在α,β-中结构和功能之间的意想不到的关系:具有异质脊柱的抗菌折叠体
Margaret A Schmitt1, Bernard Weisblum, Samuel H Gellman
1Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, USA.
Journal of the American Chemical Society
|June 4, 2004
概括
设计抗微生物alpha/beta-peptides显示,一个混杂的对照显示出最好的活性. 这表明,仅专注于全球两结构可能会限制有效的抗微生物设计.
科学领域:
- 生物化学 生化学
- 药用化学 医学化学
- 分子生物学分子生物学
背景情况:
- 抗微生物 (AMP) 在天生的免疫力中至关重要.
- 设计具有高疗效和低毒性的合成AMP是一种重大挑战.
- 螺旋式折叠行为是体设计中的一个关键考虑因素.
研究的目的:
- 探索新型抗微生物α/β-的设计.
- 调查螺旋折叠与抗菌活性之间的关系.
- 为了确定有效的抗微生物设计原则.
主要方法:
- 利用基于螺旋式折叠的计算设计策略.
- 合成和表征的α/β-类同类物.
- 对各种病原体进行评估的抗微生物活性.
- 评估了对红细胞的血液溶解活性.
主要成果:
- 设计为负控制的α/β-3显示出强大的抗菌活性.
- 这种也表现出较低的溶血活性,表明了有利的安全性.
- 最有前途的候选人偏离了典型的两结构预测.
结论:
- 该研究的发现挑战了抗菌的传统设计原则.
- 仅专注于全球两结构可能会忽视有效的抗菌候选药物.
- 一个编码的序列可以产生优越的抗微生物和安全性.
相关概念视频
01:13Protein Organization
Overview
01:10Antibody Structure
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...
02:15Protein 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...
01:10Antibody Structure
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...
01:24Protein Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.
01:25Antibody Structure and Classes
Antibodies, also known as immunoglobulins, are produced by B cells in response to foreign substances, such as bacteria and viruses. These proteins are critical for recognizing and neutralizing these substances, protecting the body from potential harm.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.
The basic structure of an antibody consists of four protein chains: two identical heavy chains and two identical light chains. These chains are held together by disulfide bonds and other non-covalent interactions, forming a Y-shaped structure.