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相关概念视频

Protein-protein Interfaces02:04

Protein-protein Interfaces

14.7K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.7K
Protein and Protein Structure02:15

Protein and Protein Structure

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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
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Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
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What are Proteins?01:55

What are Proteins?

239.0K
Overview
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Protein Networks02:26

Protein Networks

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An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
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Protein Families02:47

Protein Families

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Protein families are groups of homologous proteins; that is, they have similarities in amino acid sequences and three-dimensional structures. Protein families usually occur because of gene duplication, where an additional copy of a gene is inserted into the genome of an organism.   Mutations that change the amino acids but still allow the protein to be properly synthesized, will lead to new protein family members.   If these new proteins contain similar amino acids in key...
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相关实验视频

Updated: Jan 31, 2026

Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli
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Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli

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在EBNA3蛋白质的EBNA3蛋白.

Robert E White1

  • 1Section of Virology, Department of Infectious Disease, Imperial College London, London, UK. robert.e.white@imperial.ac.uk.

Current topics in microbiology and immunology
|January 29, 2026
PubMed
概括
此摘要是机器生成的。

爱斯坦-巴尔病毒利用EBV核抗原 (EBNA),特别是EBNA3家族,操纵B细胞生物学,以改变细胞表观遗传学,生存和功能. 它们在B细胞癌中的作用是复杂的,具有促进瘤和抑制瘤的活动.

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科学领域:

  • 病毒学 病毒学
  • 分子生物学分子生物学
  • 免疫学 免疫学 免疫学

背景情况:

  • 爱斯坦-巴尔病毒 (EBV) 深刻影响B细胞生物学,驱动激活,增殖和生存.
  • 主体细胞基因组和转录组的表观遗传重编程是EBV的B细胞操纵的核心.
  • EBV核抗原 (EBNA) 是调解这些细胞变化的关键作用者.

研究的目的:

  • 阐明EBNA3家族蛋白质 (EBNA3A,EBNA3B,EBNA3C) 在EBV介导的B细胞操纵中的作用.
  • 详细介绍EBNA3基因表达和调控机制的基因组和转录组背景.
  • 探索EBNA3蛋白对B细胞存活,分化和功能的影响,包括致癌潜力.

主要方法:

  • 对EBNA3蛋白及其功能现有文献的综述.
  • 分析与EBNA3表达相关的基因组和转录组数据.
  • 检查研究EBNA3蛋白质作用的小鼠模型的发现.

主要成果:

  • EBNA3蛋白对于EBV对B细胞的表观遗传控制至关重要.
  • 这些蛋白调节宿主基因表达,影响B细胞的生存,分化和功能.
  • 鼠标模型显示EBNA3蛋白质的双重作用,在B细胞恶性瘤中起到亲和抗瘤因子的作用.

结论:

  • EBNA3家族在EBV驱动的B细胞病理学中发挥着多方面的作用.
  • 了解EBNA3监管机制对于破译EBV的致癌潜力至关重要.
  • 需要进一步的研究才能完全解决EBNA3蛋白质的复杂作用和调节问题.