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相关概念视频

Human Genetics01:28

Human Genetics

629
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
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Activation and Inactivation of G Proteins01:22

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Heterotrimeric G proteins are guanine nucleotide-binding proteins. As the name suggests, heterotrimeric G proteins are composed of three subunits: alpha, beta, and gamma. They remain GDP-bound or GTP-bound inside the cells and switch between inactive/active states. The Gα subunit possesses the nucleotide-binding pocket that binds guanine nucleotides and switches between GDP or GTP-bound states. In contrast, the Gꞵ and Gγ subunits are always bound together with high...
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Transducer Mechanism: G Protein–Coupled Receptors01:30

Transducer Mechanism: G Protein–Coupled Receptors

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G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
GPCRs are also called heptahelical,...
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相关实验视频

Updated: Jul 29, 2025

Methods for the Discovery of Novel Compounds Modulating a Gamma-Aminobutyric Acid Receptor Type A Neurotransmission
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PE_PGRS多态的结构基础,功能调制的工具.

Eliza Kramarska1, Flavio De Maio2, Giovanni Delogu3,4

  • 1Institute of Biostructures and Bioimaging, IBB, CNR, 80131 Naples, Italy.

Biomolecules
|May 27, 2023
PubMed
概括

在Mycobacterium tuberculosis (Mtb) 中的PE_PGRS蛋白家族表现出高的多态性,影响了Mtb的进化和发病. 结构分析揭示了这些变化如何影响Mtb健康和传播.

关键词:
在PE_PGRS中,您可以使用PE_PGRS.多形态主义的多形态主义.蛋白质结构 蛋白质结构结核病是一种肺结核病.

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科学领域:

  • 微生物学 微生物学
  • 结构生物学 结构生物学
  • 进化生物学 进化生物学

背景情况:

  • 该PE_PGRS蛋白家族是致病性菌根菌株的独特特征,包括Mycobacterium tuberculosis (Mtb).
  • 它们的PGRS域中的多态性与抗原变异和病原体生存有关.
  • 了解这些域对于Mtb病原和进化至关重要.

研究的目的:

  • 为了研究PE_PGRS蛋白质多态性在Mtb中的结构和功能影响.
  • 为了将结构变异与Mtb菌株适应性和传播相关联.
  • 探索多态性在Mtb进化中的作用.

主要方法:

  • 使用AlphaFold2.0进行蛋白质结构建模.
  • 进行了蛋白质序列的遗传学和频率分析.
  • 进行了抗原预测和与观察到的表型相关的结构性影响.

主要成果:

  • 模拟PE_PGRS33的多态变体,预测突变的结构效应.
  • 与观察到的变异频率和表型特征相关的预测结构.
  • 确定了与Mtb演变和增强适应性相关的特定PE_PGRS变体.

结论:

  • 描述了PE_PGRS33多态的结构影响,将其与Mtb菌株适应性联系起来.
  • 特定的蛋白质变异与细菌进化有关,这表明它们具有功能获取作用.
  • 在PE_PGRS蛋白质中的多态性在Mtb进化和传播中起着重要作用.