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相关概念视频

The DNA Helix01:16

The DNA Helix

Overview
The DNA Helix01:16

The DNA Helix

Overview
DNA as a Genetic Template02:05

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
Genome Copying Errors02:46

Genome Copying Errors

DNA replication is a well-evolved process that copies millions of base pairs with high fidelity during each cell division. Occasionally a wrong base or a long stretch of wrong bases may get added to the daughter strands. If the errors are left unchecked, cells might accumulate several mutations that might endanger their  survival. Therefore, the copying errors are checked and repaired at three levels.
The DNA Helix01:07

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...
DNA as a Genetic Template02:05

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...

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Updated: Jul 9, 2026

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在人类c-kit基因基因组件中,假定DNA四重复形成.

Sarah Rankin1, Anthony P Reszka, Julian Huppert

  • 1Cancer Research UK Biomolecular Structure Group, The School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX, UK.

Journal of the American Chemical Society
|July 28, 2005
PubMed
概括

在c-kit瘤基因促进体中的特定DNA序列形成了一个稳定的四重复结构. 这一发现表明基因组中存在的这种结构较少,并提供了潜在的新癌症治疗点.

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科学领域:

  • 基因组学就是基因组学.
  • 结构生物学 结构生物学
  • 在瘤学瘤学.

背景情况:

  • 该c-kit瘤基因在各种癌症中发挥作用.
  • DNA可以在双螺旋之外形成复杂的结构,例如四重复.
  • 基因组四重复的流行程度尚未完全理解.

研究的目的:

  • 来自c-kit瘤基因促进体的特定DNA序列的结构性质的研究.
  • 为了确定这个序列在生理条件下是否形成四重复结构.
  • 评估序列变化对四重复形成的影响.

主要方法:

  • 核磁共振 (NMR) 光谱学是指核磁共振 (NMR) 的光谱学.
  • 循环二元化 (CD) 光谱学 循环二元化 (CD) 光谱学
  • 化温度 (Tm) 的测量

主要成果:

  • 的DNA序列d ((AGGGAGGGCGCTGGGAGGAGGG) 形成一个稳定的四链四重复结构.
  • 这种四重复形成发生在生理条件下.
  • 瓜宁通道之间的轻微序列修改阻止了四重复形成.

结论:

  • 该c-kit促销器包含一个能够形成G-四重复结构的序列.
  • 基因组四重复形成可能比以前假设的不常见.
  • 该c-kit四重体代表了对c-kit驱动的癌症的潜在新型治疗标.