相关实验视频
Updated: May 10, 2026
11:14
Primer-Free Aptamer Selection Using A Random DNA Library
Published on: July 26, 2010
24.8K
针对PTK7的DNA合体的基于结构的调查揭示了一个复杂的3D折叠指导功能优化
Axin He1,2, Liqi Wan1,2, Yuchao Zhang2
1Institute of Molecular Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.
概括
这项研究通过揭示sgc8c吸收体来优化DNA吸收体对癌症疗效的检测.
科学领域:
- 分子生物学分子生物学
- 生物化学 生物化学
- 结构生物学 结构生物学
背景情况:
- DNA 体为疾病治疗提供了高度的亲和力和特异性.
- 由于忽视了原子相互作用和稀缺的3D结构数据,优化aptamer功能受到阻碍.
- 了解DNA体结构-功能关系对于治疗应用至关重要.
研究的目的:
- 用溶液NMR.来研究sgc8cDNA吸收体的3D结构.
- 识别 sgc8c 体内的关键核酸和功能元素.
- 为了设计增强的sgc8c变体,以改善癌症治疗特征.
主要方法:
- 解决方案核磁共振 (NMR) 光谱学. 解决方案核磁共振 (NMR) 光谱学.
- 核磁共振化学转移干扰和局部定向的突变发生.
- 3D结构建模和分析.
主要成果:
- sgc8c 合体采用三向结 (3WJ) 结构,由三级相互作用稳定.
- 在3WJ核心的基本核酸被确定为关键的功能元素.
- 改造后的sgc8c变种显示出增强的热稳定性,生物稳定性和结合亲和力.
结论:
- 基于简化NMR的方法可以在没有复杂的结构确定的情况下阐明和优化DNA体结构.
- 该研究提供了理解和设计DNA吸收体结构-功能关系的原则.
- 优化的sgc8c受体表现出改善癌症治疗效果的潜力.
相关概念视频
01:16The DNA Helix
Overview
01:23RNA Structure
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
01:56Structural Protein Function
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
01:56Structural Protein Function
Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
Collagen, the most abundant protein in mammals, is found throughout the body. In connective tissue, such as skin, ligaments, and tendons, it provides tensile strength and elasticity. In bones and teeth, it mineralizes to form...
01:25Nucleic Acid Structure
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...