Molecular Swings as Highly Active Ion Transporters

Ions are transported across membrane mostly via carrier or channel mechanisms. Herein, a unique class of molecular‐machine‐inspired membrane transporters, termed molecular swings is reported that utilize a previously unexplored swing mechanism for promoting ion transport in a highly efficient manner...

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Veröffentlicht in:Angewandte Chemie 2019-06, Vol.131 (24), p.8118-8122
Hauptverfasser: Ren, Changliang, Chen, Feng, Ye, Ruijuan, Ong, Yong Siang, Lu, Hongfang, Lee, Su Seong, Ying, Jackie Y., Zeng, Huaqiang
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container_end_page 8122
container_issue 24
container_start_page 8118
container_title Angewandte Chemie
container_volume 131
creator Ren, Changliang
Chen, Feng
Ye, Ruijuan
Ong, Yong Siang
Lu, Hongfang
Lee, Su Seong
Ying, Jackie Y.
Zeng, Huaqiang
description Ions are transported across membrane mostly via carrier or channel mechanisms. Herein, a unique class of molecular‐machine‐inspired membrane transporters, termed molecular swings is reported that utilize a previously unexplored swing mechanism for promoting ion transport in a highly efficient manner. In particular, the molecular swing, which carries a 15‐crown‐5 unit as the ion‐binding and transporting unit, exhibits extremely high ion‐transport activities with EC50 values of 46 nm (a channel:lipid molar ratio of 1:4800 or 0.021 mol % relative to lipid) and 110 nm for K+ and Na+ ions, respectively. Remarkably, such ion transport activities remain high in a cholesterol‐rich environment, with EC50 values of 130 (0.045 mol % relative to lipid/cholesterol) and 326 nm for K+ and Na+ ions, respectively. Ein molekulares Pendel „schwingt” Ionen effizient durch eine Lipidmembran mit EC50‐Werten von 46 nm (0.021 Mol‐% bezogen auf Lipid) und 110 nm für K+‐ bzw. Na+‐Ionen. K+‐Ionen werden 27 % schneller transportiert als durch Gramicidin A. Diese Strategie könnte zu verschiedenene Arten von Ionenkanälen mit potenziellen medizinischen Anwendungen führen.
doi_str_mv 10.1002/ange.201901833
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Herein, a unique class of molecular‐machine‐inspired membrane transporters, termed molecular swings is reported that utilize a previously unexplored swing mechanism for promoting ion transport in a highly efficient manner. In particular, the molecular swing, which carries a 15‐crown‐5 unit as the ion‐binding and transporting unit, exhibits extremely high ion‐transport activities with EC50 values of 46 nm (a channel:lipid molar ratio of 1:4800 or 0.021 mol % relative to lipid) and 110 nm for K+ and Na+ ions, respectively. Remarkably, such ion transport activities remain high in a cholesterol‐rich environment, with EC50 values of 130 (0.045 mol % relative to lipid/cholesterol) and 326 nm for K+ and Na+ ions, respectively. Ein molekulares Pendel „schwingt” Ionen effizient durch eine Lipidmembran mit EC50‐Werten von 46 nm (0.021 Mol‐% bezogen auf Lipid) und 110 nm für K+‐ bzw. Na+‐Ionen. K+‐Ionen werden 27 % schneller transportiert als durch Gramicidin A. 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subjects Chemistry
Cholesterol
Ion transport
Ions
Lipids
Molekulare Maschinen
Molekulares Pendel
Sodium
Supramolekulare Chemie
Synthetische Ionenkanäle
title Molecular Swings as Highly Active Ion Transporters
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