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関連する概念動画

Signal Sequences and Sorting Receptors01:41

Signal Sequences and Sorting Receptors

Signal sequences are short amino acid sequences that guide newly synthesized proteins to their proper location within the cell. Classical signal sequences are fifteen to sixty amino acids long and present at the N-terminus of a polypeptide chain. Each signal sequence has a conserved segment of basic residues towards their N terminus, a hydrophobic core, and a C-terminus rich in polar residues. The C-terminus also contains a signal cleavage site and features a -3 -1 sequence motif. The -3-1...
Protein Complex Assembly02:41

Protein Complex Assembly

Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Nucleic Acid Structure01:25

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...
Next-generation Sequencing03:00

Next-generation Sequencing

The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Nucleic Acids02:43

Nucleic Acids

Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...
Nucleic acids02:43

Nucleic acids

Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes, the...

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関連する実験動画

Updated: Jun 22, 2026

Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures
08:15

Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures

Published on: June 26, 2020

自己組み立て配列適応ペプチド核酸の自己組み立て配列適応ペプチド核酸

Yasuyuki Ura1, John M Beierle, Luke J Leman

  • 1Department of Chemistry and Skaggs Institute for Chemical Biology, Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.

Science (New York, N.Y.)
|June 13, 2009
PubMed
まとめ
この要約は機械生成です。

研究者らは,テンプレートに応じて自己組み立てを行い,その配列を適応させる新しい合成ポリマーであるチオエステルペプチド核酸 (tPNA) を開発した. この画期的な発見により,新しいバイオマテリアルと触媒構造のための酵素なしの選択圧力が可能になりました.

さらに関連する動画

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
09:04

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

Published on: September 21, 2017

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

関連する実験動画

Last Updated: Jun 22, 2026

Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures
08:15

Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures

Published on: June 26, 2020

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
09:04

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

Published on: September 21, 2017

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
09:34

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly

Published on: February 6, 2020

科学分野:

  • 合成生物学 合成生物学とは
  • バイオケミストリー バイオケミストリー
  • ポリマー化学 ポリマー化学

背景:

  • 以前の合成情報ポリマーには,酵素なしで選択圧力の反応能力が欠けていました.
  • 新しい核酸アナログの開発は,バイオ材料と合成システムの進歩に不可欠です.

研究 の 目的:

  • 合成ポリマー,チオエステルペプチド核酸 (tPNAs) の新種を導入し,自己組み立てとダイナミックシーケンスの修正を可能にします.
  • 酵素フリー条件下でtPNAの選択と適応を経験する能力を実証する.

主な方法:

  • オリゴ-二ペプチドの背骨に核塩基単体の可逆的共性アンカリングを通じたtPNAの自己組み立て.
  • ワトソン・クリックの相互作用による特定のtPNAの自己ペアリングおよびRNAおよびDNAとのクロスペアリングの実証.
  • 溶液中のテンプレート分子の変化に反応するダイナミックシーケンスの修正を調査する.

主要な成果:

  • tPNAは効率的に自己アセンブルし,ダイナミックシーケンスの修飾能力を発揮します.
  • tPNAは,他のtPNAとの特定の補完的なペアリングを示す.
  • tPNAは,ワトソン・クリックの塩基配列規則に従って,天然の核酸 (RNAとDNA) と交叉配列を示す.
  • システムは,酵素のない条件下で効果的に動作し,選択圧力を可能にします.

結論:

  • tPNAは,塩基配列をペプチドのような機能と組み合わせた合成情報ポリマーの重要な進歩を表しています.
  • tPNAのダイナミックで適応性の高い性質は,新しい触媒構造とバイオマテリアルの設計の可能性を広げています.
  • 潜在的応用には,自己修復と適応を可能にするシステムがあり,生物学的プロセスを模倣しています.