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相关概念视频

Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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The Proteasome02:18

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Eukaryotic cells can degrade proteins through several pathways. One of the most important amongst these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
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The Proteasome01:13

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Eukaryotic cells can degrade proteins through several pathways. One of the most important among these is the ubiquitin-proteasome pathway. It helps the cell eliminate the misfolded, damaged, or unwarranted cytoplasmic proteins in a highly specific manner.
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Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
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相关实验视频

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Cell Type-specific Gene Expression Profiling in the Mouse Liver
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蛋白酶体活动维持细胞类型特定的基因表达.

Xiuxiu Lu1, Vasty Osei-Amponsa1, Germán Michelis2

  • 1Protein Processing Section, Center for Structural Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA.

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概括
此摘要是机器生成的。

蛋白质酶活性对于通过调节基因表达来维持细胞身份至关重要. 在hRpn10/PSMD4中失去ubiquitin-binding会破坏这一过程,导致蛋白质表达错误和细胞类型的改变.

关键词:
科普:分子生物学在OTUD5中,我们可以使用OTUD5.PSMD4 PSMD4 在线播放在 Rpn1010 中使用.细胞身份是细胞的身份.基因表达的基因表达方式蛋白质酶体蛋白质组是什么蛋白质降解 蛋白质降解组织特异性 组织特异性转录规则 转录规则 转录规则在任何地方都是无处不在的.

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科学领域:

  • 分子生物学分子生物学
  • 细胞生物学 细胞生物学
  • 生物化学 生物化学

背景情况:

  • 通过ubiquitin-proteasome系统调节的蛋白质分解对于细胞功能至关重要,如蛋白质质量控制,细胞循环和DNA修复.
  • 蛋白质酶基质受体hRpn10/PSMD4的泛素结合活性对于基质的识别和降解至关重要.

研究的目的:

  • 研究蛋白质酶活性,特别是hRpn10/PSMD4的泛胺结合功能在维持细胞身份中的作用.
  • 为了确定蛋白酶体功能障碍影响细胞类型特定基因表达的分子机制.

主要方法:

  • 分析表达截断的hRpn10缺乏泛素相互作用动机 (hRpn10VWA) 的细胞.
  • 蛋白质组和转录组分析以识别失调的蛋白质和基因表达模式.
  • 研究OTUD5积累在观察到的表型中的作用.

主要成果:

  • 丧失hRpn10泛素结合活性导致显著的蛋白质失调.
  • 改变的蛋白质显示了组织特异性因素的过度表现,表明细胞身份的丧失.
  • OTUD5的积累,一个二维基因酶和转录调节剂,有助于转录失调.

结论:

  • 蛋白质酶依赖的机制对于保护细胞类型特定的基因表达程序至关重要.
  • 蛋白质体功能超出了基本的细胞维护范围,包括细胞身份的治理.
  • 在hRpn10/PSMD4中破坏乌比基结合会通过转录失调损害细胞身份.