| Autor: |
Bos JE; Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands., Siegler MA; Department of Chemistry, Johns Hopkins University, 3400 N. Charles St., Baltimore, Maryland 21218, United States., Wezenberg SJ; Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands. |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of the American Chemical Society [J Am Chem Soc] 2024 Nov 13; Vol. 146 (45), pp. 31085-31093. Date of Electronic Publication: 2024 Nov 01. |
| DOI: |
10.1021/jacs.4c10952 |
| Abstrakt: |
Artificial transmembrane transport systems are receiving a great deal of attention for their potential therapeutic application. A major challenge is to switch their activity in response to environmental stimuli, which has been achieved mostly by modulating the binding affinity. We demonstrate here that the activity of a synthetic anion transporter can be controlled through changes in the membrane mobility and incorporation. The transporters─equipped with azobenzene photoswitches─poorly incorporate into the bilayer membrane as their thermally stable ( E , E , E )-isomers, but incorporation is triggered by UV irradiation to give the ( Z )-containing isomers. The latter isomers, however, are found to have a lower mobility and are therefore the least active transporters. This opposite effect of E - Z isomerization on transport capability offers unique photocontrol as is demonstrated by in situ irradiation studies during the used transport assays. These results help to understand the behavior of artificial transporters in a bilayer and are highly important to future designs, with new modes of biological activity and with the possibility to direct motion, which may be crucial toward achieving active transport. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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