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相关概念视频

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

Histone Modification

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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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Internal Receptors01:31

Internal Receptors

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Many cellular signals are hydrophilic and therefore cannot pass through the plasma membrane. However, small or hydrophobic signaling molecules can cross the hydrophobic core of the plasma membrane and bind to internal, or intracellular, receptors that reside within the cell. Many mammalian steroid hormones use this mechanism of cell signaling, as does nitric oxide (NO) gas.
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Enzyme-linked Receptors01:00

Enzyme-linked Receptors

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Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
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Receptor-mediated Endocytosis01:39

Receptor-mediated Endocytosis

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Overview
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相关实验视频

Updated: Feb 11, 2026

Purification of Tubulin with Controlled Posttranslational Modifications and Isotypes from Limited Sources by Polymerization-Depolymerization Cycles
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通过翻译后修饰来控制伊诺西1,4,5-三酸盐受体活性.

Maarten Vanmunster1, Ian de Ridder1, Manon Callens1

  • 1Laboratory of Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine, KU Leuven, BE-3000 Leuven, Belgium.

Cold Spring Harbor perspectives in biology
|February 9, 2026
PubMed
概括
此摘要是机器生成的。

翻译后修改 (PTMs) 微调伊诺西1,4,5-三酸盐受体 (IP3Rs) 的活性. 这些修改对于调节 (Ca2+) 信号和维持细胞平衡至关重要,影响各种疾病.

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科学领域:

  • 细胞生物学 细胞生物学
  • 分子神经科学 分子神经科学
  • 生物化学 生物化学

背景情况:

  • 伊诺西1,4,5-三酸盐受体 (IP3Rs) 对于来自内细胞网膜的 (Ca2+) 信号传递至关重要.
  • 通过IP3Rs进行失调的Ca2+信号传递与许多疾病有关.
  • 严格监管IP3R功能,丰度和定位是必不可少的.

研究的目的:

  • 审查规范IP3R活动的各种后翻译修改 (PTM).
  • 探索这些PTM的功能和结构后果.
  • 突出PTM对IP3R监管的异型特异性影响.

主要方法:

  • 文献审查侧重于IP3Rs的PTMs.
  • 分析与修改IP3R残留物相关的功能和结构数据.
  • 综合各种PTM信息,包括酸化,氧化还原,糖化,棕化,无处不在化,蛋白质分解和交叉链接.

主要成果:

  • 酸化,氧化还原,糖化,棕化,无化,蛋白质分解和交叉链接等PTM显著调节IP3R活性.
  • 特定的PTM已经确定了残留目标,提供了结构性见解.
  • 在IP3R中,PTM表现出异型特异性的监管效应.

结论:

  • PTM是IP3R功能的关键调节者,影响Ca2+信号传输.
  • 了解这些修改为IP3R控制健康和疾病提供了细微的观点.
  • 对PTM的进一步研究可以揭示与Ca2+信号传递相关的疾病的治疗点.