3Dタンパク質結晶の合理的な化学設計
Pamela A Sontz1, Jake B Bailey1, Sunhyung Ahn1
1Department of Chemistry and Biochemistry, University of California, San Diego , 9500 Gilman Drive, La Jolla, California 92093, United States.
Journal of the American Chemical Society
|August 26, 2015
まとめ
研究者はタンパク質ノードと金属有機結合剤を用いて 新しい結晶構造を作り出しました この自己組み立て構造は この種の最初のもので 先進的な材料の 精密な格子形成を証明しています
科学分野:
- 材料科学
- バイオテクノロジー
- ナノテクノロジー
背景:
- タンパク質ベースの材料は 独特の構造特性を備えています
- メタル・オーガニック・フレームワーク (MOF) は,その多孔性と調節可能な構造で知られています.
- タンパク質とMOFを組み合わせると 新種のハイブリッド材料が生成されます
研究 の 目的:
- タンパク質ノードと金属-有機結合体を使って 3次元,多孔,結晶の枠組みを構築する.
- フェリチンタンパク質を設計し 制御された自己組織化のための 特定の調整部位を設計する
- タンパク質と金属と有機の結晶構造の形成を証明する
主な方法:
- 鉄の貯蔵酵素であるフェリチンは 毛穴にZnの調整部位を配置しています
- ダイナミックな光散乱と結晶学的な研究を使用して自己組み立てプロセスを分析します.
- 水素酸の機能群を伴うディトピックリンカーを用いて結晶形成を誘導する.
主要な成果:
- Zn-フェリチンは,体中心の立方体 (bcc型) の結晶格子に組み立てられ,成功しました.
- メタル・オーガニック・リンカー・ディレクテッドの相互作用によって強固な自己組み立てが実証されている.
- タンパク質,金属,リンクコンポーネントに依存する三元構造の形成を確立した.
結論:
- この研究は,最初の完全構成要素依存の三元タンパク質-金属-有機結晶構造を提示しています.
- エンジニアリングされたフェリチンとリンクシステムにより,結晶構造の形成を正確に制御できます.
- このアプローチは,高度なタンパク質ベースのナノ材料を設計するための道を開きます.
関連する概念動画
01:13Protein Organization
Overview
01:13Protein Organization
Overview
01:24Protein Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.
02:21Globular and Fibrous Proteins
Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
02:15Protein and Protein Structures
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme can...
A protein's shape is critical to its function. For example, an enzyme can...
01:24Protein Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.