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Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
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One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
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使用外核酶进行aptamer特性,工程和传感.

Obtin Alkhamis1, Juan Canoura1, Phuong T Ly1

  • 1Department of Chemistry, North Carolina State University, 2620 Yarbrough Dr., Raleigh, North Carolina 27695, United States.

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|June 14, 2023
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概括
此摘要是机器生成的。

酶辅助方法简化了阿普坦体的工程和表征. 核酶增强了aptamer传感器,使得无标签的检测和高通量选可用于各种应用.

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科学领域:

  • 生物技术是生物技术.
  • 分子生物学分子生物学
  • 分析化学 分析化学

背景情况:

  • 胺是基于核酸的生物识别元素,具有诊断和监测的潜力.
  • 目前面临的挑战包括有限的灵敏度,复杂的表征和高成本的aptamer开发.
  • 核酶酶为克服这些局限性提供了一个有希望的途径.

研究的目的:

  • 开发新的酶学方法,用于aptamer工程和表征.
  • 为了提高灵敏度和简化基于aptamer的传感器的开发.
  • 为了创建高吞吐量方法的aptamer选和亲和度的确定.

主要方法:

  • 在阿巴胺 - 配体结合时利用了外核酶消化抑制.
  • 通过单阶段的外核酶切割开发了结构切换的阿巴.
  • 建立了一个无标签的检测平台,使用直接的aptamer选择输出.
  • 用于高通量aptamer亲和力和特异性特征的外核酶.

主要成果:

  • 通过单步切割简化了阿普坦体工程.
  • 在生物样本中实现了超低背景的纳米级分析剂检测.
  • 启用了使用分子信标的多重检测.
  • 促进了综合性阿普坦体分析和提升的阿普坦体的识别.
  • 证明了对aptamer候选物和aptamer-ligand对进行高通量选.

结论:

  • 酶技术显著简化了aptamer表征和传感器开发.
  • 新的方法解决了aptamer工程和应用中的关键挑战.
  • 快速识别最佳的aptamers的潜力,用于特定的应用程序与自动化.