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Riboswitches01:56

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Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
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Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
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Synthetic Biology02:55

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Synthetic biology is an interdisciplinary science that involves using principles from disciplines such as engineering, molecular biology, cell biology, and systems biology. It involves remodeling existing organisms from nature or constructing completely new synthetic organisms for applications such as protein or enzyme production, bioremediation, value-added macromolecule production, and the addition of desirable traits to crops, to name a few.
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In psychology, concepts can be divided into two categories: natural and artificial. Natural concepts are formed through direct or indirect experiences. For example, consider the concept of snow. If you live in a place with regular snowfall, such as Essex Junction, Vermont, you know snow through direct experiences. You’ve seen it fall, touched it, shoveled it, and played in it. You recognize its texture, appearance, and even its smell. In contrast, if you live on an island like Saint...
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Histamine H2 receptors, which are intricately located on the basolateral membrane of parietal cells, play a crucial role in modulating gastric acid secretion. When released from enterochromaffin-like cells, histamine engages H2 receptors, initiating the cyclic AMP (cAMP) pathway. In this pathway, adenylyl cyclase converts ATP into cAMP, elevating intracellular cAMP levels. The activation of protein kinase A follows, stimulating the proton pump. This stimulation prompts the secretion of hydrogen...
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Using Synthetic Biology to Engineer Living Cells That Interface with Programmable Materials
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ヒスタミン反応性合成リボスイッチを用いたプログラム可能な人工細胞

Mohammed Dwidar1, Yusuke Seike2, Shungo Kobori1

  • 1Nucleic Acid Chemistry and Engineering Unit, Okinawa Institute of Science and Technology Graduate University , Onna , Okinawa 904-0495 , Japan.

Journal of the American Chemical Society
|June 27, 2019
PubMed
まとめ
この要約は機械生成です。

研究者は合成RNAスイッチ (リボスイッチ) を開発し,人工細胞がヒスタミンなどの特定の分子に感知して反応できるようにしました. このイノベーションにより 制御された機能が生まれ 合成生物学の応用が広がります

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科学分野:

  • 合成生物学
  • 生物化学
  • 分子工学

背景:

  • 人工細胞は細胞のプロセスや 合成生物学を研究するためのプラットフォームです
  • 人工細胞とダイナミックな化学環境を インタフェースにするのは大きな課題です

研究 の 目的:

  • 人工細胞の 分子感知能力を拡張する
  • 人工細胞機能を制御するためのRNAベースの遺伝子スイッチ (リボスイッチ) を開発する.

主な方法:

  • ヒスタミンに対する高親和性と特異性を持つRNAアプタマーを分離した.
  • ヒスタミン反応リボスイッチを設計・製造した.
  • 合成細胞にリボスイッチを組み込み 封じ込められた分子を制御し キルスイッチを実行します

主要な成果:

  • ヒスタミンで活性化された 頑丈なリボスイッチを 設計しました
  • リボスイッチを用いて人工細胞から小分子を制御的に放出することを実証した.
  • リボスイッチで制御された人工細胞に 自己破壊的なキルスイッチを導入した

結論:

  • 合成リボスイッチは,人工細胞の行動と外部の化学信号を結びつけるための多用途なインターフェースとして機能します.
  • このアプローチは,合成生物学における人工細胞のプログラム性と適用性を高めます.