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関連する概念動画

Eukaryotic RNA Polymerases00:58

Eukaryotic RNA Polymerases

26.8K
RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
26.8K
Movement Joints in Buildings01:27

Movement Joints in Buildings

340
Movement joints in buildings are essential design elements that accommodate inevitable motions caused by various factors such as temperature changes, moisture content variations, and structural deflections. These motions, if not considered in design and construction, can lead to unsightly or dangerous damage. Movement joints are incorporated in different forms to manage these stresses and allow materials to move without causing distress.
The simplest type of movement joints, working joints, are...
340
Types of Building Stone01:30

Types of Building Stone

421
Building stones, essential materials for construction, are extracted from natural rock deposits and processed into specific forms and dimensions suitable for various building applications. These stones are broadly classified into three types based on their geological formation: igneous, sedimentary, and metamorphic.
Igneous rocks are formed from the solidification of magma or lava. An example is granite, known for its durability and resistance to weathering, making it ideal for parts of...
421
RNA Stability01:53

RNA Stability

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Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
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RNA Interference01:23

RNA Interference

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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
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RNA Structure01:23

RNA Structure

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Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
78.9K

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Updated: Jan 26, 2026

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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RNAを使ってプログラム可能なパズルを作ります.

Arkadiusz Chworos1, Isil Severcan, Alexey Y Koyfman

  • 1Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106-9510, USA.

Science (New York, N.Y.)
|December 18, 2004
PubMed
まとめ
この要約は機械生成です。

研究者らは,精密な分子自己組み立てのために,テクトスクエアと呼ばれる人工RNAビルディングブロックを設計した. このブレークスルーにより,プログラム可能なパターンと寸法を持つ複雑なナノスケール繊維の作成が可能です.

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Hierarchical and Programmable One-Pot Oligosaccharide Synthesis
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The Use of the Puzzle Box as a Means of Assessing the Efficacy of Environmental Enrichment
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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

Published on: December 29, 2021

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Hierarchical and Programmable One-Pot Oligosaccharide Synthesis
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The Use of the Puzzle Box as a Means of Assessing the Efficacy of Environmental Enrichment
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科学分野:

  • 超分子化学 超分子化学
  • RNA ナノテクノロジー ナノテクノロジー
  • 材料科学 材料科学とは

背景:

  • 自己組み立て可能な分子構成ブロックの設計は,ナノスケールでの物質の制御に不可欠です.
  • 現在の方法は,組み立てられた材料の配置と構造の正確な制御を達成する上で課題に直面しています.

研究 の 目的:

  • 予測可能な自己組み立てのための多用途,人工RNAのビルディングブロックを開発する.
  • ナノ構造体の幾何学,トポロジー,パターン形成に対するアルゴリズムの制御を実証する.

主な方法:

  • 3次元RNA構造の設計と予測.
  • プログラミングRNAの構成要素 (テクトスクエア) は,特定の幾何学とトポロジーの特徴を持つ.
  • アルゴリズムによる自己組み立てにより,複雑なナノスケールの織物を生成します.

主要な成果:

  • 予測可能な自己組み立てが可能な人工RNAテクトスクエアを成功裏に設計しました.
  • RNAナノ構造物の幾何学,トポロジー,方向性,およびアドレッサビリティに対するプログラム可能な制御が実証されました.
  • 既定の周期的および非周期的パターンを備えた複雑なナノスケールの織物を生成しました.

結論:

  • 小さなRNA構造モチーフは,モジュール性を強調して,大きな分子構造のトポロジーを決定することができます.
  • 完全にアドレッザ可能なRNAベースの材料を合成することができます.
  • この研究は,RNA分子の大集団の自己組織化に関する洞察を提供します.