2020年5月
Phosphatidylethanolamine accelerates aggregation of the amyloidogenic N-terminal fragment of apoA-I.
FEBS letters
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- 巻
- 594
- 号
- 9
- 開始ページ
- 1443
- 終了ページ
- 1452
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1002/1873-3468.13737
- 出版者・発行元
- WILEY
Membrane lipid composition is known to influence aggregation and fibril formation of many amyloidogenic proteins. Here, we found that phosphatidylethanolamine (PE) accelerates aggregation of the N-terminal 1-83 fragment of an amyloidogenic G26R variant of apoA-I on lipid membranes. Circular dichroism and isothermal titration calorimetry measurements demonstrated that PE does not affect the α-helical structure and lipid binding property of apoA-I 1-83/G26R. Rather, fluorescence measurements indicated that PE induces more ordered lipid packing at the interfacial and acyl chain regions, providing more hydrophobic environments especially around the highly amyloidogenic regions in apoA-I on the membrane surface. These results suggest that PE promotes aggregation of the amyloidogenic N-terminal fragment of apoA-I on lipid membranes by inducing hydrophobic membrane environments.
- リンク情報
- ID情報
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- DOI : 10.1002/1873-3468.13737
- ISSN : 0014-5793
- eISSN : 1873-3468
- PubMed ID : 31968125
- Web of Science ID : WOS:000510801500001