相关实验视频
Updated: Jul 27, 2026

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Analyzing and Building Nucleic Acid Structures with 3DNA
Published on: April 26, 2013
DNA结合域的结构分类
1Howard Hughes Medical Institute, Harvard University, Cambridge, Massachusetts 02138.
Nature
|October 24, 1991
概括
DNA 结合域使用多种结构来识别特定的 DNA 位点. 了解这些设计是解读基因调节和开发新疗法的关键.
科学领域:
- 分子生物学分子生物学
- 结构生物学 结构生物学
- 遗传学 是一个遗传学.
背景情况:
- DNA 结合域对于调节基因表达至关重要.
- 蛋白质对DNA序列的特定识别对细胞过程至关重要.
- 了解DNA-蛋白相互作用的结构基础是必不可少的.
研究的目的:
- 探索DNA结合域的结构多样性.
- 阐明使特定DNA位点识别成为可能的各种分子设计.
主要方法:
- 不同的DNA结合域类别的比较结构分析.
- 审查现有的晶体学和NMR数据.
主要成果:
- 确定了多个不同的DNA结合域的结构类.
- 证明了DNA序列特异性的各种分子策略.
结论:
- DNA 结合域的结构谱系非常广泛.
- 多种不同的蛋白质架构已经进化为精确的DNA识别.
相关概念视频
The DNA Helix
Overview
Conservation of Protein Domains Over Different Proteins
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Single-Strand DNA Binding Proteins
For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
The DNA Helix
Deoxyribonucleic acid, or DNA, is the genetic material responsible for passing traits from generation to generation in all organisms and most viruses. DNA is composed of two strands of nucleotides that wind around each other to form a spring-like structure called a double helix. However, the double helix is not perfectly symmetrical. Instead, there are regularly occurring grooves in the structure. The major groove occurs where the sugar-phosphate backbones are relatively far apart. This space...
Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...

