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相关概念视频

Next-generation Sequencing03:00

Next-generation Sequencing

The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Southern Blot02:57

Southern Blot

Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Proofreading01:31

Proofreading

Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore,  it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
Errors During Replication are Corrected by the DNA Polymerase Enzyme

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相关实验视频

Updated: May 31, 2026

Residue-Specific Exchange of Proline by Proline Analogs in Fluorescent Proteins: How "Molecular Surgery" of the Backbone Affects Folding and Stability
10:31

Residue-Specific Exchange of Proline by Proline Analogs in Fluorescent Proteins: How "Molecular Surgery" of the Backbone Affects Folding and Stability

Published on: February 3, 2022

在普罗林结合的进步.

Shiying Shang1, Zhongping Tan, Suwei Dong

  • 1Laboratory for Bioorganic Chemistry, Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10065, USA.

Journal of the American Chemical Society
|June 24, 2011
PubMed
概括

原生化学结合 (NCL) 能够在实验室中合成蛋白质. 一种结合NCL和无金属脱保护 (MFD) 的新方法现在允许在N端蛋白质上结合,克服了以往与プロ林二 Ester的限制.

科学领域:

  • 生物化学 生物化学
  • 化学生物学 化学生物学
  • 合成生物学 合成生物学

背景情况:

  • 原生化学结合 (NCL) 是一种用于和蛋白质合成的强大技术.
  • 在C端的普罗林残留物的结合仍然是具有挑战性的,因为普罗林硫的反应性很差.

研究的目的:

  • 开发一种新的策略,在N-终端蛋白位点进行高效的蛋白质结合.
  • 在处理烯残留物时克服传统NCL方法的局限性.

主要方法:

  • 这项研究结合了原生化学联结 (NCL) 和无金属脱保护 (MFD).
  • 这种方法是专门设计的,以解决与proline thioesters相关的反应性问题.

主要成果:

  • 证明了在N端蛋白位点结的可行性.
  • 成功地实现了结合,尽管氨酸二氧化的反应性固有的挑战.

结论:

  • 结合的NCL和MFD策略提供了一种可行的蛋白质合成方法,涉及N-终端.
  • 这一进步扩大了NCL用于构建复杂蛋白质分子的实用性.

相关实验视频

Last Updated: May 31, 2026

Residue-Specific Exchange of Proline by Proline Analogs in Fluorescent Proteins: How "Molecular Surgery" of the Backbone Affects Folding and Stability
10:31

Residue-Specific Exchange of Proline by Proline Analogs in Fluorescent Proteins: How "Molecular Surgery" of the Backbone Affects Folding and Stability

Published on: February 3, 2022