工程抗原结合片段用于增强抗体:抗原复合物的结晶
Heather A Bruce1, Alexander U Singer1, Ekaterina V Filippova2
1School of Pharmacy, University of Waterloo, Waterloo, Canada.
Protein science : a publication of the Protein Society
|November 9, 2023
概括
改善抗体片段 (Fab) 结晶是理解抗原相互作用的关键. 这项研究确定了增强Fab结晶的表面替代物,大大帮助了结构生物学研究.
科学领域:
- 结构生物学 结构生物学
- 蛋白质结晶学 蛋白质结晶学
- 免疫学 免疫学 免疫学
背景情况:
- X射线晶体学为抗体-抗原相互作用提供了原子分辨率的洞察力.
- 许多抗体碎片 (Fab):抗原复合体抵抗结晶,阻碍结构研究.
研究的目的:
- 为了确定增强人类Fab框架结晶性的表面替代.
- 为了研究结合不同Fab框架修改以改善结晶的协同效应.
主要方法:
- 采用了降低表面的策略和菌体显示技术来设计Fab变体.
- 对工程Fabs和Fab:抗原复合体进行了广泛的结晶选.
- 确定和分析结晶复合物的结构.
主要成果:
- 确定了特定的表面替代物,可以显著提高Fab框架的结晶性.
- 在将新替代品与水晶卡帕和肘部修改相结合时,显示出异常增强的结晶性.
- 揭示了不同组置换之间的强有力的协同关系.
结论:
- 降低表面和菌体显示对于工程结晶抗体碎片是有效的.
- 组合替代提供了协同效益,大大提高了Fab和Fab:抗原复合物的结晶性.
- 了解这些替代物的作用和互补性有助于对抗体-抗原相互作用的结构性确定.
相关概念视频
Immunoprecipitation
5.5K
Immunoprecipitation, or IP, is a widely used technique that employs protein-antibody interactions to isolate proteins or protein complexes in their native state for studying protein-protein interactions, quaternary structures, or supramolecular complexes. Various modifications of the technique, including chromatin IP, cross-linking IP, and fluorescence IP, are commonly used.
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
Chromatin Immunoprecipitation
Chromatin immunoprecipitation, also known as ChIP, is used to study protein-DNA or...
5.5K
Antibody Actions
1.1K
Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
Neutralization
Antibodies can bind to pathogens, preventing them from infecting host cells. This process...
1.1K
Antibody Structure
60.2K
Overview
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
Antibodies, also known as immunoglobulins (Ig), are essential players of the adaptive immune system. These antigen-binding proteins are produced by B cells and make up 20 percent of the total blood plasma by weight. In mammals, antibodies fall into five different classes, which each elicits a different biological response upon antigen binding.
The Y-Shaped Structure of Antibodies Consists of Four Polypeptide Chains
Antibodies consist of four polypeptide chains: two identical heavy...
60.2K


