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相关概念视频

Histone Modification02:32

Histone Modification

16.0K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
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Histone Modification02:32

Histone Modification

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Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

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The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
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Spreading of Chromatin Modifications02:25

Spreading of Chromatin Modifications

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The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
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Histone Variants at the Centromere02:30

Histone Variants at the Centromere

5.0K
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
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Behavior Modification01:21

Behavior Modification

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Behavioral approaches have often been criticized for ignoring mental processes and focusing solely on observable behavior. However, these approaches provide an optimistic perspective for individuals seeking to change their behaviors. Rather than concentrating on intrinsic personality traits, behavioral approaches suggest that even longstanding habits can be modified by changing the reward contingencies that maintain them.
A real-world application of operant conditioning principles is applied...
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Detection of Histone Modifications in Plant Leaves
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通过细菌病原体重新编程宿主基斯顿的修饰.

Shira Zelikman1, Sun-Ju Yi1, Kyunghwan Kim1

  • 1Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea.

Molecules and cells
|January 25, 2026
PubMed
概括
此摘要是机器生成的。

细菌病原体操纵宿主表观遗传调节以确保生存. 病原体改变宿主染色体,影响基因表达,以逃避免疫反应并建立持久感染.

关键词:
细菌病原体是一种细菌病原体.主体和微生物的相互作用.主体组织基因素的修改.

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科学领域:

  • 微生物学 微生物学
  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
  • 宿主-病原体相互作用

背景情况:

  • 细菌病原体采用各种策略来操纵宿主细胞.
  • 人们越来越认识到表观遗传调节对宿主-病原体相互作用至关重要.
  • 病原体可以直接修改基因组或间接改变表观遗传状态.

研究的目的:

  • 审查了解细菌对宿主染色质的操纵方面的最新进展.
  • 突出表观遗传重编程在感染结果中的作用.
  • 总结细菌利用宿主表观遗传调节的机制.

主要方法:

  • 关于细菌毒性和宿主表观遗传调节的当前文献的综述.
  • 对病原体直接和间接表观遗传调制机制的分析.
  • 综合了关于表观遗传变化对宿主反应影响的发现.

主要成果:

  • 病原体利用细菌的效应蛋白直接修改组织蛋白.
  • 细菌通过改变信号通路和新陈代谢来间接影响宿主表观遗传.
  • 这些表观遗传变化重塑宿主转录程序,影响免疫反应和感染持久性.

结论:

  • 细菌病原体的表观遗传重编程是决定感染结果的关键因素.
  • 了解这些表观遗传相互作用对于开发新的治疗策略至关重要.
  • 细菌毒性和宿主染色体调节之间的动态相互作用为传染病提供了新的见解.