2006年7月21日
Lysenin forms a voltage-dependent channel in artificial lipid bilayer membranes.
Biochemical and biophysical research communications
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- 巻
- 346
- 号
- 1
- 開始ページ
- 288
- 終了ページ
- 92
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
Lysenin, a hemolytic protein derived from the body fluid of earthworm, was incorporated into artificial bilayer membranes. Upon insertion, it formed a voltage-dependent large conductance channel in asolectin bilayers in a sphingomyelin-dependent manner. The channel had low ion-selectivity. Single-channel conductance was calculated as approximately 550 pS in 100 mM KCl. The channel in asolectin bilayers closed when the membrane was held at a positive potential. In contrast, the channel showed no voltage dependency in membranes made of pure phosphatidylcholine and sphingomyelin, suggesting some lipid contents included in the asolectin membranes affected channel gating.
- リンク情報
- ID情報
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- ISSN : 0006-291X
- PubMed ID : 16756950