ナトリウム結合トランスポーターの分子秘密を解明する
Harini Krishnamurthy1, Chayne L Piscitelli, Eric Gouaux
1Vollum Institute, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Oregon 97239, USA.
Nature
|May 22, 2009
まとめ
ナトリウムイオングラデントは二次トランスポーターに電力を供給し,分子を細胞に移動させます. 最近の結晶構造は,様々なナトリウム結合トランスポーターにわたって保存されたメカニズムを明らかにし,膜輸送に関する私たちの理解を前進させています.
科学分野:
- メンブラン生物学 メンブラン生物学
- バイオケミストリー バイオケミストリー
- 構造生物学 構造生物学とは
背景:
- 膜横断のナトリウムイオン・グラデーションは,二次トランスポーターにとって重要なエネルギー源である.
- これらのトランスポーターは,細胞膜に溶液の転移を促進し,様々な生理学的プロセスや疾患に関与しています.
- 彼らの機能を理解することは,治療目標の特定に不可欠です.
研究 の 目的:
- 細胞膜を横断するナトリウム結合溶液輸送のメカニズムを解明する.
- ナトリウム結合トランスポーター機能の構造的基礎を調査する.
- 機能的に多様なナトリウム結合トランスポーターの中で保存された構造的特徴を強調する.
主な方法:
- X線結晶グラフィーです.
- 構造分析 構造分析とは
- 比較構造生物学 比較構造生物学とは
主要な成果:
- 異なるファミリーのいくつかのナトリウム結合トランスポーターの最近の原子解像度の結晶構造が決定されました.
- これらの構造は,機能的な多様性にもかかわらず,驚くべき構造的な保存を示しています.
- この発見は,輸送メカニズムの原子細部に関する前例のない洞察を提供します.
結論:
- 保存された構造構造は,様々なナトリウム結合トランスポーターの機能を支えている.
- 原子解像度構造は,ナトリウム結合輸送のメカニズムを解読する鍵です.
- この構造的知識は,これらのトランスポーターを標的とした治療法の開発を進めます.
関連する概念動画
01:29Primary Active Transport
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would not...
01:47Primary Active Transport
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they...
01:44The Significance of Membrane Transport
The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
01:44The Significance of Membrane Transport
The transport of solutes across the cell membrane is essential for metabolic processes, like maintaining cell size and volume, generating the action potential, exchanging nutrients and gases, etc. Membrane transport can be either passive or active. It can be simple diffusion, facilitated, or mediated transport aided by transport proteins such as transporters and channels.
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
Transporters facilitate either an active or passive movement of solutes. They can allow a single-molecule transport down its...
01:26Voltage-gated Ion Channels
Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several types of...
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several types of...
01:26Voltage-gated Ion Channels
Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several types of...
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several types of...