関連する実験動画
Updated: Aug 12, 2026

12:24
Helical Organization of Blood Coagulation Factor VIII on Lipid Nanotubes
Published on: June 3, 2014
まとめ
牛肝ロダネス (Bovine liver rhodanese) は,構造的に類似した半分のタンパク質で,Cys-247.7経由で硫黄の転送を容易にする. 主要な残留物Arg-186とLys-249は,この酵素処理の過程で基板結合に不可欠なようです.
科学分野:
- バイオケミストリー バイオケミストリー
- 酵素学 酵素学とは
- タンパク質の構造 タンパク質の構造
背景:
- 牛肝ロダネスは,硫黄の代謝に関与する酵素です.
- 酵素は293アミノ酸からなる単一のポリペプチド鎖で構成されています.
研究 の 目的:
- 牛肝ロダネスの三次構造と触媒機構を調査する.
- 基板結合と硫黄移転に関与する重要なアミノ酸残基を特定する.
主な方法:
- タンパク質の三次構造の分析.
- 硫黄結合部位の特定 硫黄結合部位の特定 硫黄結合部位の特定 硫黄結合部位の特定
- 基板結合相互作用を検知する.
主要な成果:
- ローダネス分子の2つの半分は,限られた配列ホモロジーにもかかわらず,類似の三次構造を示しています.
- 触媒硫黄原子は,パースルフィード結合でCys-247に共結的に結合している.
- 証拠によると,Arg-186とLys-249は基質の認識と結合に関与している.
結論:
- 牛肝ロダネスは,その酵素的機能を促進するユニークな構造組織を有しています.
- Cys-247は,カタリシス中の硫黄原子結合の重要な残留物です.
- 特定のアルギニンおよびライシン残基は,酵素の基板特異性において役割を果たします.
関連する概念動画
Protein Organization
Overview
Protein Folding
Overview
Protein and Protein Structure
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...
Protein Organization
Overview
Protein 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.
Protein 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.

