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相关概念视频

Bacterial Transcription01:53

Bacterial Transcription

27.8K
RNA polymerase (RNAP) carries out DNA-dependent RNA synthesis in both bacteria and eukaryotes. Bacteria do not have a membrane-bound nucleus. So, transcription and translation occur simultaneously, on the same DNA template.
Transcription can be divided into three main stages, each involving distinct DNA sequences to guide the polymerase. These are:
27.8K
Master Transcription Regulators02:23

Master Transcription Regulators

6.8K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
6.8K
Transcription01:10

Transcription

146.2K
Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
146.2K
Transcription Initiation01:47

Transcription Initiation

16.1K
Initiation is the first step of transcription in eukaryotes. Prokaryotic RNA Polymerase (RNAP) can bind to the template DNA and start transcribing. On the other hand, transcription in eukaryotes requires additional proteins, called transcription factors, to first bind to the promoter region in the DNA template. This binding helps recruit the specific RNAP that can assemble on the DNA and start transcription.
The promoters and enhancers and their accessory proteins allow tight regulation of...
16.1K
Combinatorial Gene Control02:33

Combinatorial Gene Control

8.3K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
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Cooperative Binding of Transcription Regulators02:13

Cooperative Binding of Transcription Regulators

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相关实验视频

Updated: May 23, 2025

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

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量子启发的逻辑用于高级转录编程.

Prasaad T Milner1, Dowan Kim1, Corey J Wilson1

  • 1Georgia Institute of Technology, School of Chemical & Biomolecular Engineering, 311 Ferst Drive, Atlanta, GA 30332-0100, United States.

Nucleic acids research
|May 21, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了用于增强生物决策的压缩基因电路. 这些新的合成生物学工具能够用更少的输入进行复杂的逻辑操作,扩大生物计算能力.

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Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins
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Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins

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相关实验视频

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Rapid Development of Cell State Identification Circuits with Poly-Transfection
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Rapid Development of Cell State Identification Circuits with Poly-Transfection

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Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins
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科学领域:

  • 合成生物学 合成生物学
  • 生物计算是一种生物计算.
  • 基因工程是一种基因工程.

背景情况:

  • 智能生物系统依赖于可扩展的决策,遗传记忆和通信.
  • 当前的遗传电路通常需要多个输入来进行复杂的逻辑操作,从而增加代谢负担.
  • 需要更高效的遗传电路设计,尽量减少代谢负载,同时增加计算复杂性.

研究的目的:

  • 开发一种新的平台技术,用于构建具有多输出基因控制的基因电路,使用更少的输入.
  • 在量子计算的启发下,为复杂的逻辑运算设计合成双向促进器和转录因子.
  • 通过压缩和可扩展的多输入/输出逻辑操作,扩大转录编程的生物计算能力.

主要方法:

  • 由合成转录因子调节的工程合成双向促进剂.
  • 构建了1输入,2输出生物逻辑门 (QUBIT和PAULI-X) 作为压缩的遗传电路.
  • 有层次的门可以创建复杂的量子启发的逻辑操作 (FEYNMAN,TOFFOLI) 和2输入,4输出操作.
  • 开发了一种基于重组酶的内存操作,用于在逻辑门之间重新映射现场真实表.

主要成果:

  • 成功设计了能够进行1输入,2输出逻辑操作的压缩基因电路 (生物QUBIT和PAULI-X门).
  • 演示了这些门的分层,以实现更复杂的量子启发逻辑运算.
  • 展示了一个2输入,4输出运算,利用完整的输入排列空间.
  • 开发了一个基于重组酶的功能性记忆系统,以动态地改变逻辑门的行为.

结论:

  • 介绍了一套通用的合成生物学工具包,用于先进的生物计算.
  • 开发的压缩基因电路显著扩大了转录编程的逻辑能力.
  • 这项技术为更复杂,更高代谢效率的生物决策系统提供了途径.