具有球形蛋白节点的金属有机框架:三维蛋白质晶体的合理化学设计
Pamela A Sontz1, Jake B Bailey1, Sunhyung Ahn1
1Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, La Jolla, California 92093, United States.
Journal of the American Chemical Society
|August 26, 2015
概括
研究人员使用蛋白节点和金属有机连接器创建了一个新的晶体框架. 这种自组装结构是同类首个, 证明了先进材料的精确格子形成.
科学领域:
- 材料科学
- 生物技术
- 纳米技术
背景情况:
- 基于蛋白质的材料具有独特的结构特性.
- 金属有机框架 (MOF) 以其多孔性和可调节结构而闻名.
- 结合蛋白质和MOF可以产生新型混合材料.
研究的目的:
- 使用蛋白节点和金属有机连接器构建一个三维,多孔,晶体框架.
- 设计具有指导自组合的特定协调位点的铁素蛋白.
- 为了证明三元蛋白-金属-有机晶体框架的形成.
主要方法:
- 工程铁储存酶, 铁素, 三脚Zn协调站点在它的毛孔.
- 使用动态光散射和晶体学研究来分析自组装过程.
- 使用与酸功用组的二极管连接剂来指导晶体形成.
主要成果:
- 成功组装Zn-ferritin构成一个以身体为中心的立方 (bcc型) 晶格.
- 由金属-有机连接器指导的相互作用驱动的强大的自组装.
- 建立了依赖蛋白质,金属和链接元件的三元框架的形成.
结论:
- 这项工作呈现了第一个完全依赖组件的三元蛋白质-金属-有机晶体框架.
- 设计的费里和链接系统能够精确控制晶体结构的形成.
- 这种方法为设计基于蛋白质的先进纳米材料开辟了道路.
相关概念视频
01:13Protein Organization
Overview
01:13Protein Organization
Overview
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.
02:21Globular and Fibrous Proteins
Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
02:15Protein and Protein Structures
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...
01:24Protein 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.