.0K
Co-activators and Co-repressors02:04

Co-activators and Co-repressors

Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
7.4K
RNA Polymerase II Accessory Proteins02:36

RNA Polymerase II Accessory Proteins

Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
9.2K
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...
15.6K