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Translesion DNA Polymerases

Translesion DNA Polymerases

Translesion (TLS) polymerases rescue stalled DNA polymerases at sites of damaged bases by replacing the replicative polymerase and installing a nucleotide across the damaged site. Doing so, TLS allows additional time for the cell to repair the damage before resuming regular DNA replication.
TLS polymerases are found in all three domains of life - archaea, bacteria, and eukaryotes. Of the different classes of TLS polymerases, members of the Y family are fitted with specialized structures that...

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相关实验视频

Updated: Jun 18, 2026

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

基于温度响应的DNA链位移的多模式自适应逻辑门.

Zhekun Chen¹, Chun Xie¹, Kuiting Chen¹

¹Key Laboratory of Image Information Processing and Intelligent Control of Education Ministry of China, School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan 430074, China. lqpan@mail.hust.edu.cn.

|January 22, 2024

概括

科学家们开发了一种新的DNA纳米系统,可以根据温度变化执行多种功能. 这种自适应逻辑门技术可以实现多种应用,超越了简单的开启-关闭开关,用于先进的纳米技术.

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Design and Synthesis of a Reconfigurable DNA Accordion Rack

Design and Synthesis of a Reconfigurable DNA Accordion Rack

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DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

Published on: December 29, 2021

相关实验视频

Last Updated: Jun 18, 2026

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation

Published on: December 29, 2021

科学领域:

生物技术是生物技术.
纳米技术纳米技术
合成生物学合成生物学

背景情况:

生物通过改变生物状态来适应环境变化,例如温度波动.
目前的人工温度响应DNA纳米系统仅限于简单的ON-OFF开关,阻碍了复杂的功能.
开发多功能纳米系统对于生物技术和纳米技术的先进应用至关重要.

研究的目的:

提出使用温度响应DNA链位移创建多模DNA纳米系统的总体策略.
通过修改发针和入侵链序列来证明对DNA链位移的控制.
设计能够在特定温度下执行各种布尔函数的自适应逻辑门.

主要方法:

用于纳米系统构建的温度响应的DNA链位移反应.
调整基质发针和入侵链序列,以控制DNA链位移.
在不同的温度下 (10°C,35°C,46°C) 展示布尔函数 (XOR,OR,AND) 的制造逻辑门.

主要成果:

成功设计和制造多模DNA纳米系统.
使用DNA链位移证明了温度依赖的布尔逻辑运算.
创建了一个自适应逻辑门,在分别10°C,35°C和46°C时显示XOR,OR和AND函数,在55°C时具有重置能力.

结论:

开发的战略使得多功能,温度敏感的DNA纳米系统的构建成为可能.
这些先进的纳米系统为诸如多阶段药物输送和控制的纳米结构组装等应用提供了潜力.
这项工作推进了基于DNA的可编程纳米设备的领域,用于复杂的热控制.