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相关概念视频

Protein Complex Assembly02:41

Protein Complex Assembly

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
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Positive Regulator Molecules02:39

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Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
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Retrovirus Life Cycles01:10

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Retroviruses have a single-stranded RNA genome that undergoes a special form of replication. Once the retrovirus has entered the host cell, an enzyme called reverse transcriptase synthesizes double-stranded DNA from the retroviral RNA genome. This DNA copy of the genome is then integrated into the host’s genome inside the nucleus via an enzyme called integrase. Consequently, the retroviral genome is transcribed into RNA whenever the host’s genome is transcribed, allowing the...
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相关实验视频

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Isolation of Viral Replication Compartment-enriched Sub-nuclear Fractions from Adenovirus-infected Normal Human Cells
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HBO1/KAT7/MYST2 HAT复合体调节人类腺病毒复制周期.

Heba Kamel1, Varsha Shete1, Sayikrushna Gadamsetty1

  • 1Microbiology and Immunology Department, Fienberg School of Medicine, Northwestern University, Chicago, USA.

Heliyon
|April 11, 2024
PubMed
概括

人类腺病毒 (HAdV) 招募HBO1基因组酸转移酶复合体进行复制. 降低HBO1的调节会通过影响病毒促进体的基因乙化来降低病毒基因表达和HAdV5的生长.

关键词:
5型腺病毒 5型腺病毒染色是一种染色素.这是E1AA.帽子 帽子 帽子在HBO1 HBO1上播放.病毒复制是病毒的复制.

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Cloning and Large-Scale Production of High-Capacity Adenoviral Vectors Based on the Human Adenovirus Type 5
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科学领域:

  • 病毒学 病毒学
  • 分子生物学分子生物学
  • 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

  • 人类腺病毒 (HAdV) 是利用细胞机械进行复制的DNA瘤病毒.
  • 了解病毒劫持宿主细胞过程是病毒学研究的关键.
  • HBO1 (组织酸转移酶与ORC1结合) 是一种参与细胞增殖的组织酸转移酶复合体.

研究的目的:

  • 研究HBO1在5型人类腺病毒 (HAdV5) 复制中的作用.
  • 为了确定HBO1是否会在感染期间影响病毒基因表达和基因素乙化.

主要方法:

  • 在人类细胞中降低HBO1的调节,随后发生HAdV5感染.
  • 对病毒早期基因表达的分析 (例如,E1A).
  • 在使用ChIP的病毒促销剂中评估H3氨酸14乙化.
  • 检测HBO1与病毒促进体和复制中心的关联.
  • 同免疫沉试验研究E1A和HBO1的相互作用.

主要成果:

  • 降低HBO1的调节显著降低了HAdV5的生长和早期病毒基因表达.
  • 在HBO1-低调细胞中观察到病毒促进体的减少H3氨酸14乙化.
  • 发现HBO1与病毒促进体相关,并与病毒复制中心同定位.
  • 过度表达E1A刺激了HBO1活动,E1A与HBO1共同免疫.

结论:

  • HAdV5积极招募HBO1 HAT复合体以促进病毒复制.
  • 在促进病毒基因表达的过程中,HBO1通过基因组酸性化对病毒促进体起到关键作用.
  • HAdV和HBO1之间的相互作用突出了一个新的病毒利用宿主表观遗传机制的机制.