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関連する概念動画

Switching of BJT01:22

Switching of BJT

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Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are...
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Synthetic Biology02:55

Synthetic Biology

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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.
Golden rice
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Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein

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Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
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Conservation of Protein Domains Over Different Proteins02:26

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Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
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Opioid Analgesics: Synthetic and Semisynthetic Opioids

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Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...
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Updated: Jan 25, 2026

Use of Label-free Optical Biosensors to Detect Modulation of Potassium Channels by G-protein Coupled Receptors
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合成スイッチモジュールに基づく一般化可能なタンパク質バイオセンサ

Zhong Guo1, Wayne A Johnston1, Jason Whitfield2

  • 1CSIRO-QUT Synthetic Biology alliance, Centre for Tropical Crops and Biocommodities, School of Earth, Environmental and Biological Sciences , Queensland University of Technology , Brisbane , QLD 4001 , Australia.

Journal of the American Chemical Society
|May 11, 2019
PubMed
まとめ

科学者は合成生物学のために 多用途のタンパク質スイッチを設計しました これらのペプチド制御システムは 生物学的機能の正確な調節と 臨床バイオマーカーの正確な検出を可能にし バイオセンシングの応用のための新しい道を開きます

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関連する実験動画

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科学分野:

  • 合成生物学
  • タンパク質工学
  • バイオセンシング

背景:

  • タンパク質のスイッチは 生物学的情報処理に不可欠です
  • エンジニアリングされたアロステリックスイッチは,合成システムにとって望ましいツールである.

研究 の 目的:

  • ペプチドで動作する合成アロステリックONスイッチの作成のための一般的な戦略を開発する.
  • 構成的に活性な酵素を制御可能なスイッチに変換することを実証する.

主な方法:

  • 合理的に選択された酵素部位にカルモジュリン領域を挿入する.
  • リガンド媒介の近接によってスイッチの活性を調節する エンジニアリング活性化ペプチド.
  • 生物学的流体内の分析物質の検出のために作成されたバイオセンサを使用します.

主要な成果:

  • 酵素 (EGFP,グルコース脱水酵素,ナノルシフェラーゼ,脱水葉酸還元酵素) を最小限の最適化でペプチドスイッチに変換した.
  • ダイナミックな反応は1. 8倍から200倍以上です.
  • プラズマ,唾液,尿における臨床薬剤およびバイオマーカーの正確な測定を証明した.

結論:

  • 提示された戦略は,効率的なタンパク質スイッチを構築するための一般化可能な方法を提供します.
  • これらのスイッチは,分析剤の結合を望ましい生化学活動に変換することを可能にします.
  • このアプローチは複雑な人工信号と代謝回路の作成を容易にする.