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関連する概念動画

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...
Assembly of Cytoskeletal Filaments01:18

Assembly of Cytoskeletal Filaments

Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
Protein Folding01:25

Protein Folding

Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Folding01:22

Protein Folding

Overview
Assembly of Signaling Complexes01:30

Assembly of Signaling Complexes

Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...

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Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
07:26

Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides

Published on: November 21, 2013

巻き巻きペプチドモジュールから自己組み立てのケージ.

Jordan M Fletcher1, Robert L Harniman, Frederick R H Barnes

  • 1School of Chemistry, Cantock's Close, University of Bristol, Bristol BS8 1TS, UK.

Science (New York, N.Y.)
|April 13, 2013
PubMed
まとめ
この要約は機械生成です。

設計されたペプチドは,100ナノメートルの球体に自己組み立てられ,生物のコンパートメントを模倣します. この画期的な発見は,薬物投与システムと人工細胞の開発に新たな道を開く.

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関連する実験動画

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Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
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Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides

Published on: November 21, 2013

Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly
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科学分野:

  • バイオケミストリー バイオケミストリー
  • マテリアルサイエンス 材料科学
  • 合成生物学 合成生物学とは

背景:

  • 生物学的なコンパートメントを模倣することは,自己組み立てを理解するために不可欠です.
  • 薬剤投与やプロトセルのための新しい材料を開発するには,構造の正確な制御が必要です.

研究 の 目的:

  • 生物学的なコンパートメントを模倣するペプチドベースの構造を設計し,合成する.
  • 設計されたペプチドが定義された球形の構造に自己組み立てられることを探求する.

主な方法:

  • 短く設計されたペプチドを用いて,非共性ヘテロディメアおよびホモトリメアコイル・コイル・バンドルを作成した.
  • ペプチド束を結合することによって補完的なハブを設計した.
  • 混合ハブは,六角形のネットワークに自己組み立てを誘導し,その後閉じたケージにします.

主要な成果:

  • およそ100ナノメートルの直径のユニメラー球体を成功裏に形成しました.
  • 閉じられたケージに自己組み立てられる六角形のネットワークの形成を実証した.
  • 粒子の化学,自己組み立て,可逆性,およびサイズに対する正確な制御を達成しました.

結論:

  • 短く設計されたペプチドは,安定したユニラメラー球体へと自己組み立てることができる.
  • このペプチドベースの設計戦略は,人工コンパートメントを作成するための汎用的なプラットフォームを提供します.
  • 開発された方法は,薬物投与および合成生物学における応用のための大きな可能性を秘めています.