在 de novo 设计的卷轴-卷轴组件中,交换,乱交和正交
Kathleen W Kurgan1,2, Freddie J O Martin1, William M Dawson1
1School of Chemistry, University of Bristol Cantock's Close Bristol BS8 1TS UK d.n.woolfson@bristol.ac.uk.
Chemical science
|December 25, 2024
概括
新设计的卷轴-卷轴被研究了它们的动态交换特性. 研究人员开发了一种新的测试方法来测量交换,改进了合成生物学中忠实的同类寡合组合的设计策略.
科学领域:
- 合成生物学 合成生物学
- 蛋白质工程是一种蛋白质工程.
- 生物物理化学 生物物理化学
背景情况:
- 新的蛋白质设计迅速产生新的和蛋白质结构.
- 许多设计的多呈现出明确和高热稳定的结构.
- 对新设计的蛋白质的动态性质的理解较少.
研究的目的:
- 在 de novo 卷轴-卷轴组件中探索交换动态.
- 开发和应用一种基于光的测定方法来测量交换.
- 为了研究提高设计的卷轴-卷轴寡合体的正交度的策略.
主要方法:
- 开发一种基于光的记者试验,用于交换.
- 测试的应用,以研究同型和异型交换.
- 在各种寡合体状态 (二聚体到六聚体) 中对交换的分析.
- 实施涉及盐桥定位和非正规重复的设计策略.
主要成果:
- 一个二次卷绕线圈 (CC-Di) 显示在200μM度下同型交换半衰期为4.2±0.3分钟.
- 一些卷轴-卷轴设计表现出乱交的交换,形成意想不到的异质寡合体.
- 设计策略成功地提高了正交性,产生了忠实的同类寡合.
- 开发的试验是一种简单的工具,用于研究类似系统中的交换.
结论:
- 交换动态是新型蛋白质设计的一个关键,但经常被忽视的方面.
- 开发的光检测方法为表征交换提供了一种有价值的方法.
- 战略设计修改可以控制卷-卷组件的乱交,从而导致直角相互作用.
- 这些发现推动了de novo卷轴卷轴在化学和合成生物学中的模块化组件的应用.
相关概念视频
Protein Folding
7.8K
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
7.8K
Protein Organization
6.2K
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....
6.2K
Peptide Bonds
72.8K
A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
72.8K
Protein Complexes with Interchangeable Parts
1.8K
1.8K
Protein Complex Assembly
10.6K
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...
10.6K
Assembly of Signaling Complexes
5.7K
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
5.7K


