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Histone Modification02:32

Histone Modification

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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

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Defense Against Bacterial Pathogens01:31

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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

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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

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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

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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.
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Detection of Histone Modifications in Plant Leaves
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細菌病原体による宿主ヒストン修飾のリプログラミング

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
まとめ
この要約は機械生成です。

細菌病原体は生存を確保するために宿主のエピジェネティック制御を操作する。病原体は宿主のクロマチンを変化させ、免疫応答を回避し、持続的な感染を確立するために遺伝子発現に影響を与える。

キーワード:
細菌病原体宿主と微生物の相互作用宿主ヒストン修飾

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科学分野:

  • 微生物学
  • エピジェネティクス
  • 宿主と病原体の相互作用

背景:

  • 細菌病原体は、宿主細胞を操作するために多様な戦略を採用している。
  • エピジェネティック制御は、宿主と病原体の相互作用において重要であることがますます認識されている。
  • 病原体は、ヒストンを直接修飾するか、エピジェネティック状態を間接的に変化させることができる。

研究 の 目的:

  • 細菌による宿主クロマチンの操作の理解における最近の進歩をレビューする。
  • 感染転帰におけるエピジェネティックリプログラミングの役割を強調する。
  • 細菌が宿主のエピジェネティック制御を悪用するメカニズムを要約する。

主な方法:

  • 細菌の病原性と宿主のエピジェネティック制御に関する現在の文献のレビュー。
  • 病原体による直接的および間接的なエピジェネティック調節メカニズムの分析。
  • 宿主応答に対するエピジェネティック変化の影響に関する発見の統合。

主要な成果:

  • 病原体は、細菌エフェクタータンパク質を利用してヒストンを直接修飾する。
  • 細菌は、シグナル伝達経路や代謝を変化させることにより、宿主のエピジェネティクスに間接的に影響を与える。
  • これらのエピジェネティックな変化は、宿主の転写プログラムを再形成し、免疫応答や感染の持続に影響を与える。

結論:

  • 細菌病原体によるエピジェネティックリプログラミングは、感染転帰を決定する上で重要な要因である。
  • これらのエピジェネティックな相互作用を理解することは、新しい治療戦略を開発するために不可欠である。
  • 細菌の病原性と宿主クロマチン制御の間の動的な相互作用は、感染症に対する新たな洞察を提供する。