和多基基物质与牛奶中的β-乳糖球蛋白的结合
P Chi Pham1, Mackenzie Taylor1, Giang T H Nguyen1
1School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.
Chemical research in toxicology
|April 16, 2024
概括
这项研究揭示了持久性per-和多醇基物质 (PFAS) 如何与牛乳糖蛋白β-乳糖球蛋白 (β-LG) 结合. 贝塔-环氧化显示了减少乳制品中PFAS积累的潜力.
科学领域:
- 环境化学环境化学
- 生物化学 生化学
- 毒理学 毒理学 毒理学
背景情况:
- 和多醇基物质 (PFAS) 是乳制品中发现的持续性环境污染物.
- 乳制品中PFAS积累的机制,特别是通过蛋白质相互作用,尚不清楚.
研究的目的:
- 为了研究各种PFAS和牛β-乳糖球蛋白 (β-LG) 异型之间的结合相互作用.
- 为了阐明PFAS在β-LG上的结合点和亲缘关系.
- 探索β-环氧在缓解PFAS-β-LG相互作用方面的潜力.
主要方法:
- 原生质谱测试用于分析PFAS-β-LG结合.
- 分子动力学模拟以模拟相互作用.
- 使用内源性配体进行定量竞争性结合试验.
主要成果:
- 在19种测试的PFAS中,有6种结合于两种β-LG异型,具有低至中微分子亲和力.
- PFAS优先结合于β-LG的疏水性联体结合.
- 通过将PFAS从溶液中隔离,β-环氧素有效地抑制了PFAS的结合.
结论:
- 确定了PFAS-β-LG结合相互作用,可能会影响牛乳腺中的脂质运输.
- 贝塔-环氧化为减少乳制品和生物系统中PFAS积累提供了一种可行的策略.
相关概念视频
Protein Organization
Overview
Protein and Protein Structure
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 can...
A protein's shape is critical to its function. For example, an enzyme can...
Protein Complex Assembly
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...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Protein Complex Assembly
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...
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...


