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RNA Structure

RNA Structure

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...

RNA Interference

RNA Interference

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...

RNA Interference

RNA Interference

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...

siRNA - Small Interfering RNAs

siRNA - Small Interfering RNAs

Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...

RNA Structure

RNA Structure

The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. 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) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...

Nucleic Acid Structure

Nucleic Acid Structure

The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...

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Updated: Jul 5, 2026

Nanomanipulation of Single RNA Molecules by Optical Tweezers

Nanomanipulation of Single RNA Molecules by Optical Tweezers

Published on: August 20, 2014

RNAテンプレート半導体ナノ結晶

Nan Ma¹, Chad J Dooley, Shana O Kelley

¹Eugene F. Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA.

Journal of the American Chemical Society

|September 28, 2006

まとめ

この要約は機械生成です。

移転RNA (tRNA) テンプレッティングにより,硫化カドミウム (CdS) 半導体ナノ結晶の正確な合成が可能になります. tRNA構造を制御することで,ナノスケールでナノ結晶の性質を設計することができます.

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Single-Molecule Surface-Enhanced Raman Scattering Measurements Enabled by Plasmonic DNA Origami Nanoantennas

Single-Molecule Surface-Enhanced Raman Scattering Measurements Enabled by Plasmonic DNA Origami Nanoantennas

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Last Updated: Jul 5, 2026

Nanomanipulation of Single RNA Molecules by Optical Tweezers

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Published on: August 20, 2014

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科学分野:

マテリアルサイエンス材料科学
バイオテクノロジーバイオテクノロジー
ナノテクノロジーナノテクノロジー

背景:

バイオ分子テンプレートは,ナノ材料合成のためのユニークな構造制御を提供します.
トランスファーRNA (tRNA) は,定義された3次元構造を持ち,脚架として適しています.
カドミウム硫化物 (CdS) のような半導体ナノ結晶は,多様なアプリケーションを持っています.

研究の目的:

CdS半導体ナノ結晶合成のテンプレートとしてtRNAの使用を調査する.
結果となるナノ結晶の性質にtRNA構造がどのように影響するかを探求する.
半導体材料のエンジニアリングにおけるバイオ分子の可能性を実証する.

主な方法:

生物分子テンプレートとしてtRNAを使用したCdS半導体ナノ結晶の水性合成.
構造的効果を観察するために,折りたたまれたおよび構造化されていないtRNA変種 (変異経由) を利用する.
合成されたナノクリスタル構造と性質の特徴.

主要な成果:

折りたたまれた3次元tRNAを使用すると,単一のCdSナノ結晶製品が得られました.
構造化されていないtRNAを使用する際に,CdSナノ結晶製品の範囲が観察されました.
ナノ結晶の構造と特性は,テンプレート tRNA の構造によって直接調節されます.

結論:

バイオ分子,特にtRNAは,半導体ナノ結晶構造を設計するために体系的に使用することができます.
ナノ結晶の寸法と性質の正確な制御は,バイオ分子テンプレートによって達成可能である.
ナノ構造の寸法とバイオ分子構造の相乗効果は,ナノスケールの材料の特性調整を可能にします.