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関連する概念動画

From DNA to Protein03:06

From DNA to Protein

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The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
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Combinatorial Gene Control02:33

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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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tRNA Activation02:26

tRNA Activation

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Aminoacyl-tRNA synthetases are present in both eukaryotes and bacteria. Though eukaryotes have 20 different aminoacyl-tRNA synthetases to couple to 20 amino acids, many bacteria do not have genes for all of these aminoacyl-tRNA synthetases. Despite this, they still use all 20 amino acids to synthesize their proteins. For instance, some bacteria do not have the gene encoding the enzyme that couples glutamine with its partner tRNA. In these organisms, one enzyme adds glutamic acid to all of the...
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Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
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The Central Dogma01:25

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Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
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Protein WISDOM: A Workbench for In silico De novo Design of BioMolecules
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ARCADE: ファンデーションモデルからアクティベーションエンジニアリングによる制御可能なコドン設計

Jiayi Li1, Litian Liang1, Shiyi Du1

  • 1Ray and Stephanie Lane Computational Biology Department, School of Computer Science, Carnegie Mellon University, Pittsburgh, PA, 15217, US.

bioRxiv : the preprint server for biology
|September 2, 2025
PubMed
まとめ
この要約は機械生成です。

ARCADEは,アクティベーションエンジニアリングと事前に訓練されたゲノムモデルを使用して,mRNAコドン配列設計に対する柔軟な制御を提供します. このアプローチは,mRNAワクチンや遺伝子編集療法などの応用のために プログラム可能な生物学的配列設計を強化します.

キーワード:
アクティベーションエンジニアリング制御可能なシーケンス生成ゲノミクスの基礎モデル基礎モデルの研修後mRNAデザイン

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Residue-specific Incorporation of Noncanonical Amino Acids into Model Proteins Using an Escherichia coli Cell-free Transcription-translation System
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Identifying Amino Acid Overproducers Using Rare-Codon-Rich Markers
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Residue-specific Incorporation of Noncanonical Amino Acids into Model Proteins Using an Escherichia coli Cell-free Transcription-translation System
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科学分野:

  • バイオ情報学
  • コンピュータ生物学
  • 合成生物学

背景:

  • コドン配列の設計はmRNA療法と遺伝子編集に不可欠です.
  • 現在の方法は,多様な設計目的のために必要な柔軟性と制御が欠けている.

研究 の 目的:

  • 柔軟で制御可能なコドン配列生成のための新しい枠組みであるARCADEを導入する.
  • 強化された配列設計のための連続生物学的メトリックにアクティベーションエンジニアリングを拡張する.

主な方法:

  • ARCADEは,事前に訓練されたゲノム基盤モデルのアクティベーションエンジニアリングを使用しています.
  • モデルのアクティベーションスペースに生物学的に有意義な意味学的な方向ベクトルを使用します.
  • フレームワークはコドン適応指数,最小自由エネルギー,再訓練なしにGC含有量などの連続的な性質を調節します.

主要な成果:

  • ARCADEは,既存の方法と比較して優れた性能と著しく高い柔軟性を示しています.
  • このアプローチにより,複数の連続した生物学的メトリックを正確に制御できます.

結論:

  • ARCADEは プログラム可能な生物学的配列設計における 重要な進歩を表しています
  • この枠組みは,新しいmRNAワクチンや遺伝子編集療法の開発を加速させる可能性を秘めています.